Waterproof Battery Tender Junior

Waterproof Battery Tender - Maintain your 12-volt battery in peak condition. Extends battery life by 3-5 years. Specially designed to operate in wet, dry, hot, or cold conditions. Will not charge a dead battery. Great for maintaining batteries in cars and watercraft in storage. It will maintain a 100% charge constantly without damaging the battery. Spark free and temperature compensated, with short circuit and reverse polarity protection.Input 100-240 vac, 50/60 Hz, Output 12 V dc @ 800 mA. 3-year warranty.