great comments here and


great comments here and helpful.  My dilemma is cost. Shooting at trade shows an on the road you need two batteries and to charge quickly.  As a look at prices, it's a huge disparity, from a Canon branded battery, say BP 820 at around $110 and a BP 820 compatable on for $30!   I've had mixed results at Best Batt.    I bought a power pack for Canon ViXia HF 20 that didn't work after a week,   It cost about $15  –  anyone have thoughts on this huge price disparity or experience with Best Batt?

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