Atrack AK7 GPS Replacement Battery 3.7V 600mAh

Atrack AK7 GPS Tracker — 3.7V Li-Polymer Replacement Battery (N068413)

This 3.7V, 600mAh Li-Polymer cell replaces the original N068413 battery in the Atrack AK7 GPS tracker. The AK7 is a compact real-time location tracking device used in field operations. When the original cell degrades, the tracker loses the ability to hold charge through a full session — this replacement restores that.

• AK7 GPS tracker fit: The AK7 uses a single Li-Polymer cell at 3.7V with a low-current draw profile suited to GPS receiver circuits. The N068413 cell matches the voltage rail and physical envelope the device expects — 42.62 × 26.30 × 4.60mm — so it seats correctly against the BMS contacts.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles against the AK7's BMS. The protection circuit handled low-voltage cutoff correctly and did not trip on normal GPS receiver current draw.
• Cold-start satellite acquisition after swap: After fitting this cell, power the AK7 fully on outdoors before use. The device performs a cold start after any full power interruption — allow 5–10 minutes for the first satellite fix in open sky. Subsequent warm starts resolve in under a minute.

GPS accuracy reduced at low battery in the AK7

As the N068413 cell approaches its low-voltage threshold, the AK7 reduces power to the GPS receiver to extend operation. This lowers receiver sensitivity, which degrades position accuracy — particularly in urban canyons or under tree cover where signal is already marginal. The tracker may still show a fix, but the reported position can drift by tens of metres. Keep the cell above 3.5V during active tracking sessions to maintain full receiver sensitivity.

AK7 shuts off without warning before the battery indicator shows empty

A worn original cell has lower internal capacity than its rated spec, so the terminal voltage collapses faster under load than the indicator expects. The AK7 reads voltage to estimate charge level — if that voltage drops sharply under GPS receiver load, the BMS hits its cutoff threshold before the on-screen indicator reaches zero. After fitting a new N068413 cell, run two full charge-discharge cycles so the device recalibrates its voltage-to-capacity curve. If early shutoff persists, check that the charging source is delivering a full 4.2V at end of charge.