Having found that the Wi-Fi and GPS functions drain the battery relatively quickly on my new Canon EOS 6D, I thought it would be advisable to get a spare battery and ordered this PowerPlanet LP-E6. Unfortunately the first battery I received from PowerPlanet brought up the message "Communication with Canon LP-E6 battery is irregular. Continue to use this battery?" It was possible to select 'OK' and use the camera, but the battery indicator bar showed empty and the menu option to show battery information was disabled. A search of the internet revealed a lot of compatibility issues with the EOS 6D and third party batteries, and it appeared that the PowerPlanet LP-E6 was not immune from this. I therefore initially gave the product a two star review.
Following the appearance of my review, I was contacted by PowerPlanet's customer service department and offered a new LP-E6. I'm pleased to report there are no issues with the replacement battery. It appears that PowerPlanet have dealt with the previous compatibility issue. Not only does the battery's power level show on the camera's main display, its serial number and remaining capacity can be accessed via the camera's menu system alongside those of the original Canon battery.
As the PowerPlanet LP-E6 has a capacity of 1600 mAh compared with 1800 maH for the Canon original, battery life is inevitably slightly shorter. Given the level of customer service shown by PowerPlanet, however, and the fact that their battery is less than a quarter of the price of Canon's, it seems only fair to give this product five stars.