The other day I used a 12 V house battery to run a 120 V AC inverter to power a battery charger to charge a 12 V tractor battery.
I am thinking it would be way simpler (and more efficient) to just hook the two batteries up directly, but I hesitate to do this because I do not know if it will cause some damage to the batteries if they are hooked up while one is charged and the other discharged. The house battery is part of a solar power system and quite expensive, I do not want to take any risks with it. Maybe I am just being overcautious?
I have considered using a constant current supply that will run on 12 V but this may be making things more complicated than they need to be. Can anyone recomend a safe, simple way to charge one battery from the other without converting to 120 V then back to 12 again?
I am thinking it would be way simpler (and more efficient) to just hook the two batteries up directly, but I hesitate to do this because I do not know if it will cause some damage to the batteries if they are hooked up while one is charged and the other discharged. The house battery is part of a solar power system and quite expensive, I do not want to take any risks with it. Maybe I am just being overcautious?
I have considered using a constant current supply that will run on 12 V but this may be making things more complicated than they need to be. Can anyone recomend a safe, simple way to charge one battery from the other without converting to 120 V then back to 12 again?