LubriMatic 75-030 2 Quart Professional Battery Filler with Automatic Shut Off Shuts off automatically when battery cell is at proper level, no over filling Features the double action fast flow valve tip that prevents after-drip Stops surface discharge caused by wet battery Tough, polyethylene LubriMatic Professional Battery Filler offers convenience and the safety features you need Shuts off automatically when battery cell is at proper level, no danger of over filling Features a double action fast flow valve tip that prevents after-drip Stops surface discharge caused by a wet battery Tough, polyethylene construction; safe to use with battery acid; 2 quart capacity