Motor mover + Li-ion battery = fail?

[Rahdo]

So our small Swift Excel 382 caravan came with an enduro em203 motor mover, which usually works, but sometimes it fails and flashes 4 blue lights on the receiver, which is an overvoltage warning. Apparently this is happening because I replaced the lead acid house battery with a 12V 100Ah LiFePO4 Battery which, when saturated, outputs more voltage and a traditional battery, and that makes the motor mover shut down.

What can I do to solve this, other than spending an hour purposely running down my battery to get it to outputting lower voltage whenever we need to move around, which is incredibly inconvenient as one might imagine!

 

[birdman101]

If the Battery is overcharged and you are using the charger as used on the previous battery have you changed any settings on the charger if it has them. Otherwise it may be your charger is not compatible with the Battery fitted

 

[Rahdo]

when i put the li-ion battery in, i also installed a victron controller since as i understand it the old wiring for lead acid batteries could treat the new battery poorly. so charging the battery is no problem, it's doing great. it's just the 20 year old motor mover assumes lower voltage than what this battery outputs because it's new and things were different back then (i guess lead acid batteries put out 12.7 or so voltage, while this battery happily puts out 13.8, and that's what trips up the motor mover).

so i need something that can reduce the voltage coming from the battery to the motor mover. i read about buck converters, but they are only for small amperage usage, and a motor mover is heavy amperage.

 

[GUMPY]

Who diagnosed the LifePo4 being the fault?

My LifePo4 battery runs the MM just fine at 13.5v
The MM should operate between 11.5 and 14.5v as that's the range of voltage you can get with an LA battery.
In the manual it says that it's suitable for use with an LifePo4 battery.
There may be a voltage limit setting within the software of the MM that has been set low and could be adjusted to cope with the LifePo4.

 

[Rahdo]

well, it's the motor mover itself issuing the error (4 flashed blue lights indicates overcharge according to the sticker on the receiving unit). I don't have a manual for this motor mover at all and my google skills couldn't turn one up.

i don't see anything on this motor mover that indicates i can do anything to modify software or anything. no wireless connection, no panel, just a receiving unit and the actual mechanism outside that connects to the tires and the remote control. i'm wondering if you have a newer version than what i have? i actually tried contacting enduro by email and phone, and got nowhere... no returned calls, no answered emails

attached is a picture of my receiver that flashes the 4 blue lights when it decides not to work...