Naio wrote:
Thank you, both!
And Mex, I honestly appreciate the very detailed instructions :-). Did not realize I should set the voltage when disconnected. It's at 14.72v when disconnected, so I didn't adjust anything, just hooked it back up. It's taking 2 amps still.
With the charger set to 14.7 and if the battery is at 12.4 when connected, the voltage you see will be somewhere between those. So to set the charger's voltage, you have to disconnect the charger to see what its voltage really is, then connect to the battery. (with the 120v not plugged in yet)
The idea to clamp the charger onto the battery first and then plug in the 120 comes from the input hit the charger takes if you clamp on while it is plugged in. Easier on the charger to clamp on first then power it up.
When you are charging and want to set the charger's voltage higher, you can twiddle the dial and see a new voltage, but you don't know what you actually set the charger to. If you dial it down, you get no amps until the battery voltage falls below the new charger's voltage, so it looks for a little while that something is wrong, but it's not.
My deep cycle AGMs have a resting voltage of 13v when full, but I don't know if all AGMs are like that. Also their SOC voltages are higher than Flooded by maybe 0.2 volts, but you don't care about that with a starting battery.
