This the same set up as my last set of batteries. They lasted over 4 years and were charged/discharged every day.
Batteries are sealed due to access.
Vetus 4.17 engine. 100 amp Iskra alternator with a Sterling reg' thingy on. ( Can get 100 amps at start up but have to rev to about 1400revs.)
Current measured with multi-meter and engine ammeter....both read the same.
SG fitted directly to battery posts.
I'll start the engine now and give you the readings.....back in a tick.
Right then. SG reads 12.25v/soc60.
Engine at 1000 revs. After 2 minutes 14.5v@78amps. After 5 minutes, 1000 revs, 14.8/14.9v@63 amps.
Anyway. What ever condition the batteries are in, if they can't take any more power ie: reading 1-3 amps, shouldn't the SG read 100% soc?
Regardless of whether 400 amps or 100 amps available?
Rob....
I think Tony has you confused with me......Bless.