What make/model camera? Lithium batteries (
make sure they are authentic, be careful with eBay), or a solar panel if camera is compatible and will be stationary for several months or longer. Also, Tactacam just came out with a rechargeable lithium battery pack if you have a Reveal. I have no experience with it, but you might want to research it if you run Reveal cellular cameras.
Tactacam Lithium Cartridge Rechargeable Battery
*** On a side note, I have historically purchased Lithium AAs at Sam's Club at the best price available. In the last 6 weeks, they have increased price twice. This is the latest price in my neck of the woods. ***
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