Stupid Question! Victron IP22 charging second battery on factory inverter

[aircooled]

I have a small 100Ah WattCycle LiPO4 battery that I'm using for my camping trailer and overnight usage for CPAP, device charging, and light on the trailer. I'm currently charging using a Victron IP22 30amp charger when it is at home. A DC to DC charger is probably on the list for this winter, but until then, has anyone tried charging such a battery using the factory inverter and line power? I have a profile taking charging down to 15 amps which measured to about 120V at 320 watts. I'm separated from my grenadier until next week, otherwise it'd try it myself.

Thoughts?

 

[aircooled]

Followup on this. The worked PERFECTLY for my two week trip! Sure a DC to DC charger is going to be more efficient in energy and space, but in a pinch a direct plug in charger to top off the portable lithium battery works with no complaints or errors from the factory inverter of charger. I set the charge from 30 amps down to 15 amps in the Victron app settings. Once I source a spare fuse for the inverter circuit I might up the charging amperage to find the current limit.