profdant139 wrote:
Mordecai, what do you use to monitor whether you are short amps? (Different from a short circus, I think.). ;)
No, seriously, which device will give you an accurate picture of the remaining battery capacity? Using a cheap multimeter, I often check the voltage on my lead acid batteries, on the theory that any reading below 12.1 means that I've got a state of charge less than 50%.
But with lithium batteries, the voltage does not drop, I think. The battery goes from "full" to "dead," if I remember correctly.
Full charge is about 13.4 volts, at 12 volts you are at about 10% charge with LifeP04. Voltage does drop with state of charge just not as much as lead acid.
