sculpturetim
1 µW
- Joined
- Feb 25, 2021
- Messages
- 2
I've completed my second ebike now using a combo of kt controller, geared hub motor and Makita tool batteries, each battery has a voltage of 18 volts with 5ah but on full charge can be as much as 21v each, which means if i use 3 packs together to achieve 54 volts i risk blowing the 36-48 volt controller with a potential peak of 63v
I have tried to use buck converters to reduce the voltage but found most of them unreliable on the bike. I have been thinking of the best way to reduce the peak voltage.
Any suggestions for example using some kind of resister to waste a few volts, running a headlight system to make it lower or a reliable 30 amp buck convertor that would reduce from 63v -54v?
I believe they are quite well constructed batteries with bms built in and i own so many that it makes sense for me to try, ideally i would run a 3 battery system perhaps with another 3 in parallel
would give me ideally 54v 10ah
The batteries were purchased at the same time and are charged together
Many thanks for you suggestions
I have tried to use buck converters to reduce the voltage but found most of them unreliable on the bike. I have been thinking of the best way to reduce the peak voltage.
Any suggestions for example using some kind of resister to waste a few volts, running a headlight system to make it lower or a reliable 30 amp buck convertor that would reduce from 63v -54v?
I believe they are quite well constructed batteries with bms built in and i own so many that it makes sense for me to try, ideally i would run a 3 battery system perhaps with another 3 in parallel
would give me ideally 54v 10ah
The batteries were purchased at the same time and are charged together
Many thanks for you suggestions
Last edited: