am “Canon” born and raised. I bought the 5Dmk1, 5Dmk2, 5DSr and 5Dmk4 brand new and all from New York. I bought 4 new official Canon batteries every time I bought each camera, so now some of these Canon batteries are starting to get tired. At some point I will buy an “R” camera, so I wanted to buy some high power downhill batteries. I've never really been a third party buyer, always choosing to buy OEM (Canon) hardware, so this was my first time purchasing a third party battery. I've heard so many horror stories about cheap Chinese versions of LP-6(+N+H) drums, but these K&F drums are great! What I was thinking was not clear from the advertisement, other than charging via USB cable, could these batteries be recharged in the official Canon charger and can they be recharged in third party chargers. YES, they can and do interface and work/register with each of the cameras listed above as if you were using official Canon batteries. I have no hesitation in recommending these cells. They're not cheap for third-party batteries, but you get more than you pay for with these...they're great value for money.