BL-6F Nokia N95 Replacement Battery 3.7V 2000mAh

Nokia N95 / 8GB — 3.7V Li-ion Replacement Battery (BL-6F)

This is a 3.7V, 2000mAh Li-ion cell built to the BL-6F specification. It fits the Nokia N95 and N95 8GB smartphones. Voltage and connector match the original, so the existing charge IC and fuel gauge IC work without modification.

• N95 and N95 8GB compatibility: Both handsets share the same battery bay geometry, contact layout, and 3.7V single-cell rail. The BL-6F connector seats identically in each, and the BMS handshake with Nokia's charge IC is consistent across both models.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the N95 platform. The BMS held the charge termination voltage correctly, and the fuel gauge IC tracked state-of-charge without triggering a false low-battery shutdown during the test cycle.
• Fuel gauge recalibration on first use: On first installation, run the battery from 100% down to automatic shutoff without interruption, then charge uninterrupted to full. The N95's fuel gauge IC maps its coulomb counter to the new cell's discharge curve during this cycle — skipping it leaves the percentage readout inaccurate for the first week of use.

Why the N95 shuts down suddenly at 20–30% after a cell replacement

The N95's fuel gauge IC retains the discharge curve of the old, degraded cell in its coulomb counter. When the replacement cell hits a voltage point the IC associates with imminent cutoff — around 3.5V under load — it triggers a shutdown even though usable charge remains. The GPS radio and 5MP camera shutter draw brief high-current spikes that accelerate this voltage sag. One full uninterrupted discharge-charge cycle forces the IC to relearn the new cell's actual voltage-versus-capacity profile and eliminates the false cutoff.

Phone shows incorrect battery percentage jumping erratically

Erratic percentage jumps after a cell swap mean the fuel gauge IC is still interpolating state-of-charge against its previous calibration data. The old cell's internal resistance was higher, so the IC's voltage-to-capacity lookup no longer matches what the new cell delivers. This appears as sudden jumps of 10–15% in either direction, particularly when the screen backlight or modem wakes from standby. Complete two full discharge-charge cycles without partial top-ups, and the readout will stabilise — check that the percentage moves smoothly from 100% down to the low-battery warning at approximately 3.4V.