Will 100 Amp WFCO Converter Charge Be Good For 400AH Lithium Battery Bank In Fifth Wheel Camper?
Published 02/23/2026
Question:
I have a 400Ah lithium bank in my fifth wheel. Is the WF56FR too much?
asked by: Rob
Expert Reply:
Good morning Rob, that’s actually where the # WF56FR ( WF-68100-AD) 100A RV converter charger makes the most sense.
With a 400Ah lithium bank, you can actually utilize the higher output during the lithium charge mode, which boosts to 14.6V for up to 1–4 hours depending on battery state
Just make sure:
-You have a 20A AC circuit available (some travel trailers use 15A which would need to be upgraded to 20A)
-Your DC wiring is 3 gauge or thicker (from charger to battery)
-The run from converter to batteries is as short as possible
For large lithium setups, the 100A isn’t overkill - it’s more efficient and won't get overworked / maxed out.
Are you charging mainly off generator or shore power?
Product Page this Question was Asked From
WFCO Auto-Detect RV Converter Charger - Deck Mount - 12V - 100 Amp
- Power Converter
- Converter Only
- Automatic Switch
- 12V
- 100 Amps
- AC to DC
- AGM
- Gel
- Lead Acid
- Lithium
- RV
- Multi-Stage Charge
- WFCO
more information >
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on Power Converter
Rob
2/23/2026
Oh okay cool. So when it's full, it won't burn up the battery bank and overcharge it?