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Will do I will check double check and check again. I will let this charge for about an hour then check the voltage what would you expect if it working ? I can do this for a couple of hours today supervised then I have to go to work I will disconnect it let you know how it goes with the...

I have the first cell group on charge

Ok I understand be very careful will do . I will just try the first one and see how it goes .

sorry just saw this one

Ok and just to try across One cell pack which wire from the charger positive should I put to where same with the negative .. stick them onto the battery terminals with insulation tape I think will hold them temporarily.?

I have these Two one is 5V 2amp One is 6v 800mA 4.8VA

Yes thanks assuming all the green wires are the multi coloured ones . which are + positive on this diagram ? but on my battery the central grey wire on the right side is a negative ? My battery has no fuses I would think it’s a good plan to add some while it’s apart ? If it’s saveable And...

Thank you Mathew. This is very helpful and informative. It off a Carrera Vulcan ex display so I would guess it’s been left on the bike and never charged. I would like to have a try at method One (One way is to charge each cell group individually, using an old 0.5A 5V phone charger. Bring...

Morning Mathew. please see attached photos. I am calling the charger port end the front of the battery . looking on from this end so left side which had the red wire connected too. from back to front we have a black terminal with two wires red. And a sealed black wire next to it. 1. white...

Hi Mathew. The charger port only has Two wires red and black . the discharge port has red and black the small wires connected to the PCB / BMS.. they do not go to the charging port . The rest of your post I will get on this and work my way through it and let you know how I get on . Cheers...

ok there is 0 voltage at the charge input socket and 0 Voltage across the the PCB terminal s. There is voltage across the Five Cell clusters ie 10 small colour wires at the side of the inner battery body but still have to get my head around this as to Neaths post Do you know of any battery...

The wires out of charge socket to PCB terminals look great and they are very secure no movement I think it’s new never used.

Ok the voltage across the charge port connected to the bike or of the bike is 0. should I connect the terminal on PCB to the charger and test voltage across charge port again to see if it fused as the voltage will go back to it ?

sorry just saw this message

Morning I put the battery back onto the bike so it’s connected to the controller. I left the top cover off. The voltage across the plus and negative terminals is 0

But before I do how would one test the on and off switch one red wire and 11 white wires on a small lcd PCB . iI have a gut feeling this may be the problem .

Ok I will put it back on the bike and start again

Surprising that a £500.00 battery has the cheaper cells no brand or not really . one of the bikes I bought for parts that has come from Halfords they have gone into it and replaced every single electronic componen with a failed one . I find this a really dishonest thing to do if they are going...

And should I disconnect the charger to do this ?

Thanks Nealh working from back to front on the small colour terminals are they the opposite side of each series of cells