Powermax PM3-55LK 55 Amp 12 Volt Power Supply (Replacement for WFCO WF-9855) Battery Charger with 3 Stage Smart Charging Mode, Built-in Cooling Fan and LED Indicator Light, Lithium Compatible

Good converter

Returned

Quick and easy to use charger, use it for multi cars in a body shop. works great.

Yes it will charge lithium’s but you must leave it switched to “fixed output” and adjust it to 14.4 volts. Once the battery achieves this voltage you must manually turn it off, as there is no “float” charge in “fixed” setting. Think of it as a 50 amp power supply with a stable voltage output in “fixed” mode. If the switch is placed in 3 stage it will not charge lithium’s correctly (even if you set the V in the in fixed mode). It seems to time out and go to a pre set lead acid absorption mode (too low for lithiums) regardless of what the “bulk” voltage is set at. I can only assume that it will charge lead acid fine in 3 stage plus you can set bulk voltage. Fan goes on and off as needed and not too loud.

Im pleased with this product good power and decent price. Dont know the lifespan but hopefully years to come.

Replaced my blown converter in my camper works amazingly