Forum Discussion

Texas_Roadrunn1's avatar
Texas_Roadrunn1
Explorer
Mar 28, 2020

Battery: AGM vs. Flooded Cell

Our 5er, 2016 Continental Coach, currently has 4 6v Interstate “Maximum” Deep Cycle Batteries. I am planning to replace them, and am considering the GC2 Trojan T-105 w T-2 Technology (flooded cell), and the GC2 Trojan T-105 AGM w C-Max Technology
(sealed maintenance free). The obvious differences are ; maintenance free, and the higher cost for the AGM. Has anyone had experience with either or both of these batteries in terms of performance quality on a daily basis, and over time? If yes, is the higher price for the AGM version a good value vs.the (maintenance intensive) flooded cell option?

22 Replies

Show More
  • BFL13's avatar
    BFL13
    Explorer II
    Mar 28, 2020
    Not with those, but note the AGM requirement to get them full every so often (often as possible), which means charging at 14.4ish volts constant ( with no dropping to 13.6v before you get there like some converters will) to 0.5 amps per 100AH of battery. Now you can go to 13.6v.

    So how are you going to observe that? I can see the amps taper down to that with my Trimetric monitor. Point being that going AGM also means getting an ammeter you can monitor.

    You also need a charger that will hold the voltage at the right level until amps are down to spec.
  • Lwiddis's avatar
    Lwiddis
    Explorer II
    Mar 28, 2020
    I’m happy with my wet T125s and the additional AHs they have.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,296 PostsLatest Activity: Aug 08, 2025