why i call Li fussy

RLS7201 wrote:
I still don't get it, with Li batteries.
The cost is outrageous.
They don't tolerate the cold. My wet cell deep cycle batteries live behind my front bumper and have worked perfectly down to -15F.
Additional devices must be purchased and added into the charging system. I.E. BMS, DC to DC chargers, etc.
4 100 amp GC batteries cost about $400 and last me 5-6 years. That's less than $100 a year for batteries.
We spend the winter months near Quartzsite on BLM property with 500 watts of solar. generator only runs for microwave and hair dryer.
Yeah, Li batteries charge faster, thus the DC-DC charger to protect the alternator. They weight less but that's not an issue for my coach.
For the additional cost of Li batteries, I wouldn't get any more service.
Flack jacket on

Richard

no need for a flack jacket, price wise your wrong, you have effectivly 100 ah usable power in four 100 amp GC batteries, so that would be 1 Li battery which would be about what 400 in the US? we will say 500 and we will even up it to two of them to double your capacity you can use.. thats 1000.00 and an aproximat life span of 20 years thats 50 bucks a year so half the cost. you dont need a dc to dc, I have never had my truck charging a battery yet , thats what the solar panels are for, I am just looking at one for my camper though as I do a lot of off season camping and dont have a lot of space for batteries. for the temp you are probably right, you could use them down to -13ish to draw power but cant charge till your up around -32 so if you are camping in that then ya your better off with the lead acid batteries, but having said that if you can move the batteries into the heated interior of the rv (which you can with Li as there is no offgasing and can be in any position) then that is all fixed, you can use them at -50.

Steve