On top of all that, with points you'd have had a chance of not even having a dead battery because it might have stopped with the points open. I was only once that lucky.
All electronic devices are assembled with a secret "electronic smoke" inside. Once that smoke gets out, it can't be put back in and the device becomes toast!
When it's not running & the switch is left on, the smoke leaks out of those electronic modules a bit faster than the rate at which the battery goes dead.
Not laughing at you or makin fun, just lettin ya know, been down this road too!