The extended battery pack is a great option to extend the battery time of your portable GPS tracker. This battery will add about 2-3 months to your tracker reporting every 1 minute. With a slower report frequency you will get more months out it. Battery charger is included. Tech Specs: Box Dimensions Inside: 5.5 x 4 x 1.8 Inches Outside: 5.75 x 4.5 x 2 Inches Battery Nominal Capacity: 17600 mAh Nominal Voltage: 3.7V Operation Voltage: 3.0V~4.2V Magnets Magnets 1.5 Inch diameter Strong Neodymium (NdFeB) Magnets. Will also work with the older GL300 tracker model.

Product Features

• Watertight GPS Tracker Battery Pack with two 1.5 Inch diameter Strong Neodymium (NdFeB) Magnets
• Inside: 5.5 x 4 x 1.8 Inches
• Outside: 5.75 x 4.5 x 2 Inches
• Capacity: 17600 mAh Voltage: 3.7V