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<blockquote data-quote="PrairieGhost" data-source="post: 395375" data-attributes="member: 704">I have a 200 amp lithium in my camper.&nbsp; I disconnected the onboard charger and rely on 600 watts of solar.&nbsp; I will be adding another 200 watts this spring.I did purchase a different portable charger that brings my lithium up to 14.4 volts while in winter storage, then found a 14.4 v lithium battery maintainer for winter.I did have two huge heavy AGM batteries brand VMax that rated number one on utube and on online camping information.&nbsp; They were 125 amp and over 100 lb.&nbsp; They run me $300 each and I wasn't impressed.&nbsp; At 50% discharge they dropped below usable power so the combined 250 amp only gives 125 usable amps.&nbsp; The lithium can be discharged to 10% so that gives 180 usable amps.The best thing about lithium with solar is the speed at which the battery will accept power.&nbsp; A lead acid on a 10amp charger starts out accepting full power, but shortly drops off to 75% then less and less.&nbsp; To fully charge may require 10 to 12 hours.&nbsp; On a day with good sun they may only charge 25%.&nbsp; Lithium on the other hand you can pour the power to them and they will accept it.&nbsp; My three 200 watt solar panels will fully charge the 200 amp lithium on a bright day.&nbsp; I am adding 200 watts this spring so I get a full charge on a hazy or partly cloudy day.Edit: my charge controller indicates that my solar pannels are charging my lithium at 28 amps in good sunlight.&nbsp; Another pannel shiukd put my charging amps at about 36 to 38.</blockquote>

[QUOTE="PrairieGhost, post: 395375, member: 704"] I have a 200 amp lithium in my camper. I disconnected the onboard charger and rely on 600 watts of solar. I will be adding another 200 watts this spring. I did purchase a different portable charger that brings my lithium up to 14.4 volts while in winter storage, then found a 14.4 v lithium battery maintainer for winter. I did have two huge heavy AGM batteries brand VMax that rated number one on utube and on online camping information. They were 125 amp and over 100 lb. They run me $300 each and I wasn't impressed. At 50% discharge they dropped below usable power so the combined 250 amp only gives 125 usable amps. The lithium can be discharged to 10% so that gives 180 usable amps. The best thing about lithium with solar is the speed at which the battery will accept power. A lead acid on a 10amp charger starts out accepting full power, but shortly drops off to 75% then less and less. To fully charge may require 10 to 12 hours. On a day with good sun they may only charge 25%. Lithium on the other hand you can pour the power to them and they will accept it. My three 200 watt solar panels will fully charge the 200 amp lithium on a bright day. I am adding 200 watts this spring so I get a full charge on a hazy or partly cloudy day. Edit: my charge controller indicates that my solar pannels are charging my lithium at 28 amps in good sunlight. Another pannel shiukd put my charging amps at about 36 to 38. [/QUOTE]

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