Not familiar with the Trackimo, I use TKstar GPS size of a half dollar coin and is free with the app, I would be cautious putting it close to the battery, if you do, use some sort of insulation from EMF ( Electro Magnetic Field ) as the lipo batteries produce fields especially when discharging high amps, these will cause loss of gps signal, The TK uses your hotspot on your phone to track for free, or you can purchase a SIM card and use 3.4G network.