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
BCI specifications are one area of stated battery performance that OEM cannot cheat on without repercussions. The Battery Council International frowns on it, and the OEM risks confrontation with the Federal Trade Commission.
Ampere Hour testing is cumbersome to say the least. But OEM has to verify products at least on a semi-annual basis.
I would like to see OEM be required to maintain cycle life verification and proofing. Wishful thinking. 5% amp hour load until SG 1.100 @ 20C. Number of cycles until DUT degrades to <80% ampere hours rating. This is the test protocol I used for vendor's product evaluation. But I cheated on some testing. A representative sample of DUT's were presented with X hours of constant voltage recharging then subjected to the 5% discharge protocol. Mediocre batteries not only excessively degraded ampere hour capacity but they exhibited inferior CEF. Almost always the two tests agreed.
Ampere Hour testing is cumbersome to say the least. But OEM has to verify products at least on a semi-annual basis.
I would like to see OEM be required to maintain cycle life verification and proofing. Wishful thinking. 5% amp hour load until SG 1.100 @ 20C. Number of cycles until DUT degrades to <80% ampere hours rating. This is the test protocol I used for vendor's product evaluation. But I cheated on some testing. A representative sample of DUT's were presented with X hours of constant voltage recharging then subjected to the 5% discharge protocol. Mediocre batteries not only excessively degraded ampere hour capacity but they exhibited inferior CEF. Almost always the two tests agreed.
