Do Car Batteries Automatically Recharge

There's a lot to like about this charger: you can test battery strength (without even plugging it in to any kind of power), you can power by AC wall plug, or even by (provided) DC car-lighter plug so you can recharge batteries inside your car. I love the fact that I can change plates and recharge different batteries entirely (I just got the two independent plates to be for Nikon EL15's). You can even power a USB device at the same time, in case your digital camera or camcorder needs its batteries topped-up. There's overcharge protection that turns the device off automatically (to avoid harming batteries), as well as overheat protection. It even detects defective or shorted batteries and protects the charger. LCD screen is easy to read... charging time (right now) is around an hour, but it can take longer for older batteries. This thing weighs about 7.5oz (218g) and sits quietly in the corner doing its thing. :-)

I use this to recharge my backup batteries in my car while I'm still using the camera. Also it speeds up battery charging overnight by allowing the charger to charge one and to connect the camera to a USB power port on it at the same time to recharge a second battery from one wall socket outlet.

This is a great product. I have 4 Nikon batteries for a full day of shooting but need to recharge batteries in the car or hotel room. Watson is a lifesaver for this need.

one more option to recharge my batteries.

Bought this because I need to recharge 2 batteries at once. It's the same as the one that came with the DSLR.

Recharge Canon Batteries

Most of the batteries recharge in about an hour.

I have bought several of these batteries for my D-5’s so I can go for days before having to recharge!!

Tired of throwing away batteries - get these - better for the environment and they keep going and going, then recharge, and keep going and going.....

Eliminates the need for expensive C batteries. Simply recharge and you're good!