EN-EL5 Klicktel Navigator K5 Replacement Battery 3.7V 1000mAh

KLICKTEL Navigator K5 — 3.7V Li-ion Replacement Battery (EN-EL5)

This is a 3.7V, 1000mAh Li-ion cell that replaces the original EN-EL5 battery in the KLICKTEL Navigator K5 portable GPS unit. It fits the K5 directly and restores the device to normal operation when the original cell has lost charging capacity. Dimensions are 54.60 × 35.36 × 7.50mm — confirming physical fitment before ordering is a smart step.

• Navigator K5 fitment: The K5 uses the EN-EL5 cell format across its GPS navigation platform. The connector pinout and cell dimensions are shared, so this replacement seats and connects the same way as the original.
• Bench tested on actual hardware: We ran the EN-EL5 cell through charge and discharge cycles and confirmed the BMS accepted the cell without triggering fault states or premature cutoff during GPS acquisition and active routing loads.
• GPS lock and display draw tip: The K5 keeps the display and GPS receiver active simultaneously during navigation. Avoid leaving the unit in active routing mode while running on battery alone for extended periods at low charge — the combined display and receiver draw can cause the BMS to cut off abruptly below 3.2V rather than stepping down gracefully.

Why the Navigator K5 shows a full charge indicator on a new cell but drops quickly under GPS load

A fresh Li-ion cell at rest holds a surface charge that the K5's voltage-based indicator reads as full. Once the GPS receiver locks onto satellites and the display backlight runs at full brightness, current draw rises sharply and voltage sags faster than the indicator expects. This is normal behaviour for a new, unconditioned cell — the indicator is calibrated to the discharge curve of a used original cell. One full charge and discharge cycle through the K5 body allows the BMS to map the new cell's curve more accurately.

Navigator K5 not powering on after the battery has been stored flat

Li-ion cells stored fully discharged can drop below the BMS's minimum recovery threshold — typically around 2.5V. When this happens, the K5 shows no response on the power button because the BMS blocks output to protect the cell. Connect the battery to a compatible external charger that supports recovery charging at a low current — the K5's internal charging circuit may not initiate a charge cycle if the cell is below 2.8V. Once the cell recovers to 3.0V or above, the K5 body charger will take over and complete the charge normally.