Thor Forums

[Beau388]

Originally Posted by Travelin' Texans

Other than price???
For a $1000 a pop they'd better be far superior!!!!!
For that $1000 you could buy 3 pair of FLA batteries, each pair will last approximately 5 years, that's 15 years worth of batteries, you'll need 2 lithium batteries so that's 30 years worth of FLA batteries. Will 2 lithium batteries last 30 years?
IMHO you'd have to boondock full-time to justify that kind of $$$$ on batteries.

LFP batteries can be discharged down 100% and still maintain their usable amp-h for 3,000 to 5,000 cycles. Lead acid batteries are limited to 50% discharge to maintain 400 cycles of use. So two LFP 100 amp-h batteries can supply 200 amps-h of power at a nearly constant 12.8 to 12.6 volts, whereas, four 100 amp-h lead acid batteries can supply 200 amp-h of power with the voltages between 12.8 to 12.0 volts.
That said, there is no more economical RV battery than a CG-2 deep cycle FLA; all things considered. If weight and longevity are important considerations LiFePo Battle Born batteries win.