For the experts here.

[OxygenJames]

Slightly left field but anyhow. This is in regards to an electric scooter. It's a 24V thing - I swapped out the batteries to lithium couple of years ago because the lead acid ones kept failing - and changed the controller because I wanted to put a motorcycle-type twist throttle on it instead of the on/off thing it had - so I am not completely unskilled in these matters - but the range is pretty rubbish and so I had this brilliant idea (?) - to swap the 2x 12v batteries - for one 36v one. I can just about squeeze a 36v in there - there's just about enough room. I presume I will need to change the controller (again) - but...... will the motor be able to handle it? I'm thinking providing I don't use too much full-throttle then surely it would be OK? Yes? No? Any thoughts from those of you who know what you're talking about? Thanks.

 

[saneagle]

It'll probably be OK if you don't go too slow up hills, but the extra power will help to go up hills faster..

If you just want more range, why don't you just change the battery to another 24v one with more capacity? A 10S3P 36v battery has 30 18650s in it, a 7S4P 24v one has 28 18650s in it. If they had the same cells in them, they'd be approximately the same size and capacity, but the 4P arrangement of the 24v one allows you to use higher capacity cells, so you could use 3300mAh ones instead of 2500mAh. That would give you 28 x 3.3 x 3.7v = 341Wh instead of 30 x 2.5 x 3.7 = 277Wh

 

[OxygenJames]

It'll probably be OK if you don't go too slow up hills, but the extra power will help to go up hills faster..

If you just want more range, why don't you just change the battery to another 24v one with more capacity? A 10S3P 36v battery has 30 18650s in it, a 7S4P 24v one has 28 18650s in it. If they had the same cells in them, they'd be approximately the same size and capacity, but the 4P arrangement of the 24v one allows you to use higher capacity cells, so you could use 3300mAh ones instead of 2500mAh. That would give you 28 x 3.3 x 3.7v = 341Wh instead of 30 x 2.5 x 3.7 = 277Wh

Thanks.