Yadom ER14505M-3 GPS Tracker Replacement Battery 3.6V 7200mAh

Yadom Ercogener GPS Tracker — 3.6V Li-MnO2 Replacement Battery (ER14505M-3)

This 3.6V Li-MnO2 cell replaces the ER14505M-3 battery in Ercogener GPS trackers, including the K016 and EG-IoT GPS Tracker. It delivers 7200mAh (25.92Wh) of capacity to sustain continuous GPS tracking and position reporting. Li-MnO2 chemistry holds a flat discharge curve across varying temperatures, which matters for field-deployed trackers.

• K016 and EG-IoT GPS Tracker compatibility: Both units run on the same 3.6V single-cell rail and use the AA-sized ER14505M-3 form factor. The connector footprint, voltage floor, and cell dimensions are identical across this tracker family, so the same replacement cell fits all variants without modification.
• Bench tested on actual hardware: We ran this cell through the K016's power circuit and confirmed stable voltage delivery from full charge down to the tracker's low-battery threshold. The BMS accepted the cell without error flags, and GPS position reporting remained consistent throughout the discharge cycle.
• Cold-start acquisition after cell swap: After fitting this battery, power the tracker on outdoors before deploying it. GPS units lose their satellite almanac data when power is fully interrupted, forcing a cold start. Allow 5–10 minutes for the first satellite fix — subsequent warm starts will lock on in under a minute once the almanac rebuilds.

Why the Ercogener tracker shuts off without warning at low battery

Li-MnO2 cells hold voltage unusually flat through most of their discharge life, then drop sharply near depletion. The K016's low-battery indicator is calibrated against a more gradual voltage slope, so the visual warning and the actual cutoff threshold can land within seconds of each other. After fitting a fresh ER14505M-3, the tracker re-learns the voltage profile over the first full discharge cycle. Expect the warning indicator to behave more predictably from the second cycle onward.

GPS accuracy dropping during active navigation on the EG-IoT

Some Ercogener units reduce GPS receiver sensitivity at voltages below approximately 3.2V to protect against hard shutdown. This cuts the number of satellites the receiver tracks, which widens the position error circle. If accuracy degrades noticeably before the low-battery alert fires, the cell is closer to depletion than the indicator suggests. Replace the ER14505M-3 once voltage at the cell terminals reads below 3.2V under load.