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The BMS could be working exactly as designed but still not be capable of balancing the cells except over a very long period of time. For example Take a 36v 15AH battery pack with this commonly used bms...

Yes, a small current flowing in a high impedance path from from the positive to negative casing which is physically only circa 1mm away at the positive terminal. In theory the BMS should rebalance the cells but how long this takes depends on the balancing current, whether the BMS throttles...

Water from condensation can cause a battery to becoming unbalanced through a small short circuit. Not enough to do any noticeable damage but enough for the pack to become unbalanced over time. When batteries are properly assembled gloves are used so human sweat which contains salts does not...

Whats involved?

I think its a good idea to do something like that - bolt on plate to attach the bafang motor, hookup to the original battery. Is the company that made the Impulse motors also dead like 50 cycles? Kind of a shame for all the bikes to become toast as being Kalkhoff I imagine they are good...

Yes it is. Still lots of them around as its a popular bike on the continent. https://www.ridewill.it/p/en/connex-3050502600-sprocket-1-2-x-3-32-11-teeth-increasingly-for-panasonic-e-bike-engine/121582/

Ha ha, bet that flies up the hills. If you want yet more speed and power I recommend the 11 tooth mod, nice a simple to do, you might need extra chain links.

Check out fleccs page, you can add a little more torque by change the drive sprocket to an 11 tooth, you can also add more speed by changing the sprocket on the rear wheel. The controller is inside the housing and is potted, you can add sodder to the busbar to boost the amps and thus torque...

Sold. Not sure how to mark the original post or delete the post.

Price drop to £80 plus postage

Price drop to £95 plus postage.

Reasonably cheap battery here if you wanted to take the risk https://www.allbatteries.co.uk/electric-bike-battery-panasonic-type-36v-14-5ah-468wh-li-ion-aml9124.html

The downside of C is that the Panasonic drive system works with a torque sensor which a cheap controller won't be able to use. In addition you might have trouble finding the phase wires inside the motor housing,as Flecc says the controller has shielding or potting in the 26 volt version which...

Price drop to £105 plus postage.

Hi Graham, yes still available.

Thanks for the heads up. I'll send with either Collectplus or Yodel. I won't lie when filling out the forms. The batteries are built to European standards and I'm not aware of any catching fire over the last 10 years so I don't think I have any extra responsibility over and above what...

Nealh, I should have said this is a UK only sale. I don't see it being a problem as long as its being sent overland within the UK. I was going to send with Collectplus . There's a lot of ebike batteries being sold on ebay so some carriers must be willing to take them. I've heard of...

That's the original Powabyke. I'm not sure they had a specifc model number. I'd just describe it by its features. Rear hub motor. 36 volt lead acid battery.

I recently bought a Kalkhoff proconnect S which came with 5 batteries which is too much. So I have 3 available for sale. These are the lighter 10AH batteries. They are at least 6 years old but still work ok. The lights based capacity meter is 4 out of 5 for two, so they've lost 20% of their...

I tried to post to this but I received a message saying 'please select a valid package' which I didn't understand.