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Im looking at batteries and found some locally,
first option is a 60V LG Chem 43ah Li-ion 2.58 Kw/module
second is a 83V A123 based pack w 59ah Lifepo 4.89kw/module (like this one better)
Just for clarity...
These are both lithium-ion (Li-ion) batteries. The LG Chem probably has lithium nickel manganese cobalt oxide (or "NMC") electrodes, while the A123 has the lithium iron phosphate (LiFePO4 or "LFP") that A123 was known for.

You might not be able to buy those LG Chem modules, because LG Chem reportedly ordered retailers to stop selling these for conversions.
 

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... maybe the Lifepo max current is lower also compared to Lipo but don’t know for sure
"Lipo" (actually Li-po) means "lithium polymer", which means a lithium-ion cell with a polymer electrolyte. The electrolyte has nothing to do with the electrode chemistry, and the LG Chem cells do not have polymer electrolyte (and the A123 cells probably don't, either). LiFePO4 and Li-polymer are not alternatives; the terms describe unrelated features of the cells. Yes, the LFP (LiFePO4) and NMC cells may have different maximum current limits for the same capacity.
 
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