Navman N60i Navpix GPS Compatible Battery 3.7V 1200mAh

Navman N60i Navpix — 3.7V Li-ion Replacement Battery (E4MT081202B12)

This 3.7V 1200mAh Li-ion battery replaces the OEM cell in the Navman N60i Navpix portable GPS navigator. It fits the N60i Navpix directly, matching the original connector, dimensions (51.02 x 36.46 x 6.38mm), and BMS voltage thresholds. Capacity is 1200mAh (4.44Wh), matching the factory specification.

• N60i Navpix platform fit: The N60i Navpix uses a single-cell 3.7V Li-ion pack with a low-current draw profile typical of portable GPS units — the GPS receiver, display backlight, and map processor all run from this one cell. The BMS on this replacement manages the same charge and cutoff thresholds the device expects.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the N60i Navpix platform. The BMS handshake completed correctly, charge acceptance was normal, and the device reported battery status without fault flags across multiple cycles.
• Cold-start behaviour after fitting: After fitting this battery, power the device on outdoors before driving. The N60i Navpix performs a GPS cold start after any full power interruption — first satellite acquisition can take 5–10 minutes. Subsequent warm starts drop back under a minute once the almanac is cached.

Active navigation draining the N60i Navpix battery faster than expected

The N60i Navpix runs the GPS receiver, map rendering, and backlit display simultaneously during active turn-by-turn navigation. That combined draw is significantly higher than standby or map-browsing mode. Display brightness is the single largest variable — full brightness during daytime navigation can cut total operating time noticeably compared to mid-brightness settings. Reducing backlight to the lowest comfortable level is the most direct way to extend use between charges.

N60i Navpix shutting off without a low-battery warning

After fitting a new cell, the fuel gauge calibration stored in the device may not match the new battery's actual discharge curve. The unit tracks voltage against an internal table — if that table is off, the low-battery indicator may not trigger before the BMS hits its cutoff voltage and shuts the device down. To recalibrate, run the battery down until the device shuts off, then charge it uninterrupted to 100%. One full cycle is usually enough to realign the indicator. The BMS cutoff on this cell is set at 3.0V per cell.