Battery related issues thread

[Karinshi]

What a luck... 3 months waiting for my bike to came with the rear tire punctured, bad battery, no handguard screws, the front inside mirrors for the light rebound came very uptilt so i blind people at night and there is no way to fix it other than a new entire light... and i think thats it, nice.

 

[Theo]

I've contacted Stark, and so far they've recommended a 48-hour extended charge, but they haven't specified how to do it other than that I can't do it because my bike shuts off. So, what they told me isn't useful. I'm exchanging messages with them at the moment, lets see what happens.

I don't know exactly what they've told you, but, from what you have written, if I were in your shoes I would personally do this:
1) see what is the lowest charging power that you can choose: I think 0.1 kw
2) calculate how much energy is recharged in 48 h at the aformentioned charging power: 0.1 kW • 48 h = 4.8 kWh
3) calculate the percentage of the battery which needs to be added to increase by the number calculated at point n°2: 4.8 kWh is 67% of 7.2 kWh
4) since 100% - 67% = 33%, discharge the bike to 33%
5) start charging it at 0.1 kw; if everything works as expected, it will hopefully reach 100% in 48 h

Maybe they want it to charge very slowly because currently the cells in the battery are not balanced enough to be recharged faster.

 

[Karinshi]

I don't know exactly what they've told you, but, from what you have written, if I were in your shoes I would personally do this:
1) see what is the lowest charging power that you can choose: I think 0.1 kw
2) calculate how much energy is recharged in 48 h at the aformentioned charging power: 0.1 kW • 48 h = 4.8 kWh
3) calculate the percentage of the battery which needs to be added to increase by the number calculated at point n°2: 4.8 kWh is 67% of 7.2 kWh
4) since 100% - 67% = 33%, discharge the bike to 33%
5) start charging it at 0.1 kw; if everything works as expected, it will hopefully reach 100% in 48 h

Maybe they want it to charge very slowly because currently the cells in the battery are not balanced enough to be recharged faster.

Yes man, thats what im going to do tomorrow. But i dont know if its going to be possible to do a full charge because when it reaches about 85/90% It shuts down automaticaly even with slow charge on low power, i try 0.8kw and It shuts down, thats the lower i went.
I think the slowest you can go is 0.3kw so i will try that. If It shuts down i will lose a lot of time trying to turn It on again not to mention that i need to stay near the bike to respond faster. I Will watch movies all day near the bike i think jajaja


Thank you very much for your time

 

[Karinshi]

I don't know exactly what they've told you, but, from what you have written, if I were in your shoes I would personally do this:
1) see what is the lowest charging power that you can choose: I think 0.1 kw
2) calculate how much energy is recharged in 48 h at the aformentioned charging power: 0.1 kW • 48 h = 4.8 kWh
3) calculate the percentage of the battery which needs to be added to increase by the number calculated at point n°2: 4.8 kWh is 67% of 7.2 kWh
4) since 100% - 67% = 33%, discharge the bike to 33%
5) start charging it at 0.1 kw; if everything works as expected, it will hopefully reach 100% in 48 h

Maybe they want it to charge very slowly because currently the cells in the battery are not balanced enough to be recharged faster.

What concerns me too is that thr bike doesnt automaticaly turn off when complete charge Its reached, its stay on until you unplug the charger, thats weird, It needs to have some form of limit, a switch on the charger or something

 

[Theo]

What concerns me too is that thr bike doesnt automaticaly turn off when complete charge Its reached, its stay on until you unplug the charger, thats weird, It needs to have some form of limit, a switch on the charger or something

My Gen 1 MX keeps a blue LED light on even when fully charged and it turns off to standby mode, i. e. with flashing red LED, only when I disconnect the charger; when it turns off I can also hear a clicking noise which I suppose is the main contactor closing.
Does your bike turn off when you disconnect the charger?

 

[Karinshi]

My Gen 1 MX keeps a blue LED light on even when fully charged and it turns off to standby mode, i. e. with flashing red LED, only when I disconnect the charger; when it turns off I can also hear a clicking noise which I suppose is the main contactor closing.
Does your bike turn off when you disconnect the charger?

yes if i disconnect the charger it turn off (idle with red blinking every 3 seconds) but if not it stays on forever doing a 0.1KW charging