Salvo wrote:
The battery must be full before it goes into float. You'll never get a battery to 100% when only on float.
Phil's a assessment when a battery is full is not correct IMHO.
Lifeline says that their AGMs are fully charged when the charge rate drops to 0.5% of the 20hr rate. That is 500ma for a 100AH battery. After that, float charging is optional because the battery is ready for use.
Any meter that reads zero Amps is close enough.
That is all we have to go on with AGMs.
HTH;
John
P.S. Corrected the % from 0.05% to 0.5%