After pulling the spirit PKE out I found the battery's dead of course, but then after changing I remembered that the run time on them Sucks. since it starts to glitch once the voltages sags.
So on to Cramming a 2500MAH (real MAH not chinese MAH) 18650 into it I did some rough measurements before hand, but man it's a tight fit.
Lots of trimming of the internal battery compartment and the area the battery cover sits on.
In this case I already did the mod to make the wings use both buttons to control them. I broke the speaker so no sound... which is good with me.
Inside we have a combo Charger/ BMS.
Also I did a Magnetic charger and stuck it in the spot where the belt clip goes.
Here it is charging
Was thinking there is enough room to do a QI wireless charger for those that have eliminated the belt clip hole. Might do that for the next one.