The extended battery has a 17,800 mAh battery that extends battery life specifically designed for the Spark Nano 7 to ensure that you’re able to track what you want when you need. This battery accessory includes both the charging cable and the output cable.
Please Note: This extended battery kit come's in two version, USB-MINI is ONLY compatible with the Spark Nano 7 purchased before July 31st 2021. The Battery USB-Type C is compatible with the current Spark Nano 7.
Special Feature: Extended battery allows you to track for up to 4 months longer than traditional battery.
3.7 Volt, 17,800 mAh
Rechargeable lithium battery