I'll be replacing the "small" Group 27 battery that was delivered with our 2011 ST27BH. It's nowhere near the capacity we need when we camp in Provincial and State Parks of the Northeast.
I've decided to go to 2x 6V batteries in series for an increased capacity per unit volume. I'm looking at units advertised at 562A RC @ 25A. They have their box, and 2 will fit nicely on the tongue.
I've had campers/pop-ups for a long time, and know that charging the batteries correctly helps prolong their lives. The ST27BH charger has a trickle (or float) mode when needed. When I'm back home, I keep the trailer level and plugged in to keep the fridge cold. I'm thinking of adding a DPDT heavy-duty switch to disconnect the batteries from the onboard charger, and connect them to another charger (that I install myself) that supports pulse "desulfating", such as the PulseTech charger. Has anyone done this? Is it worth the trouble of installing the DPDT switch and extra wiring?
Edited by: GoneCamping
2011 F-150 SuperCrew XLT, EcoBoost
2011 Sunset Trail ST27BH