Daly BMS gone crazy..Update Opinions
I was charging my 120ah lifepo4 battery yesterday and came in for lunch and saw it shut down..I figured it hit the 3.65 volt cell limit and shut down,I went out to check it and saw this on the Blueto...
Forum Discussion
Even if you use their specified values, the Peukert exponent is still something like 1.2, which is not very good for an AGM battery.
Now I recall that you wanted a battery to support a high load with minimal voltage drop. For that you want a battery with a Peukert as close to 1.0 as possible. The best option (besides LiFePO4) for this would be a 'dual purpose' AGM, something like an Odyssey PC-2150. This would give you over an hour 65A with Peukert exponent around 1.08.
Now I recall that you wanted a battery to support a high load with minimal voltage drop. For that you want a battery with a Peukert as close to 1.0 as possible. The best option (besides LiFePO4) for this would be a 'dual purpose' AGM, something like an Odyssey PC-2150. This would give you over an hour 65A with Peukert exponent around 1.08.
BFL13 wrote:
I only measured it once and didn't wait very long for the "resting" voltage so it might have gone higher if I waited. The Peukert from that one should not be used. Need way better testing for that. IMO.
I guess I should not use that example.
I was just pleased that it ran the big inverter load for so long with the one battery. Over half an hour straight is worth a lot of 3 minute MW runs over a daytime at the dog school. Trouble was if staying overnight for a couple days, now you need to run the furnace etc too and not enough AH with just one batt.
