The 6 cell extended life GPS battery works with the GL300 series GPS units.
Extend the life of your GPS unit up to 3 months, depending on movement and ping rate
for maximum life and use with your GPS unit.
- 6 cell, 13,200 mAh rechargeable lithium ion cell battery pack
- Charging cable and adapter
NOTE: This maximum life battery must be used with the Large GPS case.