Fast and shows a lot of information By Guest
The unit works great in the car. You just have to keep in mind to connect the DC barrel of the car charger to the DC barrel on the battery, and then connect the radio to the battery directly. If you have the larger batteries, connect the red/black connector to the red/black connector on the battery. The display shows how many amps are going into the battery while charging. Once the value gets to less than 0.2 Amps, the battery is charged up. That's very useful.
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Well made but beware of 15ma drain By Guest
This is a very nicely designed and well-built charger. It effectively charges LiFePO4 batteries from a vehicle cigar lighter port.
BUT -- beware that if you leave it connected with the vehicle off, the charger will suck 15ma out of the battery. So you cannot leave it unattended for more than a couple days.
In my application, I had planned to put my mobile rig in the car, powered by a LiFePO4 battery. At the same time, I had expected to use this charger to top off the battery from the cigar lighter while driving around. And it does that perfectly. But the 15ma drain means I have to unplug the charger from the battery if the car will be parked for more than a day or so. Not a huge deal, but I was disappointed that the specs don't tell you about this current drain.
I would have given 5 stars were it not for the power-off current drain.
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