Lithium Battery upgrade.

I recently upgraded to Lithium and ended up with this charger for $169 off of Amazon. It pulls about 9amps on the 120V circuit when applying a 60+/- Amp charge to the batteries. It cycled thru the phases as advertised.

RecPro RV Converter 75 Amp | RV Power Converter & Battery Charger | 4 Stage Smart Charging | 120VAC to 12VDC | 13V to 16.5V Operating Range

I relocated the charger to the battery area so it is more accessible. To remove the previous one you had to remove wall panels in the basement. I used an 15amp rated 6' appliance extension cord.

4 stage would imply that it also has a "desulfurization/equalization" setting. You need to make sure that it NEVER, EVER goes into that mode or your LFP batteries are done for. Hopefully there is someway to turn that off or disable it, or it's smart enough to never go into that mode. I'd be very scared of that one.
 
4 stage would imply that it also has a "desulfurization/equalization" setting. You need to make sure that it NEVER, EVER goes into that mode or your LFP batteries are done for. Hopefully there is someway to turn that off or disable it, or it's smart enough to never go into that mode. I'd be very scared of that one.



Thanks for the feedback I will figure that one out!
 
I recently upgraded to Lithium and ended up with this charger for $169 off of Amazon. It pulls about 9amps on the 120V circuit when applying a 60+/- Amp charge to the batteries. It cycled thru the phases as advertised.

RecPro RV Converter 75 Amp | RV Power Converter & Battery Charger | 4 Stage Smart Charging | 120VAC to 12VDC | 13V to 16.5V Operating Range

I relocated the charger to the battery area so it is more accessible. To remove the previous one you had to remove wall panels in the basement. I used an 15amp rated 6' appliance extension cord.

I agree with X-rated, that is a Lead Acid Converter, not a Lithium capable Converter.

Also, in your installation, did you disconnect the OEM Converter? Not critical if you didn't, unless, you are Boondocking and running an inverter (then you would have batteries powering the Inverter, which is powering the Converter, which would be charging the batteries that are powering the Inverter..., not a good thing).
 
I don't know, but with a good BMS, does it really matter what the converter is doing?

The BMS is the gateway for electrons. It allows/prevents electrons going in/out of the batteries. A good one should prevent any real issue. Sure, if you put 60V in it, the BMS might burn up, but thinking that everything is working properly, if the converter is pumping out +15v, I know my BMS would shut down.

I know my settings would prevent any damage from being over charged so those fancy multi-stage converters would not ruin anything. I also believe even the cheapest off the shelf LifePo4 batteries have a BMS that would prevent damage. I know, I am sticking my neck out there considering how cheap some of the products are made. I would believe the biggest fear of a LifePo4 battery failing is a cheap BMS and if it does not have low temp disconnect [if you live in those conditions].

I am not saying you should put it on a multi-charge setting, but if you did, I would not lose sleep over it.
 

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