Deltran Battery Tender Junior 12-Volt 750 mA Battery Charger

Because of winter days and cost of fuel I telecommute, work from home more. Not driving my car daily and sub zero temps drained my 2 years new battery quickly. Overnight charging with the Deltran Tender Junior allowed me to start up and drive if needed, but never fully charged the battery. The first spring 3 day holiday with constant 24 hour charging did result in a "green light" on the charger, signaling a full charge. Indeed, the battery performed, sounded and felt brand new after a 3 day full trickle charge. I use it mostly in winter when cold zaps my battery, this keeps it performing and I know my car will start the next morning. Idiot lights do work, though they seem sometimes not to if using the carger for less than 24 hours. 12 foot power cord worked fine with my 50ft extension to charge the battery. Overall, saved me money, tow truck calls and provided "next day" peace of mind knowing the car would start in winter weather.

Super easy and effective. Step 1 - hook to battery. Step 2 - Plug it in. Red light means charging, green light means "maintaining." If you need a cheap battery charge, buy this one!

Does what what it says it will do. Nicely made (for a China item), nice that it comes with an extra DC cord that can be attached to something that is hard to get at and leave it. Only one minor issue, it's made in China, but what isn't these days.

The batterie I purchased the charger for, is very low, but the charger
won't turn on to charge the batterie.
The light on the charger is blinking red.

Product worked as expected and at an excellent price. Connected to battery on 21hp lawn tractor and in 24 hours battery was fully charged. In the past everytime I went to use mower I had to jump start. I keep connected all the time and a full charge is maintained.