I just purchased a Canon EOS 7d Mark ii from B&H. Not only did I get the "full" wi fi kit with lens, canon battery and recharger etc, they threw in 2 Pawa batteries with a separate charger. I noticed that the specs are a little different. Canon is 7.2V and 14Wh and the Pawa is 7.4 V and 11.84Wh. I have use both batteries and so far so good. My question is can I just use one of the rechargers for both batteries?