Lifepo4 battery in 1990 Lance?
Will putting a 100ah Lifepo4 battery in a 1990 Lance with a single battery compartment work right?(picture below of converter/charger)It would basically double my house capacity from my currant Gro...
Forum Discussion
Itinerant1 wrote:
I can charge at 100ah with the 2200w or 2000w Honda generator. I've gone from 30% to 100% in just over 3.5 hours. Now if we add the solar and the generator I've dumped 165ah in to move things along a little quicker.
OK, 70% of 500 is 350AH restored in 3.5 hours so 100 amp charging. AFAIK that means your charger must be PF corrected to run on the 2200 gen, but that might depend on the charging voltage. Can't remember what you charge at.
14.6v at 100 amps for charger output is 1460w and with 85% efficiency typical that means input is 1718w which a 2200 can do (near its max running VA) if PF is near 1. A typical non-PF corrected charger has PF 0.7, so then that 1718w is 2454VA--way above a 2200;s max running VA.
I have an example from a few years ago with the 5er, where I had a Honda 3000, 155 amps worth of chargers (100 of that was PF corrected and FLA bank was at 584AH allowing for the 35F temp at the time.
I used the 2 hour gen time allowed from 9-11am. Amps tapered at 61% after 32 minutes, then tapered down to 65 amps at 1100, when I stopped, restoring 214 AH in the two hours and at 87% SOC (all the way I figure it with the help of my Trimetric)
So you could try to match those for a proper comparison by evening up the charging amps, the charging time, bank size in AH etc.. but I am not sure what it would prove for real life camping.
I was very happy to get 214 restored in just two hours--that was all I needed to keep camping, and I was not bothered by that much gen time.
Also if you have two hours of gen time and no solar and you start low in SOC where the FLAs still take the high amps, then if you have a 100 amp charger, the most you can restore is 200 amps. So almost no advantage for the LFP over the FLA starting at 50%, but starting at 75% and run for two hours--ah ha! LFP does way more AH because no tapering in that high an SOC range.
So main thing, is when the salesman says his thing "charges faster" you want to pin him down to the exact scenario he is using to make that claim.
