The battery tender BT400's lightweight, compact size makes it ideal for those hard to fit spots. Batteries are constantly maintained and ready to go! All Battery Tenders use Deltran's ISM (Infinite Sequential Monitoring) charging technology. ISM takes the guesswork out of charging and maintaining your battery. The ISM microprocessor includes every step necessary to evaluate, charge and maintain the battery at full charge. The charge/maintenance sequence is always complete and fully automatic. Switches automatically from charge to float!

• Reverse polarity protection ensures safety.
• Spark Proof!
• 12 foot output cord.
• Weight: 0.91kg
• Size: 80 X 63 X 36mm
• Plastic enclosure
• Input: 220 - 240VAC @ 50Hz
• Output: 12 Vdc @ 400mA
• For batteries up to 30 Ah
• 2 year warranty

*Product may vary from image shown.