Need advice charging Begode Master V3

[Chris50]

I just bought a Begode Master Pro V3 and any feedback anyone can give will be greatly appreciated. 
 

I’m not at all a technical person, but I watched a YouTube video where a person recommends that you charge the battery to 100% every time and once it reaches 100%, you should continue to charge it for 1 to 3 hours (so the battery can balance, I think he said, whatever that means.)

Ive had by Begode Master Pro V3 charging now for about 8 and a half hours. When I turn the EUC on, the Darkness Bot app on my phone says it has a 100% charge. But then when I unplug the charger, within a few seconds, it drops to 98% charge.

What should I do and are there any tips anyone can give me about this?

 

Edited May 21 by Chris50

[EUC Custom Power-Pads]

If the guy really said that. Just don't check any other videos and tips he may have. 🤣

You CAN charge it this way, but you shouldn't do it every time. 

If you don't need 100% battery for a long trip, then just charge it to 80/90 % and only from time to time charge it to 100%.

It's normal that the battery voltage drop after some time. There is no need to recharge multiple times to reach 100%

Battery percentage is sucks, you should check the Voltage. 

How much voltage has the wheel after charging and how much after the end of charge and disconnecting the charger? 

[Cerbera]

That is normal behaviour for Masters I think. It doesn't matter how long you leave it charging for after green light, you always lose the top volt or so within the first 30 seconds of turning on the wheel. Mine goes to 133.7v (reasonable considering it is heading for 2 years old) after full charge, but that voltage is down to 133.0 by the time I get down the end of the drive ! Thereafter the drop-off lessens as you drop through the rest of the range.

Like mentioned above, don't look at percentages too much, rather than voltage. I believe Masters are at 0% around 96 volts or so, so you are doing fine if you get back from rides with voltage above 110v or so...

The reason that guy may have recommended charging to max every time might be because the Master is famous for getting through charge very quickly if you do sustained high speeds, which is always tempting on that machine  But it means you do get more time at higher speeds with more safety margin by starting with a full tank, and there is some wisdom to that. Granted, it isn't doing much for prolonging pack life, but I appreciate the extra headroom, and am confident I can still get a solid 5 years pack life even if I charge to 100% before every ride.

 

Edited May 22 by Cerbera

[PogArt Ttoo]

I’m reading this topic through, and I have some similar doubt if you won’t mind me please?

What I’m observing is the difference between the EUC World’s app read of the percentage vs the BEGODE EX’s reading I can see on the display?

The app says 98% vs BEGODE’s 93%

Is it something to stress about please?

[RagingGrandpa]

1 hour ago, PogArtTi said:

percentage vs the BEGODE EX’s reading I can see on the display

Photo please?

I think Extreme does not show a numeric value for voltage or SoC on its display... only the battery bars icon for SoC.

[Cerbera]

16 minutes ago, RagingGrandpa said:

Photo please?

I think Extreme does not show a numeric value for voltage or SoC on its display... only the battery bars icon for SoC.

Is it an Extreme or an EX ? The EX doesn't even have a display does it ?! or am I remembering that wrong ?

[PogArt Ttoo]

I have numbers display on it @RagingGrandpa ~ see photo…

It is an EX @Cerbera - the Extreme is different wheel, isn’t it…

The EX has display weirdly placed at the rear 😅 ~ I have no doubt you don’t remember because when you looking forward ~ you just can’t see it, lol 🙈🙊🙉

Edited May 22 by PogArtTi

[Cerbera]

So next question; is that number a percentage or a voltage ? It is a 100v wheel right, so either could apply !

[alcatraz]

Whatever your max voltage/charge level is today, make sure you can reach that same level later. Use the same reading method each time.

When battery packs start to fail they usually do it by stopping charging early. People that haven't paid close attention to the normal level for their particular wheel notice problems rather late. "Why won't my wheel charge past 80%?". Sometimes it leads to fires. 

Although many reported fires are because of crashes and diy solutions. 

[alcatraz]

So, the question "should I leave the wheel on the charger for a few hours each time?" 

... I believe is answered. = No.

Only do it if you haven't reached the normal level for your wheel yet. It's possible that balancing hasn't completed yet and you need the charger for that to continue.

Edited May 23 by alcatraz

[PogArt Ttoo]

7 hours ago, Cerbera said:

So next question; is that number a percentage or a voltage ? It is a 100v wheel right, so either could apply !

That’s a good point! 

It can be related to voltage! 

Therefore it can easily confuse me …

I will search for the answer online @Cerbera 👍

Thanks!

 

U P D A T E;

The display shows VOLTAGE!

Thanks @Cerbera and @RagingGrandpa for your good will to help 👍

I’ve found tutorial where the display voltage was mentioned, also I’ve found the display for purchase, and it’s pointing that it’s voltage display 👍

So I’ve got my confusion sorted 😅

Thank you for your time 😉

Art.

Edited May 23 by PogArtTi

[Seba]

17 hours ago, PogArtTi said:

What I’m observing is the difference between the EUC World’s app read of the percentage vs the BEGODE EX’s reading I can see on the display?

The app says 98% vs BEGODE’s 93%

Display you're mentioning is just a voltmeter, not a battery level indicator. Also, what is very important, it's not showing voltage measured by the mainboard. It's a independent, standalone voltmeter that may show slightly different voltage that the one measured by the mainboard (and then shown by the app). It's because every measurement device has its own error.

[PogArt Ttoo]

16 minutes ago, Seba said:

Display you're mentioning is just a voltmeter, not a battery level indicator. Also, what is very important, it's not showing voltage measured by the mainboard. It's a independent, standalone voltmeter that may show slightly different voltage that the one measured by the mainboard (and then shown by the app). It's because every measurement device has its own error.

Thank you very much @Seba (Sebastian 👍) ~ could you recommend whether just leave it as it is, or should I do anything to improve its functionality, to get more precise reading please?

Art.

[Cerbera]

Just now, PogArtTi said:

could you recommend whether just leave it as it is, or should I do anything to improve its functionality, to get more precise reading please?

Fairly sure the answer to that is 'no, just leave it', but curious; in what way do you think its functionality could be improved, and what advantage would a more precise reading of voltage gain you ?! 

[PogArt Ttoo]

24 minutes ago, Cerbera said:

Fairly sure the answer to that is 'no, just leave it', but curious; in what way do you think its functionality could be improved, and what advantage would a more precise reading of voltage gain you ?! 

I have no idea if more precise reading will make (any) all the efforts worth it…

I’m far away from being detailed technician, I’m just average rider…

👍👍👍

[Cerbera]

43 minutes ago, Cam said:

I think functionality could be improved by allowing the EUC to be powered on during charge (which IMO means not spinning up when on a stand; nor beeping like crazy and shutting off after two hours.)

Feel free to correct me if I have misunderstood it, but isn't EUCWs charging functionality entirely contingent on the premise that the wheel can be on during charge ?!

Although I don't use that aspect of it myself I am able to have my Master on whilst charging, just leaning up against a wall, but in theory there is no reason it shouldn't also work in spin kill mode, where it's not gradually heating up over time, or is that not the case on your wheels ?

[Seba]

4 hours ago, PogArtTi said:

Thank you very much @Seba (Sebastian 👍) ~ could you recommend whether just leave it as it is, or should I do anything to improve its functionality, to get more precise reading please?

Leave it as is. Both on-board voltmeter and mainboard are not very precise, although only the mainboard voltage measurement is what finally matters. This is because battery voltage value is used by firmware in various calculations, including some safety features like dynamic tiltback. Anyway, the only important things is that your charger will be adjusted to output 100.8 V. And this should be verified using precise multimeter, but from my experience, chargers already come from factory properly calibrated.

[Seba]

3 hours ago, Cam said:

I also think finer grained reading like on all other EUC brands allow to better make sure the CV phase went as it should. Finer reading also gives an idea of the chargers stability or cycles. To me more info = better chance to catch something abnormal.

Actually you need to observe current, not the voltage, to make sure that CV phase went as it should. As the acronym says, in CV (constant voltage) phase voltage basically doesn't change.

[PogArt Ttoo]

4 minutes ago, Seba said:

Leave it as is. Both on-board voltmeter and mainboard are not very precise, although only the mainboard voltage measurement is what finally matters. This is because battery voltage value is used by firmware in various calculations, including some safety features like dynamic tiltback. Anyway, the only important things is that your charger will be adjusted to output 100.8 V. And this should be verified using precise multimeter, but from my experience, chargers already come from factory properly calibrated.

Thanks a lot for precise comment @Seba

[Seba]

3 hours ago, Cerbera said:

Feel free to correct me if I have misunderstood it, but isn't EUCWs charging functionality entirely contingent on the premise that the wheel can be on during charge ?!

No. EUCW doesn't need wheel connection to control charging process. You won't get battery voltage reading, but it's not required. The only required connection is connection with smartplug. Of course, having wheel connection during charging will give you battery voltage & current data, which may be very helpful to early detect any unbalance or cell failures.