“My phone is dead” is no longer an acceptable excuse for missed opportunities, even if you’re in the middle of nowhere. If you want a backup plan for your phone that doesn’t require batteries or an outlet, check out the new Powertrekk fuel cell charger. This gadget uses water and a fuel pack, known as a “Powerpukk,” to charge any mobile device powered by a USB port, even when you’re off the grid. You can also bypass the Powerpukks by using the internal rechargeable battery for energy storage, which can be charged via the fuel cell or a USB connection. As the first water-based fuel cell battery released on the consumer market, the Powertrekk is a portable, green method to get juice while away from the grid. Buyer beware: You could end up being more accessible than you want to be on your back-country camping trip. $229.99, 3-pack of Powerpukks for $11.99. myFC; Stockholm, Sweden; www.powertrekk.com.