profdant139 wrote:
So that is what I am humbly asking for -- is there a really easy to understand site or article that explains or compares lithium batteries to lead/acid batteries for RV use and then guides the shopper through the steps needed to come to a conclusion?
There are several differences The biggest ones are as follows.
First there are multiple types of Lithium batteries the one you want is LiFePO4 (Lithium Iron Phosphate).
Now. These batteries have a slightly higher voltage so you really need a converter/charger set for them Progressive Dynamics makes one and sells it through Battle Born Batteries (BB also sells very good LiFePO4 batteries)
You would have to talk to BB about engine charging on a motor home or tow vehicle charging on a trailer (GM alternators I believe WILL charge LI's don't know about Found On Road Dead (FORD) alternators)
The batteries have a very "Tight" discharge curve.. Where with Lead Acid (LA) batteries they start FULL then go FULl FUll. Full full dowN doWN doWN dOWN DOWN LiFePO5 basically go FULL FULl FULl FULL FULl Dead. (The voltage does not drop much till the very end)
Where as LA battereies need to be 50 or 75% full or more.. Li 5% won't kill 'em so you can use most all the stored energy.
Finally Where as you can charge LA batteries from like -30 or lower to hotter than hadies.. LiFePO4 do not like to be charged below Freezing.. Some have temp sensors and heaters.. Some CLAIM they do but don't.. Some simply do not. Again I beileve BB does have heaters and will heat up first. then charge.
All in all... I plan on changing my house 12 volt system to LI. it will only require new batteries and a slight re-progam on the programmable charger.
