Forum Discussion

theoldwizard1's avatar
theoldwizard1
Explorer II
May 13, 2016

3 stage charger for true deep cycle battery (Trojan T-1275)

I am expecting to replace the 12V battery in my TT this year and would like to go to a true deep cycle battery like a Trojan T-1275. This battery has a lot of power, but it has some "unique" charging...
time2roll's avatar
time2roll
Nomad
Aug 19, 2016
I believe Dometic says 15.2 or 15.4 max. Equalization should be done with batteries disconnected from loads.

I set my controller voltage cap at 15.0 volts to prevent any such issues.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,262 PostsLatest Activity: Jun 12, 2025