I am someone who absolutely dreads having to end a shoot early, or have to rush shots due to batteries running out of juice. With that being said, I believe that you can never have too many batteries on hand with you on shoots, especially if you find yourself unable to utilize power from an AC outlet.
As I build my video equipment, I try to cut corners where I can so I can save my money for the bigger investments such as lenses, stabilizers and audio gear. When it came to purchasing additional batteries, I decided that going with an off-brand would allow me to stock up on more without having to put a serious dent in my wallet. I know that there’s the risk that the off-brand batteries may not hold a charge as well, or as long, as an OEM battery, but if I can purchase 4 off-brands for the price of 1 OEM, I’ll take my chances.
For those of you who only feel comfortable using OEM batteries, they run about $45.83 (+tax, free shipping) on Amazon.
On eBay, you can grab them for $14.99 a piece (free shipping). They ship from Hong Kong.
For generic replacements, the least expensive on Amazon is from Power2000 at $9.95 and is eligible for free shipping if you purchase at least $25 worth of items.
I happened to go with a seller from Hong Kong on eBay, who is currently selling generic replacements for $5.60 each (free shipping). I purchased three and, for international shipping, they arrived in decent time – about a week. After receiving them, I charged them and took them out with me to a Pete Rock/J. Rocc show that I went to a couple of weeks ago. I recorded off and on for nearly 4 hours, mostly in 1080p/24. I don’t remember what the battery level was at towards the end of the night, but I went out the next day and did another couple of hours worth of shooting before I got the low battery indicator.
Overall, I would say that I was able to get the same amount of life out of this generic replacement, as I do with my OEM battery. As for the quality of the battery and how long before I have to replace it in comparison to my OEM battery, I still have yet to find out. However, I feel as if I won’t have to worry about buying new batteries for quite some time.