plaidcabin
New Member
- Joined
- May 3, 2021
- Messages
- 28
40 cells
8 cells per battery in 24v series
5 batteries in parallel setup for 500AH.
New to solar, and never built a battery before, so bear with me but I think I've almost got this figured out. I plan to test each cell and carefully assemble each battery, using solder for BMS leads if needed, and Hot Glue for wire management - make it look real nice just like I would with a PC build. Polyimide tape to hold them together, and I will build enclosures for them as well. By the fifth one I should be a pro!
I plan to use 5x Daly 100a 8S 24v BMS (one per battery). These seem to be the practical choice for a beginner. This way if one battery is weak it can be easily removed and repaired or replaced, at the cost of shortening the life of any replacement cells once they are balanced into the system. Not really a major concern at this point.
My real concern is this: Will these BMS be damaged if the inverter draws more than 100A from the battery bank? I am using a Giandel 4000w (8000w peak) 24v inverter, it can pull quite a lot of amperage. Will the load be pulled through each bms in this configuration, or is it balanced between them?
edit: It's possible to cause damage when setting up this way, but only if configured incorrectly. I will be using 600A rated bus bars to put the 5 batteries in parallel, and a diagonal connection for the inverter and MPPTs. Following this guide I should be safe!
https://diysolarforum.com/attachments/screen-shot-2021-04-05-at-1-29-59-pm-png.43908/
Thanks for all the help, this website is such an incredible resource!
For those curious, I am planning to run 2 strings of 3 335w mono Canadian Solar panels to 2 Epever Tracer BN 40A MPPT's with this setup for charging. Solar cabin, no grid tie!
8 cells per battery in 24v series
5 batteries in parallel setup for 500AH.
New to solar, and never built a battery before, so bear with me but I think I've almost got this figured out. I plan to test each cell and carefully assemble each battery, using solder for BMS leads if needed, and Hot Glue for wire management - make it look real nice just like I would with a PC build. Polyimide tape to hold them together, and I will build enclosures for them as well. By the fifth one I should be a pro!
I plan to use 5x Daly 100a 8S 24v BMS (one per battery). These seem to be the practical choice for a beginner. This way if one battery is weak it can be easily removed and repaired or replaced, at the cost of shortening the life of any replacement cells once they are balanced into the system. Not really a major concern at this point.
My real concern is this: Will these BMS be damaged if the inverter draws more than 100A from the battery bank? I am using a Giandel 4000w (8000w peak) 24v inverter, it can pull quite a lot of amperage. Will the load be pulled through each bms in this configuration, or is it balanced between them?
edit: It's possible to cause damage when setting up this way, but only if configured incorrectly. I will be using 600A rated bus bars to put the 5 batteries in parallel, and a diagonal connection for the inverter and MPPTs. Following this guide I should be safe!
https://diysolarforum.com/attachments/screen-shot-2021-04-05-at-1-29-59-pm-png.43908/
Thanks for all the help, this website is such an incredible resource!
For those curious, I am planning to run 2 strings of 3 335w mono Canadian Solar panels to 2 Epever Tracer BN 40A MPPT's with this setup for charging. Solar cabin, no grid tie!
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