Setting battery bank capacity in Nasa BM-1

[Bob666]

Hi!

I am connecting the battery monitor Nasa BM-1 to the battery bank.

After startup, one is supposed to enter the total available Amp hours of the battery bank. In my case 300 Ah. However, the batteries are a few years old. 275 Ah is probably closer to the truth?

What to do. Enter a lower total capacity Amp hours number, or try to never go below 60% rather than 50% (if batteries were brand new)?

Cheers

[Stu Jackson]

Because you understand the concept of aging batteries, you can do either. Or do nothing and do some math in your head.

Your boat, your choice.