I have 2 third party lp e6 batteries but i can no longer charge them. I have them for like a year, they used to work perfectly with the charger i had with 7D but since i bought 70D they only worked for like two weeks and now they no longer charge. The original battery does however so i guess the charger is not broken. The light on the charger blinks rapidly which i guess is some sort of communication error. Also when i insert them into the camera it asks me whether i really wanna use them "Communication with canon LP E6 battery is irregular, continue to use this battery? Any ideas how to make them work? I could probably buy the original batteries but they are so god damn overpriced, and even though i can afford them im not willing to give them such amount of money for a battery. Is it possible canon intentionally made third party batteries not work with their new stuff?