Capacity Testing and 20 HR Rating
I'm thinking about doing a capacity test on my four GC2's. They have a 20hr rating of 215Ah. One thing I'm curious about is how the 20hr rating would have been determined. Being 6v, would they h...
Forum Discussion
Naio wrote:
I thought the key in this type of test was to read the voltage while the load was on. That way you don't have to worry about whether your surface charge has really dissipated (I know mine can take hours). Is that wrong?
I have killed an AGM battery or two by taking them down to 10.5 with a 20 amp load. Whether they were already on their way out, I do not know. Do you guys routinely go that low, for testing or cycling?
You take it to 10.5, you wrecked it, if left in that state of charge (none) for very long. Permanent damage past about 11.5V. Best to at all times keep it at 12.1V or above, at all times, and get it charged back up as soon as possible if it does get down to 12.1V.
