How to build a LiFePo4 battery bank.

pianotuna wrote:
Why post a flawed video?

If you want a 24 volt battery--then build that. Putting two 12 volts in series with LiFePo4 may cause the battery management system to not work well (or so I have been told by those who are supposed to know)

Ok so why is the video flawed? he shows how to build it the capacity testing is a bonus. if you are building a 24V battery you would buy a 8s BMS instead of a 4s, so it is one 8 cell battery, I guess I should have said that so you wouldnt get confused. or you can build two 12V and put them in parallel and the two BMS wont have an issue.

like you camping in -40 degree weather 99% of the people don't build 24v systems as it requires a lot more specialized equipment and the cost adds up fast, but if you want you can. there are even 16s 48V BMS if you got a system that big but there getting a little pricy like everything else you need when you go to a 48V system with any battery type. but, for 99% of the people a 120amp 4s BMS is what you'll want, you could go biger but do you realy need to drain your battery down in a hour.

the Daly unit he used is good (its the newer ones with bluetooth that have been having some issues) but I personaly wouldn't put one that big on a 280AH 12V battery, I would build two and use 120amp 4s BMS, and yes overkill is one of the good ones as was mentioned above but there are others that are just as good if not better.

Steve