Help me choose a fuse and shunt
Four 6v golf cart batteries connected together with 2AWG wire, then 4/0 wire used to connect to the inverter posts. Inverter posts also connect to PD9270 converter/charger. According to wiring gui...
Forum Discussion
Only a voltmeter is fine. The idiot light thing is in fact a voltmeter, so it too is fine.
You start with full batteries 12.7 and go camping. Next morning, at a time when the furnace is not on and little else is on, see your "morning voltage." Say it is 12.5
Next morning, same thing only now it is 12.3 Your recharge target is 12.2 but you can go lower if required. So you are dropping 0.2 a day.
You predict it will be 12.1 tomorrow, so that means either recharge today while it is 12.3 or wait till next day when it is 12.1.
You have to stick around while doing your recharge, so if you had a planned outing today, you can do the recharge tomorrow.
Idiot lights--start off green but drop to yellow with a load, then go back to green when that is turned off. After a day or two it drops to yellow under load but stays yellow when load turned off. You are now close to 50% and time to recharge.
If you don't, now it is yellow and drops to red under load but goes back to yellow when that is turned off. Recharge today! Yesterday would have been better, but your batts will live if you don't do that very often. Oops the light is red and stays red. Oops.
That is how I do it even with the Tri. The Tri gives the AH count so you can compare that with your voltage and see if they "match." Sometimes you see they don't match and that tells you something is wrong. Oops, you left the converter on when you went to inverter! Turn off the converter!!!!
You start with full batteries 12.7 and go camping. Next morning, at a time when the furnace is not on and little else is on, see your "morning voltage." Say it is 12.5
Next morning, same thing only now it is 12.3 Your recharge target is 12.2 but you can go lower if required. So you are dropping 0.2 a day.
You predict it will be 12.1 tomorrow, so that means either recharge today while it is 12.3 or wait till next day when it is 12.1.
You have to stick around while doing your recharge, so if you had a planned outing today, you can do the recharge tomorrow.
Idiot lights--start off green but drop to yellow with a load, then go back to green when that is turned off. After a day or two it drops to yellow under load but stays yellow when load turned off. You are now close to 50% and time to recharge.
If you don't, now it is yellow and drops to red under load but goes back to yellow when that is turned off. Recharge today! Yesterday would have been better, but your batts will live if you don't do that very often. Oops the light is red and stays red. Oops.
That is how I do it even with the Tri. The Tri gives the AH count so you can compare that with your voltage and see if they "match." Sometimes you see they don't match and that tells you something is wrong. Oops, you left the converter on when you went to inverter! Turn off the converter!!!!
