I bought mine from Troybuilt and got that letter last week and posted it. I have taken apart the battery which is very,very simple using a flat blade screw driver to separate the case then clip the wires. The board snaps right out. Popped it into an envelope and sent to Troybuilt.
The black pearl can be powered externally as per this email I received from Troybuilt: IF you need to operate the screen while waiting for the replacement, you can use a 3 cell lipo battery with a JST connector with the supplied adaptors.
The black pearl can be powered externally as per this email I received from Troybuilt: IF you need to operate the screen while waiting for the replacement, you can use a 3 cell lipo battery with a JST connector with the supplied adaptors.