Be sure to keep your portable navigation systems running at their full potential with a GPS car charger. Whether you use your GPS navigation system for hiking, fishing, hunting, or just going about town, keeping your system up and running will assure you of quality service when you need it. Most navigation units come with a GPS car charger designed specifically for that model but you can also find universal models with interchangeable adapters. These are very convenient for saving space if you carry more than one model or travel with friends who have a different system. Simply switch the adapters to accommodate the unit you want to charge and away you go. Keeping your batteries at their optimum capacity really is as simple as just popping it into your charging port.