12V Lithium Iron (LiFePo4)

I have one I use in my ATV (not Battery Tender can't remember the name). It seems to put up with my abuse of it more than my previous AGM's. By abuse I mean sitting in the yard without being charged up fully.

What I find interesting about the Battery tender lithium's, is that they are packaged as a regular 'carjar' at motorcycle sizes, and smaller and designed to be charged without modification to charging systems. These are obviously for weight savings and not really applicable for rv usage as such tiny capacities.

Apparently they do not have a method to prevent over discharge though.

Thoe jumper packs are likely dependent on the main battery not being fully dead, but many videos exist on U tube of v6 and v8 engines being jumped by the jumper pack alone.

I am not sure we can compare a 200 amp AGM jumperpack to a 200 amp Lithium jumper pack though. Obviously it is not strong enough for Diesel or other large high compression engines, but the existence of such a product is a step in the right direction, and part of me wants in. The other part says a 22$ agm will fulfill my current portable 12v needs.

That LiOn battery (The Battery Tender) model does look interesting but only 10-14 amp hours Id need like 50 of them.

On the small jump pack, 200 CCA is basically useless, you need 750 or more, I do not consider a jump starter useful (Other than for my generator) without at least 800 CCA Used to work for a tow company We tried a 600 amp one once, could not even start a motorcycle with it.. My thousand amp worked fine.

Thanks! I may look into this deeper. I have a pretty good emergency jump start battery pack with two lighter outlets that I sometimes use for astronomy... running my go-to mount, dew heater, etc. I've replaced the battery in it once a few years back (got lucky on both price and amp-hrs). But less weight is more better ;).

I'll have to investigate whether the original wall wart charger will work with this chemistry, as well if there's a battery that fits in the plastic case.

Jim, "Mo' coffee!"

"lasts 5 times as long" with a 3 year warranty? I use lawn mower batteries at 1/4 the cost. can buy a new one every other year cheaper.
bumpy

There are a lot of us who are watching the evolution of lithium batteries very closely.... it's definitely the future, IMHO.

There was a good discussion on the jump packs here - http://www.expeditionportal.com/forum/threads/119464-Lithium-Jump-Packs