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Nerys · 04-11-2011, 01:15 PM

I thought lithium needed a CONTROLLED charge? I am pretty sure you can't just shove raw power into a lithium pack and expect to survive the encounter :-)

also what about balancing the pack? lithium is 3.7v so that 14.8v is made of 4 cells that need to be balanced.??

So I very much doubt you could "charge" the lithium pack directly off the alternator like you can a lead acid battery.

then you have the problem of how well will a lithium (and charger) handle the pack being charged "AND USED" at the same time? most battery charger arrangements do "NOT" like this at all.

so you might need 2 packs. one to charge one 2 "use" and alternator between them to keep the packs happy.

now if you go sans alternator no problem since you will only use or charge and not both. but now the lithium pack gets a lot more expensive since you will need a much larger one :-)

04-11-2011, 01:15 PM	#122 (permalink)
Nerys Grrr :-) Join Date: May 2008 Location: Levittown PA Posts: 800 Cherokee - '88 Jeep Cherokee 90 day: 19.44 mpg (US) Ryo-Ohki - '94 Geo Metro Xfi 90 day: 50.15 mpg (US) Vger 2 - '00 Plymouth Grand Voyager SE Ninja - '89 Geo Tracker 90 day: 30.27 mpg (US) Thanks: 12 Thanked 31 Times in 25 Posts	I thought lithium needed a CONTROLLED charge? I am pretty sure you can't just shove raw power into a lithium pack and expect to survive the encounter :-) also what about balancing the pack? lithium is 3.7v so that 14.8v is made of 4 cells that need to be balanced.?? So I very much doubt you could "charge" the lithium pack directly off the alternator like you can a lead acid battery. then you have the problem of how well will a lithium (and charger) handle the pack being charged "AND USED" at the same time? most battery charger arrangements do "NOT" like this at all. so you might need 2 packs. one to charge one 2 "use" and alternator between them to keep the packs happy. now if you go sans alternator no problem since you will only use or charge and not both. but now the lithium pack gets a lot more expensive since you will need a much larger one :-)