Binatone Z430BT Replacement Battery 3.7V 1300mAh

Binatone Z430BT — 3.7V Li-Polymer Replacement Battery (P603562N)

This 3.7V 1300mAh Li-Polymer cell replaces the original battery in the Binatone Z430BT portable GPS navigator. It matches the OEM part number P603562N and fits the Z430BT's internal battery slot at 61.50 × 33.50 × 6.00 mm. Swap it in when the original cell no longer holds enough charge to complete a journey.

• Z430BT fit: The Z430BT runs a single-cell Li-Polymer architecture at 3.7V nominal. This cell matches that voltage rail and the connector pinout, so the device's charge management circuit reads and controls the cell correctly on first boot.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a GPS navigator test rig. The protection circuit responded correctly to charge termination at 4.2V and engaged undervoltage cutoff before the cell reached damaging depletion depth.
• Cold-start satellite acquisition after fitting: After fitting this cell, power the Z430BT on outdoors and let it acquire a satellite fix before driving. A full power interruption forces a cold start — the receiver has no stored almanac data and needs 5–10 minutes for first lock versus under a minute on a warm start.

GPS accuracy reduced at low battery on the Z430BT

As cell voltage drops toward the low-battery threshold, some GPS navigators — including units in this class — reduce RF receiver sensitivity to cut current draw. On the Z430BT, this can show as position drift or a wider accuracy radius on the map. The fix is straightforward: keep the device on USB power during long routes, or charge before the battery indicator drops to one bar. A freshly charged cell at 4.2V delivers full receiver headroom from the first fix.

Z430BT shuts off without warning before the battery indicator reads empty

This happens when the battery gauge is no longer calibrated to the actual cell's discharge curve — common after the original cell has aged and capacity has dropped. The device's low-battery threshold triggers at a voltage the old cell hit quickly, but the indicator never caught up. After fitting this replacement, run one full charge-to-cutoff cycle without USB power connected. This lets the fuel gauge re-anchor its empty point to the new cell's actual 3.0V cutoff floor.