Here are a few things that worked for me with rechargeable batteries:
- Take the batteries out at night and tuck them into the small pocket in my sleeping bag, keep them a little more warm to prolong battery life. Most sleeping bags have a small velcro or zipper pocket up near the head.
- Find compatible batteries that provide more juice. I learned that the “mAh” number on the battery indicates the power output. (mAh stands for milliamps per hour.) The stock battery that came with my camera was 840mAH, but I found some eBay that were 1500mAh. Needless to say, I bought several of them.
I used a Canon S400, and this plan worked beautifully, even during my longest stretch without resupply (14 days). I even had enough spare battery power near the end to bail out someone who had a similar camera and ran out of battery power. Whatever you do, don’t run out of battery power. The Sierra is just too incredible to leave those photos behind.
Lisa