Lifepo4 battery in 1990 Lance?

BFL13 wrote:

StirCrazy wrote:

BFL13 wrote:
Understand the "density" point. BUT--we are talking about "space" for one battery in the battery compartment. The SiO2 27 is a 27. You can run it down to a low SOC no problems so you can have more AH in the same 27 space, which is what the OP wants.

I don't know the true story about Li charging, but I suspect others will want to comment on using a 6300 converter for that. Should be interesting! :)

and the same ah in LiFeO4 is about 1/3 the size. so for a limited battery space the Li is the better choice. also a lot lighter for the same AH capacity.

Steve

Must be a typo or something there?

A Walmart G27 is 12.65 x 6.9 x 8.94 inches and 49 lbs
A Relion 100AH LFP is 13 x 6.8 x 8.9 and 32 lbs
A Trillium 111AH LFP is 12.07 x 6.57 x 8.63 and 30lbs
A Stark 105AH AGM is 12.9 x 6.8 x 8.7 and 66 lbs
An SiO2 100AH is 12.28 x 6.72 x 8.6 and 60 lbs

Another thing about battery compartments in RVs is their odd shapes and any pipes or whatever in them, so battery orientation could determine how many you can get in. Some you can put end up or not, or just on their sides, but none upside down

Allowance for wiring needed too--stiff wires can't be bent in much--it all depends.

LFP "roll your own" needs a box and keep the cells tight so no vibration, lots of wires and a BMS. I dont know what that takes for volume or shape as to what would fit in the OP's battery compartment--he would have to figure that out.

Also he needs room for the heat pads and whatever wiring they take with LFP.

On that 6300--I would toss that whatever kind of battery. In the MH I kept the 6300 panels and swapped out the charger for a PowerMax modern type. The TC original charger was gone and the prev. owner used a portable charger. I tossed that and use a deck mount PowerMax converter in there.

The OP has a 32 amper for the TC which is ok for a 100AH batt, but if he gets more AH, more amps of a charger would be good. Depends on the battery charging spec. 30% charging rate is max for AGMs and SiO2s, eg.
LFP can take way more.

You have to juggle the charger size in amps with the size of the portable gen you can take along to run the charger. That is my limit in the Class C. Can't carry a 3000w gen, but can carry a 2200, so 75 amps is my limit for a charger. The OP has to figure that all out for his own rig as to what is possible.

ya, its kinda hard to use "standard" battery sizes and 100ah li. they build the box for a standard look. when you look at a bigger cell say I put one togeatyher that was 280 or 300 ah. they will be almost the same size and only 2-5lbs more in weight. give or take as I am just pulling the numbers out of my &^% this morning in a hurry. so when your talking about 280-300 ah thats about 240 available so now your looking at a comparison to four 235ah 6V batteries at around 68-80ish lbs each so going from 240 lbs to about say 50 lbs is a huge difference and about the footprint of one of thoes 6V instead of 4. buying premade Li doesnt offer you the saize savings realy but does cut the weight a lot. and making your own boc and adding a BMS is something that from what I see quite a few people on here are quite capable of.

Steve

Steve