IPS ZERO Review

[micro]

This review was updated by the following addendum on December 24 (Happy Christmas to all of you!). I did not change the first version (see below).

Available information:
Website: http://www.iamips.com
User's manual is attached.

Mechanical design:
The footrests are prone to scratches. However, with a can of glossy white paint it is easily touched up.
The semitransparent covers with the LED ribbons are fixed to the white body shells by means of fragile lids. It is not easy to remove the covers without breaking them. I have the bad attitude as to open my stuff too often. Consequently, four of these lids are broken.

Charger:
My charger limits the voltage to 66.0V, that is 4.1V/cell. It charges with a more or less constant current. Charge current is 2.0 A when the battery is below 64V, the current drops with rising voltage, e.g. 1.4A at 65.5V and only 0.5A at 65.5V.
It is seems to be short-circuit protected.  

Connectors:
The charger uses a coaxial DC power connector  0.100"/1.42" (2.5/5.5mm) female connector. The counterpart is hidden behind one of the footrests.
Battery pack is connected via an XT60 connector, the balancer cables are divided into two JST SM connectors, 11 and 7 poles respectively.

Lighting:
Is Chinese bling-bling. It consists of four RGB dumb ribbons (you can have only one color at a time on the ribbon). They are connected by means of four six pole JST SM connectors. The ribbons are powered by a separate 5V power supply. If you do not like the fancy lighting, remove them and use the power supply for your own purposes. I myself took it for four bright red 70mA LEDs (2 x 2 in series with a resistor) and a Voltmeter.

Battery:
The ZERO-130/260 incorporates 18650 cells marked NRH10. The battery manufacturer rates the NRH10 cell not as of 2.2 (as imagined here sometimes), but of 2.0Ah capacity.
http://www.saftylipobattery.com/sell-2770756-18650nrh10-16s1p-60v-2000mah-lipo-battery-for-e-scooter.html
As reported here, in the ZERO-340 32 Sony US18650NC1 cells are installed.

I tested one of the ZERO-130/260 NRH10cells with a constant discharge current of 2.1A, the voltage dropped after 29min to 3.5V (I regard this is the limit for our EUC, that is 56V/2A for our 16 cells). That is almost exactly 1Ah.

Compare this to the two batteries in this graph:
http://www.dampfakkus.de/akkuvergleich.php?akku1=141&akku2=491&akku3=&akku4=&akku5=&akku6=&a=2
The one is the Sony US18650NC1 cell which is used in the ZERO-340, the other is NCR18650B from Panasonic which I installed in my own ZERO (it is now a ZERO-410 or so).

Constant current flow between full battery and 57V at 2A: After 2 x 1200 s (the time axis is divided in 2s-intervals) the Sony cell voltage drops to 3.55V. This corresponds to some 1.3Ah (2.6Ah for the 32 cell battery) which is the utilizable capacity (see table under the graph). The utilizable capacity (between full and 3.5V at 2A) is 1.5 Ah (Panasonic), 1.3Ah (Sony) and 1.0Ah (the unbranded 18650NRH10 cell in ZERO-130/260) respectively. The table also shows the utilizable amount of energy between full and 3.5V. The 32 cell Panasonic battery gives you some 32 x 5.7Wh = 180Wh (2A discharge cell current). When there are only 16 cells, the current is not only two times higher, the shutdown comes due to voltage dips earlier when the current is not absolutely constant. The 5A table could then serve for an estimation, it says 16 x 3.2Wh = 50Wh. A weaker battery than this Panasonic cell provides an even lower capacity.
My 7Ah Panasonic battery is empty after some 50 to 100 min depending on speed, acceleration and ambient temperature. 50 minutes would correspond to the 1500 tick of the time scale in the above mentioned graph. This battery is good for 16 ... 18km (at 10 °C) in town, with many stops & accelerations. Calculation and experience correspond to the difference of Paul's reported 4km (ZERO-130) and the range of my modified ZERO.

Internal resistances: 66mOhm (Panasonic), Sony seems to be comparable, NRH10 95mOhm (my own measurement). Obviously the NRH10 is not too bad.

My idea is, use either a 32-cell-battery with a capacity as large as possible (e.g. 2 x 3.5Ah), or, if weight matters, take a battery with a very low resistance (e.g. LG H2). The point is, if the resistance is not low, you will have much less utilizable capacity from the small battery and often lack of power (the "grinding noise" comes more often).

Recently IPS rates the batteries of 120 and 240Wh „capacity“. It is not clear whether they changed the supplier or are more honest now.

Remote Control Application:
It runs on Android from 4.4 on (not on FireOS) and iOS 8.0 or later. Compatible with most Android telephones and tablets; iPhone, iPad, and iPod touch. http://www.iamips.com/m/app.html
Useful items in the settings: Battery voltage and heat sink temperature, both values do not update, one has to leave the settings and return again to the setting in order to see the actual data.

You can connect your device during charging.

In the main screen there is something like battery percentage. That is misleading. I is just the voltage. It would be so easy to estimate the actual capacity...

Firmware update: 4.1.2 is the actual version. The update from 4.1.1 worked.

Some issues:
As soon as the wheel is switched of, even for a very short moment, the connection is lost and has to be reestablished which needs some time. The trip counter is then resetted to zero.

When the app scans the environment, it finds several other items and lists all the different MAC addresses.

One digit too much: 30.25°C or 64.83V is not really meaningful.

Quality:
The factory itself admitted that the first ZEROs like mine were assembled in a hurry.
Nevertheless, the design itself is well done, the body parts (the two shells and LED covers) fit precisely.

Speed and tilts:
As I am a coward, I do never drive faster than 22km/h or so. And even below this speed occasionally a very slight forward tilt occurs. When I first experienced it I was pretty sure to fall on to my old nose. I do not find too much about higher speeds here so I argue that my fellow drivers do not have so much experience so far, either. Please correct me if I am wrong.

When the battery is down to < 58V, the ZERO tilts back and forth to tell me it is the end of the trip. When I am waiting for some minutes and then ride very slowly I can do still another 1.5km (down to 57V).

Impressions:
I learned driving an EUC from this year's August on (Airwheel X3). In October, after I received my ZERO, I felt at first pretty uncomfortable on the ZERO. It is not very stiff, the legs do not touch the wheels' body, consequently there is no guidance and the wheel tilts easily to either side which results in an unsafe feeling. After some 200km I can say that riding the ZERO is in the beginning not very convincing, after a while a safer feeling comes up and today I dare to ride it rather fast.

The difference between low pressure (< 2 bar) and a higher pressure (> 3bar) bar is remarkable. With a low pressure it feels unsafe, but in fact the wheel forgives much more than with 3.5 bar. As it is not so easy to control the pressure I made this experience unintentionally.  

The ZERO is not designed to perform tricky things. Driving backwards or going back and forth waiting for green traffic light is not quite as easy than on stiffer EUCs.

The enclosure gives only little clearance to ground, jumping slowly from curbs or jumping up is not ideal.

The enclosure is very close to the tyre. There is a labyrinth on either opening to prevent splash water coming into the wheel, mud, sand and al other things are safely captured there. The ZERO is made for good conditions, you should not use it for trails in woods.
These are the costs of being beauty.

Due to the circular design the wheel looks bigger than other 14“ wheels. The small visible part of the tyre and its „illusory contour“ of the dark LED covers resembles a 16“ wheel. You can see that if you would see a ZERO and one of the older IPS designs side by side.

Possible modifications:
lighting (I do prefer a torch as head light)
voltmeter (100V type, powered by the 5V LED power supply, the instrument works also during charging)
2 x 3.5Ah batteries
tyre pressure control (the Bluetooth stuff for bikes)

Service:
Shanghai IPS Investment Co.Ltd (http://en.iamips.com/  and http://www.iamips.com ) is the manufacturer. E-mail-addresses: runrui.meng@iamips.com, Runrui is relatively new with IPS, but she is the person at the front, and she does a good job. For more specific technical questions ask sophie@iamips.com (Sophie is a traditional Chinese name :).
Shanghai IPS Investment Co.Ltd
Add: 102, 1/F, Yaojiang Internation Plaza, 308 Wusong Rd, Shanghai, China
Zip Code: 200080
Tel: 86-021-61728335
Mail: service@iamips.com

http://ipselectricunicycle.com/ is a reseller.

Orders are possible directly from the factory or through one of the resellers.
I would recommend to purchase fom IPS, it is probably more expensive, but the service is better, and there are friendly people.

My contact to IPS:
Meanwhile I had some discussions with the IPS people. They read the first version of this review, and there where some reactions:
„Hi, pls note the euc shouldn't be lifted if it is turned on, the fast spinning of the tyre would not be safe to the person. and so far we didn't receive any information mentioning that the tyre is not balanced.
Since you first buy it from Tony in Oct (I guess he ordered from fund raising) and we didn't start to sell it internationally then, all orders from fund raising are manufactured in a rush, that's why what you received is not as good as expected.
All orders shipped from us are now well packaged, the same issues will not exist.“

I addressed the battery shipment issue. They agreed in a shipment of ZEROs without battery in order to install the battery by a distributor or end customer.

IPS is willing to sell the ZERO without batteries.

Unanswered Questions:
(Today I got a letter that I might expect some answers later.)

How is the shutdown issue handled?
(low battery, temperature, current)

BMS battery cut out (over discharge): Voltage and delay
Cut in seems to be at around 58V

The temperature value In the application settings:
Is this the heat sink temperature? What is the maximum?
What happens when the maximum is reached?

The power rating in the spec sheet is 800W. What is that? Rated motor input power, output power, surge power, something else?
I have seen in Tony's list 800W for ZERO 130/260, and 1000W for the 340.
Is there really a difference?

In our forum is some confusion as meanwhile there are 120 and 240Wh in your specifications instead of 130/260Wh.
Is IPS really using another battery? In the beginning, was "Safty" the supplier? Today?

Is there any difference between the firmware versions for the different models?
Is it possible as to program the 32cell version of the firmware in a Zero which has been modified this way?

In the manual there is the firmware version 4.3 mentioned. In my ZERO I do have there was 4.1.1, now updated to 4.1.2. What is correct?

There is no CE mark on the ZERO. It could cause a problem with customs.

 

======================================================================================================================

 

I am trying to bring in this review all relevant information together about the IPS Zero. Many is to be found in this thread: http://forum.electricunicycle.org/topic/748-ips-zero

Available information:

IPS seems to be regarded as one of the more serious manufacturers. On their website http://ipselectricunicycle.com/
there is a tab „electric unicycle“ and another „IPS ZERO“. IPS probably expects that it has a bigger potential than the older products.

A Chinese sales brochure is posted here (it was a fund raising program) : http://forum.electricunicycle.org/topic/748-ips-zero/?page=1
The weight (see 7th image) is not 8.6/9.3 kg as claimed but 9.4/10.3 kg.
You can find an „explosion view“ (8th image) where the different enclosure components are to be seen.

The data sheet shows three models, the first ZERO-130 and -260 had been shipped by mid october, the ZERO-340 seems to be available from now on. I guess the batteries for the latter will be of the 3 Ah capacity (the weight is the same as for the ZERO-260, where else the other two are using the standard 2 Ah - cells. In my opinion the ZERO-260 makes not much sense if the ZERO-340 does not weigh more. In the spec sheet there is a difference in the power (1000W vs. 800W). See screenshot here http://forum.electricunicycle.org/topic/748-ips-zero/?page=2

Csmyers' well documented  teardown: http://imgur.com/a/AVqN9

There is no user's manual so far.

Mechanical design:

The weight of my ZERO-130 is 9.42 kg, not 9.2 as claimed in the spec sheet. You can bring the weight down to less than 9.1kg by leaving off the LED covers. Then there is no more fancy blinking... The Zero is not really light. Airwheel X3 (which is of the widespread old design) weighs with the same battery 9.8 kg.

Footrests are slightly inwards tilted, height with 3.5 bar tyre pressure and 75 kg driver is110mm.
The ground clearance is better than of some others, narrow turns are possible.
The footrests are long, the rubber cover is 185mm. The grip is pretty good.

The axis of the footrest is fixed in the axial position by a little headless screw, it has not to be tightly fixed as the axis has to turn around freely. The footrest holds in the park position by means of two magnets, one in the footrest and the other behind the enclosure. This solution is also found on other brands and works fine, but the screw should be secured by Loctite.

The handle would suit a suitcase better than this fancy appearance. I would have formed it as a part of the enclosure.

The tyre is not balanced, the origin of the imbalance seems to be the Kenda tyre. When the EUC is being lifted, it wobbles before the shutdown.

The tyre comes very close to several parts of the enclosure. If not everything is correctly aligned, a grinding noise comes from the touching tyre. It is not easy to reassemble the enclosure. Pump up the tyre to 4 bar before you try to align all enclosure components.
Take care that the lid of the internal black cover fits the white outer part correctly. This provides some protection against water and dirt.
No doubt that somebody did a remarkable effort on the enclosure design. It is not only pretty but also truly convincing in most details. The LEDs may be seen as an expression of bad taste, however, it is simple to disconnect them so that you can be regarded as semi-serious. The drawback of the design is that it is not so easy to dismantle the wheel in order to fix a problem or to repair the tyre.

Electrical design:

As csmyers showed on several photos, it is a spaghetti monster and an application for hot glue producers. As there are no fixation provisions in the enclosure shells I do not believe IPS will change that.
Control box. Have a look at the attached photo of csmyers (mine looks very similar).
The fixation points of the enclosure do not fit the counterparts of the box. The brave mechanic forced the alignment. Consequently, the covers of these box are open, a slit is visible. This is true for either side. The cover strips are very weak, and there are no fixations in the middle. In no way waterproof. The box with the electronics is of the type water comes in but not out. I regard this as potentially unsafe. Next time I will seal the box on either side.
The aluminum enclosure serves as a heat sink, the FETs are tightly fixed by four screws onto it. The plastic cover where this box is mounted on has a big rectangular opening in the rear side for better cooling. Thus the box is exposed to the wheel to splash water as well as to dirt.
I am not an expert in electronics nor did I examine the circuit very long. What I did see:
The component that was burnt in csmyers' ZERO seems to be a transient voltage suppressor 82 volts from ON Semiconductor. I did not find the data sheet, maybe it is customized item. However, on other types of this manufacturer the marking 82A is to be read as 82 volt, minimum 80.
There is a 30 amps fuse at the input, it is rated 32 volts. The fuse will blow only when there is something wrong on the board (burnt FET or voltage suppressor in this case). This fuse serves only to contain the fire when something bad happens. You should never try to replace it.
The MOSFETs are P75NF75 from ST (75 volts max). I am not sure whether this will not pose a problem. I think IPS inserted the voltage suppressor as the FET max voltage is pretty low. (Normally designers do not use voltage suppressors in power electronics as e.g. inverters.)
The Cypress cy8c4247lqi-bl483 controller is stuck on the back side of the pcb (see photo :).
Power supply for the control circuit is provided by a LM5576 step down converter. (If you would like to have a low voltage source you can take one of these converters with an on-off switch at the input. There are tiny boards available.)
Charger:
The EUC is coming with a charger 67.2V/1.75A which uses a coaxial power connector 5.5/2.5mm.
(others use a three-pole round connector). I have little doubt that this connection is not specified for 70V/2A. The opening for the plug (male) is hidden behind the footrest. It is not covered outside of the enclosure, but the plug together with the buzzer has its own little enclosure mounted with three screws on to the inner enclosure part. This is well done and there is no need for an external cover. On the photo the little box had been removed.

The charger weighs 502 g with cables. I would prefer a built-in charger 1 A or so which should not add more than 200 g to the weight. (But everybody is happy with her ultra thin laptop which comes with a bulky power supply.)

Safety:

How does IPS handle shutdowns? The BAMAS is in the control box, this is not an issue.
IPS is still in the "less dangerous" category here: http://forum.electricunicycle.org/topic/478-brands-with-without-unexpected-shutdowns-new-buyers-look-here/
Why?
Here is often stated that more battery capacity means more safety. I do know the arguments. But is it true?

Quality:

My ZERO arrived in a poor condition. Painting peeled off from the footrest, footrest not aligned, the glossy surface of the semi-transparent LED covers blind, even scratches on them, tyre touched the enclosure, wheel imbalanced, inside lots of glue, poor cabling, control box not tight, packaging provisionally, no manual.

Impressions:

Jason McNeil:  http://forum.electricunicycle.org/topic/748-ips-zero/?page=11
1. Motor feels powerful, but I think they dispensed with a number of poles to reduce motor component weight. The consequence is that while riding, it's not quite as perfectly smooth as existing designs—I doubt most people will notice this
2. Mature/sophisticated App: Speed, battery capacity, power (in A), mood lighting (very similar to Ninebot), headlight (not great), ride mode (hard/soft)
3. Perhaps the biggest oversight is the design of the charging port: at the moment, it's on the side near the pedal, with no cover to protect it from the elements. They say it will be improved...
Remarks:
1. Everybody feels that. For me this is the main disadvantage of the ZERO.
2. That is not the application that we do have right now. The actual application does not provide too many informations or options. The battery voltage is hidden in the preferences. Most of the information is useless or „not yet available“ as the suppression of the blinking.
3. This is not a really an issue. See above and photo.

My own impressions: Vibrations, loud, feels a bit weak in narrow corners, tilt back is not aggressive, leg-friendly (cushions from the accessories are not really useful), fancy appearance without the LED gimmick, technically no step ahead.

Service:

Here are many remarks on the wonderful communication with the person with the pseudo „Tony“ to be found. I got best wishes from some of you for my attempts to get anything useful or at least a friendly word. For instance, in case you have the feeling that something is not as it should be, the answer could be: „we did not agree ! unless you send me the video of unboxing like this one.“
https://www.youtube.com/watch?v=VbiBjobG__0
Whenever you are touching a IPS product you should have a camera at hand.

Shanghai IPS Investment Co.Ltd (http://en.iamips.com/  and http://www.iamips.com ) seems to be the manufacturer

There are two E-mail-addresses, the one does not work, on the other (suka@iamips.com.cn) I got no response so far.

http://ipselectricunicycle.com/ is a reseller. This would explain our "Tony"-adventures. „Tony Lee“: manager@ipselectricunicycle.com

http://www.ipsunicycle.com/ And what is this?

I have sent a copy of this to IPS, I invited them to comment on possibly wrong statements.

Please contribute to this review, I would like to get it better and more complete.

User manual for Zero.pdf

Edited December 24, 2015 by micro
update

[SlowMo]

You can see the reply sent to me by Shanghai IPS Investments Co. Ltd. here.

It clearly explains that the first batch of Zero's were sold to obtain test results from customers (for around $500.00+shipping which is not cheap). I would still consider buying it once all the problems have been resolved.

[Trailseeker]

Unboxing:

Only 95 $

Box in the box:

The ordered additional parts were packed into the box. The plug adapter was placed free of charge :-)

The original content:

Accessories:

 

 

[Pagsy]

ok here is my review :

 

I own multiple ninebot one E+ N10 and N20 (I prefer the N20 by the way).

I recently finally receive the IPS Zero 340wh.

Here is my review after riding more than 100Km. (Max speed 30kph unlocked)

I'm not a very technical guy, so my review will be more oriented from the perspective of the user lambda.

 

1- The packaging (4/5)

The packaging is good. The box is beautiful and attractive.

It comes with 

- protections for knee and hands with IPS logo.

- pads for the unit with IPS logo (ugly one actually)

- european plug for the power !!

- valve extension for the tire

 

The unit is beautiful (very nice finitions) and fully charged.

The handle is solid and feels reliable and the unit is light. I didn't measure on a scale but it is the same as the arwheel x3 if you need a comparison.

 

I like that the valve of the tire is easily accessible !

 

The power button feels sharp and functional. The charger port is not placed nicely, i didn't cover it yet but I already rode under the rain, dust and mud, and i didn't have any problems yet. It is still clean !

 

2- Riding

I quickly pumped the tire first, but I could have kept it like this.

I just prefer when there is more pressure.

 

Then I ran into some problems connecting the app to the wheel or the wheel to the app.

I dowmloaded all the XIMA or IPS apps from the appstore, I have an iOS phone.

Anyway after many attemps with the iamips app, I finally got it connected to the wheel.

 

The app is ok, but there are rooms for improvment. You constantly need to re-connect the wheel to the app each time you turn it off !

 

this euc is very nice to ride with. the 14 inch size makes it very flexible to make tricks.

The unit is responsive and powerful. The pedals are very comfortable and limit the vibration sensation but you still feel them.

the red brake light kicks off when you stop.

Accelerations are totally descent.

 

 

3- Options with the app (2/5)

The app is a normal one with the basic information

- speed (looks more accurate than the ninedroid after comparison)

- battery level, (Accurate in a real time mode)

- % of power use in real time. (no temperature of the engine)

 

on top of that, you can select the 

- max speed limit (12, 20, 25, 30 kph)

- riding mode (sport, comfort), 

- lightning, you can not totally turn the lights off though but

I like the mode atmosphere mode and when you hit the Lamp button then  you have the red braking light in the back and the white one in the front.

This is convenient when you are many people riding at night.

 

4- Riding (3/5)

2 different mode :

comfort

sport

 

I first had to get used to the 14inches wheel again, but the wheel is nice to ride. 

 

I have to admit, I don't feel a big difference between the 2 riding modes.

I wish there would be more riding mode as I still could feel that the 9B1  on mode 0,1,2 or 3 feels more sharply responsive.

 

I strongly think that the IPS Zero could be more responsive if the firmware would allow it though.

It gave me the impression that I was not using all the available power. 

but I think that if they wanted to maintain that weight, they had to sacrifice some performances i guess.

 

It is important to NOT overlean with this euc as if the battery is low, it won't be able to catch you up.

I happened to me when accelerating and i had to dismount and run off.

 

Note that when going uphill, I would say that the Zero will go up slower than the 9B1 as it is definitely better and more powerful, but the Zero will go though.

 

I also get more "Wouaaah !!" from people than the 9B1 !

 

Quick conclusion

My feeling is that the IPSZero is a very good wheel in general. A serious competition for 14inches eucs less than 800$ in general.

this wheel is beautiful, efficient, powerful and gets people's attention. 

The design is simple and can easily attract men and women eyes.

 

It feels comfortable riding, flexible, and it is reliable.

 

For me the max speed is a nice to have as it is scary and dangerous to really go that fast.

I just want to be able to cruise around 22-23 kph without any tilt back.

 

I really love that it is not heavy and it is nice to carry it.

 

So I'm happy with my purchase. 

I would recomend this euc for anybody who 

- doesn't look for high power

- is looking for a good looking euc

I will continue riding it and update the post if my opinion changes.

P.

[SlowMo]

The Zero is compact, sleek, light and beautiful. It has the power that very few EUC's can match given the same weight class of 10.7 kgs. It gives a very comfortable ride and is very responsive due to it's powerful motor.  I agree, it attracts a lot more attention that the Ninebot One.

Edited November 23, 2015 by SlowMo

[micro]

Thank you for this good review, Pagsy.

[Viktiga]

14 hours ago, SlowMo said:

The Zero is compact, sleek, light and beautiful. It has the power that very few EUC's can match given the same weight class of 10.7 kgs. It gives a very comfortable ride and is very responsive due to it's powerful motor.  I agree, it attracts a lot more attention that the Ninebot One.

Can you recreate the grinding noise that Paul had with his? As yours is 340.

Edited November 23, 2015 by Viktiga

[SlowMo]

39 minutes ago, Viktiga said:

Can you recreate the grinding noise that Paul had with his? As yours is 340.

I have never experienced the grinding noise yet. I might never will since I don't push my EUC to the limit. Machines need TLC too. 

Edited November 23, 2015 by SlowMo

[Viktiga]

1 hour ago, SlowMo said:

I have never experienced the grinding noise yet. I might never will since I don't push my EUC to the limit. Machines need TLC too. 

But would you say it can keep up with your ninebot? 

[SlowMo]

9 hours ago, Viktiga said:

But would you say it can keep up with your ninebot? 

Of course, Ninebot has max speed of 22km/h. The Zero can have an average speed of 25km/h and max at 28-29km/h. So at 22km/h, the Zeros engine is running at normal operation. Also, I find it a lot more comfortable to ride the Zero than the Ninebot and the compact size plus the weight difference of around 4 kg. is an absolute advantage. 

The Zero can be compared to the Ninebot One P in terms of speed. You can buy 2 Zero's for the price of a Ninebot One P. Think about it.

Edited November 24, 2015 by SlowMo

[Viktiga]

53 minutes ago, SlowMo said:

Of course, Ninebot has max speed of 22km/h. The Zero can have an average speed of 25km/h and max at 28-29km/h. So at 22km/h, the Zeros engine is running at normal operation. Also, I find it a lot more comfortable to ride the Zero than the Ninebot and the compact size plus the weight difference of around 4 kg. is an absolute advantage. 

The Zero can be compared to the Ninebot One P in terms of speed. You can buy 2 Zero's for the price of a Ninebot One P. Think about it.

I was thinking about what Pagsy said and I just thought it sounded strange that the 9B1 would be stronger as the motor in the Zero is 800w while 9B1 is 500w(?). Maybe I'm thinking or/and reading it wrong?

On 2015-11-23 02:13:58, Pagsy said:

 

Note that when going uphill, I would say that the Zero will go up slower than the 9B1 as it is definitely better and more powerful, but the Zero will go though.

 

 

 

[SlowMo]

The Ninebot One has more torque which is good for going up hill but in normal flat pavements, the Zero will run faster. I think the 800w rating is the peak power output of the Zero so it could also be rated at 500w nominal.

[Viktiga]

1 hour ago, SlowMo said:

The Ninebot One has more torque which is good for going up hill but in normal flat pavements, the Zero will run faster. I think the 800w rating is the peak power output of the Zero so it could also be rated at 500w nominal.

Ok then I understand.

[micro]

ZERO-130 seems to use this battery:
http://www.saftylipobattery.com/sell-2770756-18650nrh10-16s1p-60v-2000mah-lipo-battery-for-e-scooter.html

I guess ZERO-260 has the same cells. Has one of you seen what is being used in the ZERO-340?

[SlowMo]

The 340wh is using a 32 Sony US18650NC1 battery pack.  

[Pagsy]

my app's information page says 340Wh, 32 cells

I don't know 100% if it is sony

[csmyers]

7 hours ago, micro said:

ZERO-130 seems to use this battery:
http://www.saftylipobattery.com/sell-2770756-18650nrh10-16s1p-60v-2000mah-lipo-battery-for-e-scooter.html

I guess ZERO-260 has the same cells. Has one of you seen what is being used in the ZERO-340?

Interesting. In my teardown the 260Wh battery pack looks like this:

http://imgur.com/X9IlOEw

[SlowMo]

11 minutes ago, csmyers said:

Interesting. In my teardown the 260Wh battery pack looks like this:

http://imgur.com/X9IlOEw

Should look the same with the 340wh pack but with 2900mah Sony batteries.

[Supersmi]

Hi Guys, 

I'm about to decide to purchase the zero 340 from Tony ( ipselectricunicycle.com). Could you advise me if that would be a good decision or would you recommend otherwize (I'm based in Belgium)

Thanks in advance!
 

Edited November 29, 2015 by Supersmi

[SlowMo]

56 minutes ago, Supersmi said:

Hi Guys, 

I'm about to decide to purchase the zero 340 from Tony ( ipselectricunicycle.com). Could you advise me if that would be a good decision or would you recommend otherwize (I'm based in Belgium)

Thanks in advance!
 

I suggest you buy from Iamips factory directly.

[Jurgen]

44 minutes ago, SlowMo said:

I suggest you buy from Iamips factory directly.

Yes, Tony is a rather 'special' guy

you could also  try monowiel.be; it's all still rather new to them too I have the impression, but they are friendly people, selling from their garage/webshop.

consider maybe also the 16" IPS models, especially the Lhotz model if you're a new to the game, this type will handle falls probably a lot better than the fancy Zero (stick with 340Kwh battery)

welcome to the brother and sisterhood of the big EUC

Good luck,

Jurgen

 

[Supersmi]

1 hour ago, SlowMo said:

I suggest you buy from Iamips factory directly.

Thanks for the advice SlowMo. Can you give me a url to the "lamips factory"?

@Jurgen, I will surely compare to monowiel.be but just want to be sure to pay the right price as there seems to be some difference depending on where you order.

Thanks!

[Pagsy]

The problem with iamps factory is that they always charge me more than Tony.

I finally bought from Tony.

(But I guess it depends as someone else bought also his 340 from iamips cheaper than me I think )

[SlowMo]

7 hours ago, Supersmi said:

Thanks for the advice SlowMo. Can you give me a url to the "lamips factory"?

@Jurgen, I will surely compare to monowiel.be but just want to be sure to pay the right price as there seems to be some difference depending on where you order.

Thanks!

Try to contact

孟闰瑞 <runrui.meng@iamips.com>. You won't regret buying the Zero. 

[micro]

Here some information on the ZERO-batteries. The manufacturer rates the NRH10 cell (ZERO-130/260) not as of 2.2, but 2.0Ah.
http://www.saftylipobattery.com/sell-2770756-18650nrh10-16s1p-60v-2000mah-lipo-battery-for-e-scooter.html

I tested one of these cells with a constant discharge current of 2.1A, the voltage dropped after 29min to 3.5V (I regard this is the limit for our EUC, that is 56V/2A for our 16 cells). That is almost exactly 1Ah. Compare this to the two batteries in this graph:
http://www.dampfakkus.de/akkuvergleich.php?akku1=141&akku2=491&akku3=&akku4=&akku5=&akku6=&a=2
The one is the Sony US18650NC1 cell which is used in the ZERO-340, the other is NCR18650B from Panasonic which I installed in my ZERO (see photo, it is now a ZERO-410 or so). The utilizable capacity (between full and 3.5V at 2A) is 1.5 Ah (Panasonic), 1.3Ah (Sony) and 1.0Ah (the unbranded 18650NRH10 cell in ZERO-130/260) respectively.
Internal resistances: 66mOhm (Panasonic), Sony seems to be comparable, NRH10 95mOhm (my own measurement). Obviously the NRH10 is not too bad.

My idea is, use either a 32-cell-battery with a capacity as large as possible (e.g. 2 x 3.5Ah), or, if weight matters, use a battery with a very low resistance (LG H2). The point is, if the resistance is not low, you will have much less utilizable capacity from the small battery and often lack of power (the "grinding noise" comes more often).

Edited November 30, 2015 by micro
restistance too low