ThomasEekels
10 mW
- Joined
- Aug 18, 2019
- Messages
- 27
Hi all,
our son has an electric scooter that runs on 4 Led-acid gel batteries.
Now he has ruined his 3rd set and it becomes an expensive hobby.
He asked me if I can replace the led-acid by a lI-Ion battery system. I am thinking on that.
There is much room, having 4 spaces for a 12V led battery available. I am thinking of building 4 separate LI-Ion ' tanks' for those spaces and wire them together.
Option A: I could build 4 packs of 3s ?p and put the 4 packs in series,
Option B: I could build 4 packs of 13S. ?p and wire the 4 packs parallel
How about that choice ? Any preference based on efficiency, charging, e.t.c. ?
Than, I need to add balance circuits to the batteries during charge.
Supposing I will charge the whole set together, with a 48V charger,
What balance circuits do I need to build for both configuration options ?
Can it be 4 balancers for 12V. when option A ?
Can it be 4 balancers for 48V. when option B?
Finally, how do I protect the scooter from deep de-charge, (f.i. insert a motor power-shut-off at minimum voltage level?)
Is this a viable project ? If not, the scooter probably will end-up on the scrap yard but it still is a good scooter so tat would be a waste.
Thomas
our son has an electric scooter that runs on 4 Led-acid gel batteries.
Now he has ruined his 3rd set and it becomes an expensive hobby.
He asked me if I can replace the led-acid by a lI-Ion battery system. I am thinking on that.
There is much room, having 4 spaces for a 12V led battery available. I am thinking of building 4 separate LI-Ion ' tanks' for those spaces and wire them together.
Option A: I could build 4 packs of 3s ?p and put the 4 packs in series,
Option B: I could build 4 packs of 13S. ?p and wire the 4 packs parallel
How about that choice ? Any preference based on efficiency, charging, e.t.c. ?
Than, I need to add balance circuits to the batteries during charge.
Supposing I will charge the whole set together, with a 48V charger,
What balance circuits do I need to build for both configuration options ?
Can it be 4 balancers for 12V. when option A ?
Can it be 4 balancers for 48V. when option B?
Finally, how do I protect the scooter from deep de-charge, (f.i. insert a motor power-shut-off at minimum voltage level?)
Is this a viable project ? If not, the scooter probably will end-up on the scrap yard but it still is a good scooter so tat would be a waste.
Thomas