maintain two batteries at once
I have a boat with a two 12 volt battery bank so I can select either one or both. They are in parallel. One is an engine run type battery for starting, etc. The other is a house battery deep cycle for when we are at anchor at night, etc. Can I hook up the single Maintainer to both batteries at once when we are gone to maintain them?
asked 2 years, 6 months ago
- carrboro, NC
on Schumacher XM1-5 Maintainer, 1.5-Amp
Not recommended, as long as the circuit is parallel should work though.
Yes it can as long as they are wired in parallel. I personally like to shut off the batteries and use two maintainers just in case one battery shorts or goes bad.
answered 1 year, 7 months ago
From Schumacher FAQ's. "To charge both batteries at the same time you need to make sure they are wired in parallel. The two batteries should be connected to each other positive to positive and negative to negative. Then attach the charger positive to the positive on one battery and the negative to the negative of the OTHER battery. Do not hook both leads up to one battery." Make sure the batteries are charged and not completely dead before you use a maintainer. Also, I would recommend the 2 amp maintainer for two batteries.
answered 1 year, 9 months ago
I've used mine to keep 4 - deep cycle batteries for a camper topped off. Batteries are daisy chained together. I had to make my own cord to do this.
answered 2 years, 2 months ago
Absolutely. I used it to maintain three 1300aH batteries used to start my semi. The first time I hooked it up to charge the red "Connected" light began to flash after being left overnight. There is no mention what this means in the manual so I unplugged the unit then plugged it back in. It began to charge normally again. The next day I checked on it and it was now in "Maintain" mode. I believe that the 3 batteries collectively took longer to charge than the charger is designed for and it "timed out". Once it was plugged back in it didn't take as long to charge so it went in to "Maintain" mode and worked as it should.
answered 2 years, 3 months ago
- Wellington, OH