BFL13 wrote:
I don't understand this. I don't want current limiting, I want to maintain the current higher at some constant DC amps instead of it tapering as battery voltage rises.
Hard to do (NOT a feature of any power supply intended to be a battery charger) because the battery behaves like a variable resistance.
When the battery is low, the resistance is also low and the charger supplies a high current. As the charge goes up so does the resistance and less current flows.....normally.
To maintain a constant high current, the voltage has to also go UP.
BUT that is NOT a good thing to do.
A working voltage higher than 15 volts can be bad for some devices elsewhere in the system.
Forced high currents tend to "boil" (electrolyze) the water faster.
Then what parameter are you going to design the system to "watch" so it knows when the charge is done ??
A really LOT of the theory that is often discussed in battery threads has no practical use for most RV owners. Some can actually be dangerous.
