Canon has issued a product advisory on its LP-E6 batteries. They have stated, “In rare cases, the orange lamp on the Canon Battery Charger LC-E6 will blink rapidly at regular intervals when the Canon Battery Pack LP-E6 is inserted. In such cases, charging the Canon Battery Pack LP-E6 in the Canon Battery Charger LC-E6 is not possible.”
The Canon LP-E6 Battery Pack and Canon LC-E6 Charger are compatible with the Canon EOS 5D Mark III, EOS 5D Mark II, EOS 6D, EOS 7D, EOS 70D,
EOS 60D and EOS 60Da.