The vehicle has a hand-held, currently on the market products according to the typesof mobile phone, GPS, GPS PDA, GPS module categories, regardless of what type ofnavigation products, power supply problem is one of the important factors to consider when buying.

But in these types of GPS devices on the power supply requirements minimum is probably the number of car GPS, these products are generally can use of vehicle power supply, thus driving may not need to worry about the endurance. However, with the intervention of many additional functions, when the vehicle GPS and can be used as a portable audio-visual equipment, the factors of electricity is more important thanever. Several other for power supply requirements, needless to say, the endurance oflength directly affects the machine usage.

Differences in the function of shrinking, product features perfect today, the endurancefor us to buy GPS navigator can also be said to be more and more. Power supply from these different types of navigation products, is nothing more than the following four.

Lithium battery

First appeared in the lithium battery from the great inventor Thomas Edison. In 1992 the successful development of Sony lithium ion battery. We then it will be widely used in mobile phones, notebook computer and other portable electronic devices. This type of battery can greatly prolong the using time, and because the lithium-ion batteries do not contain chromium, and nickel chromium batteries, greatly reducing the pollution of the environment. Therefore, the lithium battery can be said to be the preferred power supply device for electronic products.

GPS mobile phone with GPS, then PDA, including part of a car GPS and GPSmodules are used in lithium batteries. Application of these devices in lithium battery least only a few hundred Ma, like the new GD-70C these 7 inch screen big guy even3800 Ma of range, but most products is still concentrated in the 1000-2000 ma.

Using this power supply mode is most inconvenient that once the power light time can be difficult to find alternatives, unless you already have second batteries. We feel fortunate that lithium battery GPS module can and some Nokia battery general, if you happen to have a Nokia mobile phone, buy can look at.

Battery power

The invention of lithium battery than early for many years, in eighteenth Century westarted using this power supply mode. Until now, it still has its own advantage. And most obviously is to obtain dry battery is very convenient, walk into a convenience store and you can make your GPS back to life.

At present, the power supply of GPS products is t