Mattyo

Thanks for the replys I found a uk supplier so will order the 40amp one just in case I had pushed it doing a couple of big hills on max chasing a roady

Thanks for the replies I will try and answer all the questions The battery will not charge and there is no voltage on the output wires from the bms The charger is fine and has 53v on the output. I have checked the voltage at the balancing wires 7.5v each pair and a total of 47v on the main wires to the bms. If you zoom in there is a burnt out resistor R26 and it has a electrical burnt smell. The 2 small plugs with 2 wires go to the main on/off switch and this tests out ok The plug with the 4 wires go to a usb output charger not to bothered with this and never use it. The 2 wires with the silicon is a temperature sensor.

Hi I have managed to fry the bms I think it’s happened due me plugging in the charger when it was switched off and getting sparks. Hoping someone can help as I’m struggling to find a matching replacement in the uk, all the ones I’m finding have all the balancing wires on one plug. Is a 48v 20amp 13series with the measurements 8x55x125mm The original came from BMSBATTERY 09 dolphin case .