running two chargers

jbeliera wrote:
Here is a technical question. Let's say you want to charge your house batteries on your RV quicker. If you have two 12 volt batteries in your battery bank would you charge that battery bank quicker if you put two 25 amp battery charges on at the same time. Would that be possible to increase charging amps and less charge time or would it fry your batteries

I use a separate 10 amp charger to charge my house batteries all the time without issue on my class A. The motor homes load center has a charger that will also charge the house batteries (2 - 6V deep cycle wet cell) when connected to 120V but it does a lousy job. In your application you need to know the charge voltage of both chargers. They may be substantially different if the chargers were made by different manufacturers. Generally (not always) the charger with the highest charge voltage will do most of the charging because it will tell the other charger to "back off" because it thinks that the batteries are all ready charged more than they are.

In short, just because you use 2 - 25 amp chargers doesn't guarantee you'll be charging at 50 amps initially. In some cases connecting two 25 amp chargers may reduce the charge voltage and initial charge amperage well below 25 amps.


Chum lee