Inview N911 GPS Replacement Battery 3.7V 1300mAh

Inview N911 — 3.7V Li-Polymer Replacement Battery (BALL-N911-DMED)

This 3.7V, 1300mAh lithium-polymer cell is a direct replacement for the Inview N911 portable GPS navigator. It fits the N911 unit and restores the onboard power supply that runs the GPS receiver, display, and navigation firmware. Capacity figures come from the product data: 1300mAh / 4.81Wh.

• N911 platform fit: The N911 uses a single-cell Li-Polymer pack at 3.7V nominal. The BMS on this cell is matched to that voltage rail and the charge termination logic the N911 expects. No modification needed.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the bench, confirmed BMS cutoff at the correct low-voltage threshold, and verified the protection circuit trips correctly on overcurrent — no false shutoffs during normal GPS operation.
• First power-on after fitting: After installing this cell, take the N911 outdoors and power it on fully before driving. A battery swap causes a cold start — the receiver has lost its ephemeris data and needs 5–10 minutes in open sky to reacquire satellite lock. Subsequent starts will be under a minute.

GPS accuracy dropping at low battery on the N911

When the N911 cell voltage falls below roughly 3.5V, the unit can reduce power to the GPS receiver module to extend operation. Lower receiver power means weaker signal processing, which degrades position accuracy — sometimes by tens of metres. This shows up as erratic route recalculations or the position dot drifting off-road on the map. Keep the battery above the mid-charge point during active navigation to keep the receiver running at full sensitivity.

N911 shutting off without any low-battery warning

This happens when the battery indicator is no longer calibrated to the actual cell's discharge curve. The unit's fuel gauge was trained on the old, degraded cell — it still shows one bar when the replacement cell hits the hard cutoff voltage and the device shuts down instantly. To recalibrate, run the N911 from a full charge down to automatic shutoff once, then charge uninterrupted to 100%. After that cycle, the indicator will track the new cell's capacity accurately. The hard cutoff on this cell sits at 3.0V.