EPEver BN 40a MPPT Battery is 3S5P

[MisterSandals]

Ive been using a 3000w Xantrex Freedom XC Pro.
Biggest draw is microwave and rated input is 1800w.

For a BMS to handle this:

3000W / 10V / .85 efficiency x 1.25 leeway = 441A (unmanageable)

When initially sizing your system, this should have pointed you to a 24V or 48V system. Neither works well with 15 cells.

You "could" size for your microwave and hope other loads didn't overload your BMS.
1800W input? Most are sized at cooking watts which is about 25% (?) less than the actual load.

2000W / 10V / .85 efficiency x 1.25 leeway = 295A (nearly unmanageable)

 

[DerpsyDoodler]

For a BMS to handle this:

3000W / 10V / .85 efficiency x 1.25 leeway = 441A (unmanageable)

When initially sizing your system, this should have pointed you to a 24V or 48V system. Neither works well with 15 cells.

You "could" size for your microwave and hope other loads didn't overload your BMS.
1800W input? Most are sized at cooking watts which is about 25% (?) less than the actual load.

2000W / 10V / .85 efficiency x 1.25 leeway = 295A (nearly unmanageable)

Its doable with a 500a rated contactor, as I stated in my post.