Digital cameras, GPS, mp3 players — there are so many great little gadgets available to the traveler today that even the simplest bare-bones packers among us have batteries in their luggage. What is the most responsible way to deal with batteries when you are on the road?
First of all, if you must use regular disposable batteries, take them home with you! That way you can be sure to have them recycled. (Just google “battery recycling” and you’ll see there are dozens of options) If you throw out batteries while you travel you can be sure you are leaving a toxic footprint behind.
The more responsible (and conveniently, more economical) option is to bring a charger and rechargable batteries. If you also pack an electric voltage converter plug and a roll of duct tape, you’ll be able to juice up anywhere you go. (The duct tape is to secure the charger + converter into the wall socket, if needed. I perfected this method after several months in Asia!)
Not all rechargable batteries are equal, though. Research shows that Nickel Metal Hydride (NiMH) have the best environmental record of any small batteries on the commercial market. They are also cheaper than Nickel Cadmium and more user-friendly, since you don’t have to completely discharge them before recharging.
When selecting a charger, look for a “quick charge” feature so you aren’t still waiting for them to top off the next morning. Another great feature is an automatic shut-off for excessive charge or temperature, so your batteries won’t get fried by the charger as many soon do. Sony’s Super-quick Worldwide Battery Charger , for example, includes both of those features and is equipped to handle universal voltage from 100-240V.