If you've given your 512/612 caller a full, 12-24 hour charge, and the red light blinks (or doesn't come on at all) when you take the caller off of the charger, put a tape in, and turn it on, then that would indicate a dead battery.
To order a 12V replacement battery for your Johnny Stewart Game Caller, please contact Western Recreation at 1-800-525-1181.
To remove the battery:
- Remove the two shoulder strap screws while the caller is in the upright position (deck on top).
- On a sturdy bench or desk, lay caller on its side.
- Remove contents (deck and batteries) from the bottom case. Battery is wedged in there tightly, (not glued or screwed).
- The battery is attached to the bottom of the cassette deck with double-sided tape. Remove +/- battery terminals, and then take a good, sturdy, flat-head screw driver and pry the battery from the deck.
Remember to charge the 12V battery overnight to 24 hours prior to and after each outing, and every 2-3 months throughout the calendar year to prolong battery life.