Problem using Lithium batteries on an Inverter or just bad luck?

[Ann-Marie]

The inverter (Tripp Lite) has a built in charger with automatic change over to inverting when the input power is off.
I switched the 12 volt lead-acid battery on my inverter to a Lithium of the same capacity.
When running and putting out 120 volts it worked fine.
When I plugged in the 120 volt charging line it started to charge and then the "charging" breaker tripped after about 5 seconds.
When I tried resetting the breaker the inverter blew up dramatically. Sparks, smoke and big BANG. Battery voltage was 13.4.
It had been working for years on the Lead Acid battery and all I did was switch to Lithium (YES I did get the polarity right :))
Has anyone else had this experience?
I described the battery switching incident to support at Tripp Lite but they said I had not done anything wrong (but I didn't admit I had switched to Lithium without checking first).
Did the charging function fail due to the low impedance of Lithium batteries? In most vehicle installations there is the cushion of cables between the charging sources and the batteries but in an inverter it is deliberately adjacent to the batteries with heavy cables that would provide no protection against excessive charging currents.

[Team Dougherty]

Is the inverter designed for lithium cells?

[CatFan]

What lithium battery?

[Ann-Marie]

:( No the inverter pre-dated Lithium batteries.
Battery was 100 amp hour LiFePO4, "drop in".
I suspect the low impedance overwhelmed the charging current protection of the inverter. It has a thermistor attached to the heat sink that is supposed to lower charging current to limit temperature but that would not protect the power transistors from fusing due to high current into a low impedance load.
The circuit breaker that popped was supposed to protect this.
But could be just bad luck, I don't see others reporting this problem.
I've identified the failed transistor(s). I have ordered replacements, worth a try to revive it.