Etter, Ted ; Plummer, David J. 2011. Hand-held Devices: Recharging Batteries in the Field. 1166 2314. Missoula, MT: U.S. Department of Agriculture, Forest Service, National Technology and Development Program.
Forest Service employees working in the field sometimes need to recharge batteries for hand-held devices, such as cell phones or global positioning system receivers. Chargers are used to alter power from one voltage source to another voltage. A charger and battery must be compatible because overcharging a battery can result in serious mechanical and electrical failures. The Missoula Technology and Development Center identified portable power sources, voltage converters, batteries, and battery chargers that may keep portable electronic devices running for many days.
Keywords: cell phones, chargers, converters, GPS receivers, hand-held devices, rechargeable batteries, safety at work, solar power
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