Battery cables info please

xrnik

Just Joined
May 11, 2023
4
2
Hello, I was using a kit named Unlimited. After few problems kit stopped working (controller fault I believe) I am trying to find out if still I can use some parts. Battery fist of all. The battery comes with 3 cables. One yellow for power and 2 other white one. Can somebody explain what are these small cables? In the controllers I found on the net there isn't any plug of that kind. Thank you.
 

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Nealh

Esteemed Pedelecer
Aug 7, 2014
21,018
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West Sx RH
The thin wire connectors connect to a BMS safety device for the battery.
 

saneagle

Esteemed Pedelecer
Oct 10, 2010
7,142
3,298
Telford
The two thick red and black are the positive and negative from the cell-pack, the band of black wires are the sense wires from the individual cells and the other group are temperature sensors. You cannot run that battery without a BMS, which is the thring you've separated from the cell-pack that those connectors fit to. You need to put the pins back in the connector in the correct sequence if you want to use it again, otherwise you need to buy and fit a new BMS.
 

xrnik

Just Joined
May 11, 2023
4
2
Thank you for your answers, the old bms I assume was in touched with controller in one part, so I will have to find another bms. The kit was claimed to be 52V 350Wh. Do you know which Bms should I use? Thank you
 

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saneagle

Esteemed Pedelecer
Oct 10, 2010
7,142
3,298
Telford
That battery doesn't look like it came from a kit. It' an OEM battery. Where did you get it from? What's the problem you're trying to solve?
 

xrnik

Just Joined
May 11, 2023
4
2
That battery doesn't look like it came from a kit. It' an OEM battery. Where did you get it from? What's the problem you're trying to solve?
Hello, what do you mean it doesn't come from a kit? I was using a front hub motor kit and this was the battery. The brand nwas Unlimited and it was coming from a Spanish startup company that didn't go well and closed. (
)
The problem is that the kit stopped working, really I don't know the reason, there is no back up info or support, so I am trying to figure if I can re use some parts, battery and hub. Battery seems healthy. The controller - Bms (there are together) doesn't seems to work. So i will have to find another bms and controller and maybe a pedal pass senor in order to work again. So my question is what kind of Bms and controller should I search for? Thank you for your time.
 
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