1.5 Amp Fully Automatic Battery Charger/Maintainer 

A lead acid battery loses about 1% of its charge each day of inactivity.  Combine that with the fact that cold temperatures reduce the battery's power by 60% or more - and you may have trouble starting your engine even though your preheater has the engine at summer-like temperature.

This neat little unit keeps 12 volt batteries safely charged because it is fully automatic - turning itself on and off as needed to prevent overcharging. Allows safe charging of most batteries that may have a long storage period. "On Board" feature allows mounting of charger next to battery on autos, boats, motor homes, ATV's, snowmobiles, motorcycles, lawn tractors, emergency generators or water pumps, and other infrequently used vehicles. Hardware and mounting brackets are included.

We have ours laying on the floor in the rear baggage area of our Cherokee 235 and keep it plugged in between flights so the battery is always fully charged.

• Ideal for maintaining full charge, and for keeping battery warm.
• 1.5 amp trickle charge rate-charges in 2 to 12 hours.
• LED lights indicate "Power On" and "Charged".
• Reverse-polarity protection.
• Rugged molded plastic case is resistant to water, gasoline, oil, solvent, and acid.
• Output cords connect to battery post bolts.  Terminals may be replaced with clips for non-permanent hookup.

2 yr Limited Warranty

THE WARRANTY ON THIS ITEM IS PROVIDED BY THE MANUFACTURER.  WE ARE A RESELLER AND WILL NOT ACCEPT RETURNS IF THE PACKAGE HAS BEEN OPENED BECAUSE WE CANNOT RESELL IT TO ANOTHER CUSTOMER BECAUSE WE HAVE NO WAY TO VERIFY A RETURNED UNIT HAS NOT BEEN DAMAGED.

Specifications:

Length:	5 in.
Width:	3.5 in.
Height:	1.5 in.
Weight:	2 lbs

$39

This device is not FAA approved for on-board mounting in certificated aircraft, however, if not permanently installed it does not require FAA approval.  If you want to permanently install it in the aircraft, check with your local FSDO for their requirements... it may be allowable with a Field Approval Form 337.