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
Doesn't this come from the (slightly silly) concept of 'usable capacity'?
A 32 lb 100Ah LiFePO4 provides 0.32lbs per 'usable' Ah. A 66lb 100Ah AGM provides 50Ah of 'usable capacity' 1.32lbs per Ah or about 1/4 the weight.
All thought that is not really apples-to-apples either as LiFePO4 at 100% DOD should give ~3000 cycles. In order to get 3000 cycle out of an AGM the 'usable capacity' is now 20% which makes it more like 3.3lbs per 'usable' Ah, making LiFePO4 about 1/10th the weight.
To be clear this is all marketing hype, but not really any more or less than AGM, and SiO2 is the worst in this regard.
A 32 lb 100Ah LiFePO4 provides 0.32lbs per 'usable' Ah. A 66lb 100Ah AGM provides 50Ah of 'usable capacity' 1.32lbs per Ah or about 1/4 the weight.
All thought that is not really apples-to-apples either as LiFePO4 at 100% DOD should give ~3000 cycles. In order to get 3000 cycle out of an AGM the 'usable capacity' is now 20% which makes it more like 3.3lbs per 'usable' Ah, making LiFePO4 about 1/10th the weight.
To be clear this is all marketing hype, but not really any more or less than AGM, and SiO2 is the worst in this regard.
