SyncUp Battery Life?

I bought 2 SyncUp units to put in my kid's backpacks.   The website and the sales rep told me that the batteries will last about 7 days.   That's not true!

I have to charge these every 2 days.   I am thinking of returning them. 

I bought mine 3 weeks ago when I got my new iPhone and I only charged it once, still hasn't died yet. Still tracking my car every where I go :)

love this tracker because I can always know my car is still there :)

I think the sync up tracker's major defects are the battery life and charging cable.  I am relatively sure making the tracker twice a big would extend the battery life to 10+ days.  Why any company would use a proprietary charging port rather than an UCB-C port is beyond comprehension.   I have three of them and I use them as stealth trackers in my cars.  In order to maintain the battery life, I use a rear USB power port to hide the tracker somewhere in the back of the car.  If it were not for the current promotion of $2/month/device I may have not signed up. 

I have a SyncUp Tracker that is under warranty. I have been experiencing a rapidly discharging battery issue. The SyncUp Tracker battery is depleting from 100% to 0% in about 36 hours. This occurs with the SyncUp tracker completely stationary and within a virtual boundary for the entire duration. All SyncUp Tracker settings are set appropriately to maximize battery life. I will not accept a refurbished replacement SyncUp tracker from T-Mobile. I have received replacement devices as warranty replacements in the past, and many of them are older than the defective device they are replacing. Also, the warranty exchange processing fee, especially for an inexpensive device such as a SyncUp Tracker, is completely ludicrous. If a T-Mobile device fails under warranty, T-Mobile should stand behind its warranty. The customer should not be expected to bear the brunt of a poorly engineered or manufactured device.