I've been trying to read everything I can on these forums but I'm also starting to go cross eyed so I'm hoping you don't mind me asking some basic questions. I want to build a 48V 100AH system. This is for an electric pontoon boat. Currently the boat uses 4x12V SLA's in series and 440W solar with Victron MPPT and shunt. I've never gotten close to running the SLA down to 50% which is why I want to just stick with 100ah. From everything I've read I feel confident I can put this together. My thought is to use EVE 105AH A cells. Here's my questions:
1) Should I do one 48V (16S) or do four 12V(4S)? The one reason I'm considering the 12V way is because that makes it alot easier for me to get the batteries on and off the boat. But should I do the 48V so I only have one BMS and it keeps all the cells balanced?
2) Speaking of balancing. I was all set on the JK BMS because of the active balancing but then I started reading multiple recent threads about issues people are having with them. And the same sort of thing being said about Daly. Can someone just tell me which BMS to choose? The electric motor pulls 83amps at full power, but other motors pull 96amps. So I was thinking of going with a 150A BMS in case I ever change out the motor in the future.
3) As far as building these I was planning on using screw top battery boxes from Ali and fibatape to hold the cells together with the thin plastic in between them. I've also seen Topbms brackets/intermediate bracket and wanted to know what you thought of those.
Please share your thoughts on the this build and ask any questions.
Thank you,
James
1) Should I do one 48V (16S) or do four 12V(4S)? The one reason I'm considering the 12V way is because that makes it alot easier for me to get the batteries on and off the boat. But should I do the 48V so I only have one BMS and it keeps all the cells balanced?
2) Speaking of balancing. I was all set on the JK BMS because of the active balancing but then I started reading multiple recent threads about issues people are having with them. And the same sort of thing being said about Daly. Can someone just tell me which BMS to choose? The electric motor pulls 83amps at full power, but other motors pull 96amps. So I was thinking of going with a 150A BMS in case I ever change out the motor in the future.
3) As far as building these I was planning on using screw top battery boxes from Ali and fibatape to hold the cells together with the thin plastic in between them. I've also seen Topbms brackets/intermediate bracket and wanted to know what you thought of those.
Please share your thoughts on the this build and ask any questions.
Thank you,
James