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Igor Rz

Ninebot Z-series Official manual for reactivation of the battery

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Just plug it in a power outlet with a timer. Considering 1% a day the problem will only be there when not riding for a few months. if you charge it completely every month it's ok, and the advantage is you won't kill the battery as it won't hold its charge anyway, so it won't be sitting at 100% for months in your garage. 1 month will make the charge drop from 100 to 70% approximately. You could push it even further to do every 6 weeks. So the problem is only there for people that have long winters (as I do) where the wheels aren't used for more than 3 months.

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On 2/12/2019 at 5:19 PM, RockyTop said:

For the sake of the longevity of the batteries I would find an easy way to disconnect the batteries when not in use.  Sure Ninebot should fix the problem but your are stuck with the problem for now. A switch seems simple but switches fail too frequently and are subject to vibration. Maybe move a connector to an easy to get to location or add an access door? 

"Normal" switches won't work, the current during riding is so high that the switch will melt. High current relays can handle much higher currents, but since the connection's mechanical, any vibration on the contactors might break the connection during riding and the wheel loses all power for a split second (which might be enough to reboot the MCU, and down you go), not to mention issues with possible sparking, voltage spikes etc. So no go really.

The way I'd approach this is to use a very low Rds(on) MOSFET, set up so that a separate switch can be used to "close" it when the wheel's not being used. Of course care should be taken to design it so that in case of failure, the power stays on and not off. Still, it'll add yet another point of possible failure, preferably Ninebot should fix their s**t.

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OK, guys. I was gone for four months and when I came back my wheel seemed severely discharged. I tried the hack but it doesn't work. The battery LED's don't flash any color either. The only time I can get any red light out of anything, is that the batteries and charger will both blip red when I first plug it in to the normal charge port, with the XD60's unplugged.

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On 2/2/2019 at 4:05 PM, ir_fuel said:

I just opened my Z10 and connected the charger as explained in the videos.

My charger led did not flash red/green, but turned on immediately red. I also don't see those small leds they talk about in the video. I'll leave it for 10 minutes and then switch sides and see what happens.

 

On 2/2/2019 at 4:19 PM, ir_fuel said:

After 10 minutes the other side was 16V. Still seems very low to me. Since we have dual packs we should have 25V on each side I guess? I'll leave it charging for 20 minutes on each side and see what happens.

 

 

On 2/2/2019 at 6:11 PM, ir_fuel said:

Another update:

Still low packs. Tried connecting everything and going through the charge port. Nothing. Also note that I never saw any leds flickering as in the  above video.

So I restarted the procedure and as soon as I disconnected the XT60 connectors from the battery the small leds turned red, and they flash now when charging separately. So now I am doing the 10 minute wait, will switch to the other and try charging normally.

 

Did you see this?

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 is it possible to wake up tha battery by using ninebot cable but lower voltage.

 - as can be seen the charger is 36V compared to the regular one 58.8

https://ibb.co/Svb0zbH - the lov volt charger.

Can this wake up tha battery without the need for opeinng the wheel?

Apperently my seller caleld teh ninebot factory and they told him that i need to use that lower voltage cable.

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Welcome @Markus!

Please decide were to ask a question - multiple post don't really help 😁

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Sure :) my bad. I apologize for the mistake and the confusion.  Can we leave this one since this one i nicer?

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Just now, Markus said:

Sure :) my bad. I apologize for the mistake and the confusion.  Can we leave this one since this one i nicer?

No need to apologize! Nothing serious happend!

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