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Nokia 105 4G BL-5C Replacement Battery 3.7V 1200mAh Li-ion

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Replaces Nokia BL-5C and BL-5CA batteries for Nokia 105 4G (2023), 105 (2023), 1100, 1101, and 86 additional models.
This 3.7V lithium-ion cell delivers 1200mAh capacity—enough to power calling, messaging, and basic features on the Nokia 105 4G throughout a standard day.
Connector slides into the original battery slot with a positive tab alignment; no adapter needed and no locking mechanism to override.
We bench-tested this cell on the Nokia platform and confirmed the fuel gauge IC accepted the new discharge curve without early cutoff errors on first cycle.
On first use after installation, run one complete discharge-charge cycle without interruption—this recalibrates the phone's fuel gauge against the new cell voltage curve.
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

1200mAh

Nokia 105 4G (2023) — 3.7V Li-ion Replacement Battery (BL-5C / BL-5CA)

This 3.7V, 1200mAh Li-ion cell replaces the Nokia BL-5C and BL-5CA batteries across the Nokia 105 4G (2023), 105 (2023), 1100, 1101, and over 86 additional Nokia models. It fits the original battery slot without modification and restores calling, messaging, and basic feature operation. Capacity is 4.44Wh — matched to the OEM specification for these devices.

  • BL-5C platform compatibility: Nokia used the BL-5C footprint across a wide range of feature phones sharing the same 3.7V rail, connector pitch, and BMS communication protocol. That consistency is why one cell covers so many models — the electrical interface is identical across the range.
  • Bench tested on actual hardware: We cycled this cell through charge and discharge on a Nokia 105 4G (2023) test unit. The BMS accepted the cell without error, charge termination triggered correctly at 4.2V, and the protection circuit tripped at the expected low-voltage threshold.
  • Fuel gauge recalibration on first use: After fitting the new cell, run one full discharge down to automatic shutdown, then charge uninterrupted to 100% before using the phone normally. The Nokia fuel gauge IC was calibrated to the old cell's discharge curve — one complete cycle resets it to the new cell so percentage readings are accurate.

Why the Nokia 105 4G shuts down suddenly at 20–30% battery remaining

This is a voltage cliff failure, not a capacity problem. As a Li-ion cell ages, its internal resistance rises. Under the load of an active call or 4G data session, the terminal voltage drops sharply even when the state-of-charge reading still shows charge remaining. The BMS trips the cutoff to protect the cell before the fuel gauge catches up to the real state. A fresh cell with lower internal resistance eliminates the voltage sag, and one full recalibration cycle after fitting will align the percentage readout with actual capacity.

Phone not powering on after the replacement cell sat in storage

Li-ion cells self-discharge during storage. If this cell dropped below approximately 2.5V per cell before installation, the BMS may have entered lockout mode and will refuse to pass current to the phone. Connect the phone to a wall charger — not a PC USB port — and leave it for 15–20 minutes without attempting to power on. Most Nokia BMS circuits will begin a trickle pre-charge at around 50mA to bring the cell voltage back above the lockout threshold before enabling full charge current. If the charging indicator does not appear within 30 minutes, try a different charger capable of at least 5V 1A output.

Compatible Models

105 4G (2023) 105 (2023) 1100 1101 1110 1110i 1112 1200 1208 1255 1280 1315 1600 1650 2112 2118 2255 2270 2280 2285 2300 2310 2355 2600 2600 classic 2610 2626 2700 classic 2730 classic 3100 3105 3109 Classic 3110 3110 classic 3110 evolve 3120 3125 3600 3620 3650 3660 6030 6085 6086 6108 6175i 6230i 6265 6265i 6268 6270 6282 6555 6600 6630 6670 6680 6681 6682 6820 6820i 6822 7600 7610 Asha 230 DualSim C1 C1-00 C1-01 C1-02 C2 C2-01 C2-02 C2-03 C2-06 C2-07 E50 E60 LD-3W N70 N71 N72 N91 N91 8GB N-Gage 2600 N-Gage 3120 N-Gage 6630 RM-986 TA-1034 X2-01 X2-05

Replaces Part Numbers

BL-5C BL-5CA

Technical Specifications

Voltage3.7V
Amp Hours1200mAh
Capacity1200mAh
Rate4.44Wh
Net Weight23g /0.81 oz
Gross Weight48g /1.69 oz
Approximate Weight48g /1.69 oz
Dimension 53.00 x 33.90 x 5.70mm

Product Highlights

  • Brand: Nokia
  • Manufacturer: CS
  • Series: X-Longer
  • Color: Black
  • Product Type: Li-ion
  • Battery Type: Li-ion
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

Why does my Nokia 105 4G show the wrong battery percentage after fitting the new cell?

The fuel gauge IC inside the phone was calibrated to the discharge curve of the old, degraded cell. When a new cell goes in, the stored calibration data no longer matches the actual cell chemistry, so the percentage readout drifts — often jumping or stopping at an unexpected level. Run one complete discharge to automatic shutdown, then charge uninterrupted to 100%. That single cycle gives the coulomb counter enough data to remap its calibration to the new cell. After that, percentage readings stabilise.

The phone feels warm near the battery while charging the new cell — is that normal?

A new high-impedance cell generates slightly more heat than a broken-in one during the constant-current charge phase. The charge IC pushes current into a cell that hasn't yet settled to its steady-state internal resistance, which produces more heat than you'd see after a few cycles. As long as the phone is warm — not hot to the touch — and the warmth fades once charging completes, this is within normal range. If it stays hot after the charge indicator clears, check that the charger output is 5V and not exceeding 1A for this device.

My Nokia 105 (2023) won't fast charge after I swapped the battery — what's happening?

On the first cycle after a cell swap, some Nokia charge controllers hold the charge rate conservative until the BMS on the new cell has completed one full handshake sequence. The phone may charge at a reduced current rate initially — this is the charge IC being cautious with an uncalibrated cell. Complete one full discharge and charge cycle at standard rate before expecting full charge speed to restore. If reduced charge speed persists beyond two full cycles, confirm the charger output matches Nokia's specified input — 5V 1A for this model.

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