syncUp Tracker

I have used an inexpensive, external power pack multiple times. The results have been overwhelmingly positive. I have been able to keep the paltry, stock battery within the SyncUp tracker at 100% for up to 6 full days before having to rely on the SyncUp tracker's meager, internal battery.

There are a few drawbacks, however. One disadvantage is the direct result of an inconvenient physics principle. After the external power pack's battery is fully drained and the SyncUp tracker's built-in battery is diminished to a certain level, the SyncUp Tracker's internal battery's electricity apparently begins flowing back into the exhausted power pack. This will significantly reduce the battery life of the SyncUp Tracker's, already, inadequate battery by, perhaps, 33% or more. A higher quality external power pack with adequate control circuitry may remedy this problem.