Any suggestions on how to keep batteries warm in zero degree temperatures while climbing Mt. Kilimanjaro?

Any suggestions on how to keep batteries warm in zero degree temperatures while climbing Mt. Kilimanjaro?

Keep the batteries underneath your jacket. This is how I keep spare batteries
war in the winter time.

If this is not possible, you can get these small, cheap, and light chemical packages/patches called "hand warmers" or "feet warmers". Once you open the sealed package, the patches start (due to oxygen) to warm up to about 40 C, i.e. 100 F, and they stay warm for several hours. The best ones I've used stay warm for about 6 to 8 hours.

Wait ten years for global warming to really kick in. Should heat up Mt. K a bit.

Having shot many times in sub zero temps I have found using the chemical/oxygen hand and toe warmers the best route. I would also add that storing the batteries in a small soft sided insulated cooler helped considerably especially at higher elevations. The cooler doubles as a place to put a sandwich that won't freeze solid. If you need extreme heat than look for survival packs. They are 8.5 x 11 in size. Get really hot, in the neighborhood of 150 degrees and last for 12 hours. The higher you go the less efficient all the heater packs will become. You can also use an electric sock with a 9 volt battery. Good Luck & stay warm

Jason - In Alaska, the mushers sew pockets on the inside of there parkas to keep batteries in/warm. Their headlamps are the only light they have most of the time.

Regards,

Law

When I climbed Mt. Rainier I kept my Powerbars in my pants pockets. Otherwise they'd be impossible to eat. Keeping them in a shirt pocket or a pouch, deep under the innermost layers beneath the parka, should do the trick.

Once your battery is mounted on the camera you'd have to put some sort of heat source under the camera cover to keep it all from freezing.

well in the mean time you could keep them in some reflective insulation and just wrap them. you would be suprised how good that stuff acually works.