Trojan T-1275 Trouble
Newbie here. I have a travel trailer that has a Trojan T-1275 battery that is around three years old. The camper spends most of it's time in a pole barn hooked up to a couple of 100 watt solar pan...
Forum Discussion
MakerMK wrote:
I set the voltage at 38 volts, but because the max current was set at 3 amps the voltage seldom got that high. The meters were swinging all over the place as the controller did it's thing. Kind of hard to say an exact voltage that it was operating at. The solar panels deliver about 44 volts in good sunlight.
I must have missed something. 38 and 44 volts is like "24v" panels so to charge a 12v system you need an MPPT buck converter type controller. You can only use a PWM 12/24 controller (like you said you have) if your battery system is also 24v with those sorts of input voltages.
what is really going on there?
EDIT--are you using 24v panels and only getting half the amps as your usual set-up, until you get an MPPT controller? You can do that if the total Voc does not go over about 50v and fry the controller.
