testifire 2000 - Battery not charging
This could be due to the compatibility between the higher-current Solo727 3A charger and the lower capacity 2.2Ah Solo760 Battery Baton.
In this case, the LED on the charger will not illuminate (be off) when connected to the battery.
Check correct battery / charger combination is being used. The Solo727 charger will only charge the Solo770 Battery Baton.
Check the fuse in the plug.