Not really. As far as Canon and all DSLR batteries go I forgot that they had two cells in series. My bad. The main point is correct: 3rd party batteries all have the same voltage and require the same charging voltage. In principle, without a special security chip, any 3rd parties charger should work on any of these batteries. This is true for Canon, Nikon, Sony etc. Of course the configuration and dimensions of the battery will mean many different shapes for the chargers. There are small details of construction in the cells that make Canon batteries slightly better than 3rd party in terms of total number of shots you get. If you think that that small difference is worth the premium price then go for it.