Upgrading from Lead-Acid to LiFePO4

What changes when the old bank comes out: charger, wiring, weight and expectations.

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What changes when the old bank comes out: charger, wiring, weight and expectations.

What has to change in the system

The charger profile changes first, then the mounting, then your expectations about runtime โ€” lithium delivers more of its rating.

Weight, space and cost expectations

Lithium is lighter and smaller for the same usable energy, and pays back through replacements avoided.

Questions

Short answers to the ones that come up most.

Can I keep my old charger?

Only if it has a lithium profile. Otherwise it will overcharge the pack and the BMS will keep disconnecting.

Is the wiring still suitable?

Usually yes โ€” lithium holds higher voltage under load, so the same cable performs better.

Do I need to change the alternator?

In vehicles, add a DC-DC charger or a lithium-aware regulator.

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