6 v GC batteries versus 12 v lithium deep cycle batteries

In most RVs you cannot safely just replace your batteries with Lithium batteries. You need to determine if your RV charger will properly work with Lithium batteries. You also are likely needing to modify the way the engine alternator charges the house batteries if they are changed to Lithium. These are considerations the OP needs to make.

capacitor wrote:
Does the lithium take a different converter?

Maybe. Post that you have for best suggestions.

If you are willing to roll your own the price difference all but goes away.

capacitor wrote:
Does the lithium take a different converter?

YES

Li are finicky. SiO2 are not.

PM me if you want to know more.

-30-

Does the lithium take a different converter?

theoldwizard1 wrote:
Ignoring price (very hard to ignore), Lithium Iron Phosphate (LiFePO) batteries are far superior to any lead acid battery for 2 reasons :

• You can discharge them down to almost 0% SOC with no damage (more usable energy for the same rating)
• They will last many more charge/discharge cycles.

3,000 to 5,000 discharge cycles vs 300-400 for lead acid batteries, and those lead acid batteries can only be discharged to 50% without shortening usable life greatly, even for deep cycle batteries. Finally the lithium iron phosphate batteries will weigh only 25% to 30% what the lead acid batteries weigh for the same rated total capacity, and half that for usable capacity. (example, a 100 AH lithium battery comes in at around 25 lbs, vs around 75 lbs for a 125 AH lead battery, but the latter will only tolerate about 62 AH useable capacity.)

I wish I could afford them!

Ignoring price (very hard to ignore), Lithium Iron Phosphate (LiFePO) batteries are far superior to any lead acid battery for 2 reasons :

• You can discharge them down to almost 0% SOC with no damage (more usable energy for the same rating)
• They will last many more charge/discharge cycles.