To install the Canon BG-E7 Battery Grip, the LP-E6 Battery is removed from the DSLR and the battery door detaches. The BG-E7 slides up into the battery compartment and locks into place via the tripod socket screw on the BG-E7. The BG-E7 provides its own tripod adapter threads - this functionality is not lost. The Canon BG-E7 Battery Grip holds two Canon LP-E6 Batteries that deliver double the number of shots or video time from the 7D. Alternatively, use 6 AA batteries in the included Canon BGM-E7 Battery Magazine. Six Alkaline AA batteries are rated for 400 shots (a single LP-E6 is rated for 1,000 shots). Since the AA batteries are not chipped, the 7D is not going to show you detailed battery information when using the BGM-E7. Though the BGM-E7 is a nice feature.Even if you only have one LP-E6 battery, the BG-E7 still functions fine. The AA option is nice for emergency purposes. Back to the grip. The Canon BG-E7 Battery Grip is very solidly built - it matches the 7D design well. They share a magnesium alloy frame and the BG-E7 retains the sealed battery compartment. Most of the controls present on the built-in 7D grip are also found on the BG-E7 including Shutter-Release, Main Dial, AF Point Selection, AF/FE Lock and AF-ON. And, don't forget the power on/off button |
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