Andrius Simutis
Veteran
One other reason I stick with Canon batteries on Canon cameras...the chip. Canon is notorious for not cooperating with third party vendors. They don't release any of their lens protocols so companies making lenses for EF have to reverse engineer and guess if they're getting it right. This is why some third party lenses don't always play nice with certain Canon features. For a battery, it's going to be in the information sent to the camera about how much power is left and then in the charger where the chip is going to mess with you.