It’s a fact that today’s digital SLR users almost always have at least one, and often multiple, spare battery packs for their cameras. But with more than one battery pack, it can sometimes be hard to keep track of whether all batteries are being used fairly evenly (in other words, that one or more aren’t languishing at the bottom of your camera bag), and to have an idea of when you’ve last charged each one.
The EOS 5D Mark II has the answer: you can actually “register” or memorize each LP-E6 battery pack you own, and keep track of up to six separate batteries right on the camera’s LCD screen. Here’s how it works:
Each LP-E6 battery pack has a microchip with a unique, 8-character serial number. You don’t see this number on the outside of the battery, but it’s embedded in the battery’s information source. When the battery pack is installed in the camera, you can register it using a menu command. This adds it to an in-camera list of LP-E6 battery packs, with serial number memorized and displayed.
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