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Agreed Nealh. If i do go the new battery route, i think i'll take your advice and go for a Lifepo4 of roughly the same Ah rating...at about half the cost, it would be madness not to IMO. Thanks very much for your help, it's very kind of you all. Cheers.

£300 - £350...Ouch.

It's another option to think about soundwave, thanks for the suggestion. It would certainly be the cheapest option, but it's getting the right physical sizes that will fit into the existing battery pack box that will be the problem i reckon...still, something to think about though! Cheers.

I did look for this info myself mate, unfortunately, there is nothing printed on the individual cells at all, that i could see anyway.

Starting to think this is indeed the case Nealh...can't afford a new battery, so will have to either sell the scooter as is (no battery) or take your advice about looking into a Lifepo4 battery pack, since they are coming in around half the usual cost of a Lithium Ion pack. Cheers.

That's exactly the information i was after Nealh, thanks very much for your help...hadn't realised it was a 7S and a 7P configuration, but now you've said it, it makes sense since there are 7S groups and the battery pack total Ah is 15Ah...(7 X 2100 mah (ish) = ~15Ah. Cheers

Hi Soundwave, Thanks for your replies. They definitely are 18650 cells, i have had a fair amount of experience with this type of cell, but in vaping circles rather than battery packs. They look a bit fatter due to the angle of my poor photography i suspect. I did worry the cells, or at least...

Hello all. I've been reading quite a bit about Lithium-ion battery packs and their associated BMS / Balancing PCB circuits. I've recently inherited a mobility scooter (i know it's not an e-bike, but i'm assuming the principles behind the battery packs and the BMS boards are the same), which...