rrliljedahl
Observer
Does anybody have any experience, recommendations or precautions about charging 12 volt lithium batteries off of a truck alternator?
Dry camping and want to be able to use 12volt /120 volt refrigerator (Danfoss 4.4 amp compressor) and microwave/convection oven (15 amp) liberally.
Current set up is
Duramax LBZ diesel powering a single 250 amp 12 volt alternator (manufacturer estimates it will out out 120 amps at idle).
4 gauge wire from alternator with 250 amp fuse to truck batteries
2 AGM starter batteries in truck
Solenoid between truck batteries and camper activated only when truck is running
2/0 wire pulled to camper
250 amp Anderson plugs with voltage measurement of 14.6 at camper
330 watts of solar on the roof (estimating generation of 100 amp/hours on a sunny day) with programmable MTTP controller.
Present plan 200 - 300 amp 12 volt lithium camper batteries (still estimating daily electrical needs) and a Magnum Energy MS 2000 invertor.
No generator in set up.
Thought was to idle the truck to help recharge the batteries if the solar is not keeping up.
No debate that the lithium batteries are costly.
Specs show lithiums are significantly lighter and can be discharged by 80-90% routinely.
I just read that lithiums can be charged much faster than lead acid or AGMs as lithiums do not need a slower "float"but voltage should be no more than 14. Does anyone know if that is true? If so, how do I insure that I would not destroy a lithium battery with there being 14.6 volts at my camper?
Thanks.
Ron
Dry camping and want to be able to use 12volt /120 volt refrigerator (Danfoss 4.4 amp compressor) and microwave/convection oven (15 amp) liberally.
Current set up is
Duramax LBZ diesel powering a single 250 amp 12 volt alternator (manufacturer estimates it will out out 120 amps at idle).
4 gauge wire from alternator with 250 amp fuse to truck batteries
2 AGM starter batteries in truck
Solenoid between truck batteries and camper activated only when truck is running
2/0 wire pulled to camper
250 amp Anderson plugs with voltage measurement of 14.6 at camper
330 watts of solar on the roof (estimating generation of 100 amp/hours on a sunny day) with programmable MTTP controller.
Present plan 200 - 300 amp 12 volt lithium camper batteries (still estimating daily electrical needs) and a Magnum Energy MS 2000 invertor.
No generator in set up.
Thought was to idle the truck to help recharge the batteries if the solar is not keeping up.
No debate that the lithium batteries are costly.
Specs show lithiums are significantly lighter and can be discharged by 80-90% routinely.
I just read that lithiums can be charged much faster than lead acid or AGMs as lithiums do not need a slower "float"but voltage should be no more than 14. Does anyone know if that is true? If so, how do I insure that I would not destroy a lithium battery with there being 14.6 volts at my camper?
Thanks.
Ron
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