Bulk-Absorption Charging Voltage
2 Concord 8D (258 AH each) Freedom 25 Inverter-Charger (130 amp) Trimetric 2025 Gauge I'm dry camping and charging my batteries. They were 30% discharged. My Concords call for 14.2-14.4v absorpti...
Forum Discussion
OP here. After around three hours the charging rate dropped down to float (13.4v) at 5.6a and 88% charge.
Size of Wires: The wiring is three ot.
Condition of Wires: All connections are clean, shiny and tight. I check that regularly;
3 Stage Time: I understand it takes a long time to get these babies fully charged;
Verify with Hand Held: Jrny, thanks for the arithmetic. From reading all the posts it does sound like this charger is doing the job correctly but not putting out enough amps.
Anyhow, we will be home this afternoon and I can do some tests. I will double check connections. Here's what I plan to do. Is it a good approach?
1. Plug in to my 50 amp outlet (should already be 100% charged when we get home though);
2. Set the Trimetric.
3. Equalize the Concords (this charger will put out an equalizing charge with a change in the dip switches although I've never done it).
4. Unplug and put big loads on the batts (microwave) and draw them down 30% or so;
5. Plug back in and take a bunch of measurements with a multimeter and of course, check the Trimetric.
Anyhow, if I need to I can buy a Magnum to replace this one if it's failing. Thanks for comments (keep them coming) and I'll post results.
jor
Size of Wires: The wiring is three ot.
Condition of Wires: All connections are clean, shiny and tight. I check that regularly;
3 Stage Time: I understand it takes a long time to get these babies fully charged;
Verify with Hand Held: Jrny, thanks for the arithmetic. From reading all the posts it does sound like this charger is doing the job correctly but not putting out enough amps.
Anyhow, we will be home this afternoon and I can do some tests. I will double check connections. Here's what I plan to do. Is it a good approach?
1. Plug in to my 50 amp outlet (should already be 100% charged when we get home though);
2. Set the Trimetric.
3. Equalize the Concords (this charger will put out an equalizing charge with a change in the dip switches although I've never done it).
4. Unplug and put big loads on the batts (microwave) and draw them down 30% or so;
5. Plug back in and take a bunch of measurements with a multimeter and of course, check the Trimetric.
Anyhow, if I need to I can buy a Magnum to replace this one if it's failing. Thanks for comments (keep them coming) and I'll post results.
jor
