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
A better test is to extract energy from the DUT until a hydrometer indicates 50% capacity remaining then render the energy in kWh.
Back when watts (va DC) were more "difficult" to measure someone came up with the bright idea of merely using amperage. That's as erroneous as using merely voltage.
KW delivered, kWh transacted displays energy correctly. This is the oft overlooked advantage of AGM over flooded batteries when powering a high load through an inverter. KW is less important when powering small non reactive loads but I know few RV'ers today who utilize exclusively such undemanding battery power.
Back when watts (va DC) were more "difficult" to measure someone came up with the bright idea of merely using amperage. That's as erroneous as using merely voltage.
KW delivered, kWh transacted displays energy correctly. This is the oft overlooked advantage of AGM over flooded batteries when powering a high load through an inverter. KW is less important when powering small non reactive loads but I know few RV'ers today who utilize exclusively such undemanding battery power.
