Data Hacking

46 Part I — Hardware Hacks
battery. If this is battery is run down, then the device may not work properly and will need
repairing. Therefore, when storing a GPS unit with this kind of backup battery, always be sure
to fit new (or recently recharged) batteries and check them regularly.
Never put a GPS receiver that contains old batteries into long-term storage, as this increases the
risk of damage from leaking batteries.
Battery Do’s and Don’ts
The following guidelines will help you get the most from your batteries:
Power Hacks
Recharge NiCd and NiMH batteries as soon as possible after discharge to maintain peak
performance.
Never store batteries loose in a bag or pocket, which increases the risk of a short circuit
that can result in fire or injury. Store batteries in a proper battery box or holder.
Store batteries at room temperature. There is no need to store batteries in a freezer or
refrigerator to maintain peak performance.
Never use batteries after their expiration date.
Never dispose of batteries in a fire, as this can result in an explosion and cause serious
injury.
Extreme temperatures reduce battery life. Keep battery-powered devices away from
extreme heat or cold.
Take care that you insert batteries properly into your device. Some devices that use three
or more batteries might still function with one battery inserted incorrectly, but this can
cause battery damage that can potentially damage your device.
Dispose of used batteries responsibly. For online guidelines visit
www.duracell.com/care_disposal/disposal.asp.
There is no doubt that having auxiliary power (in addition to the internal batteries) is handy
when out and about with your GPS. The easiest way to accomplish this is to carry a stash of
batteries and replace them as they run out. This method, while effective, is very expensive and
not very eco-friendly.
When in a vehicle, another option is to use a power cord that draws power from the automotive
12-volt system via a cigarette lighter socket. Chapter 2 describes these kinds of cables and
how to make them.
Refer to Chapter 2 for details about how to build your own power cord cables.