SIGMA BL-5C Battery 1250mAh – 3.7V Rechargeable Li-ion Mobile Battery

The SIGMA BL-5C Battery is a rechargeable lithium-ion replacement battery designed for mobile phones that support the BL-5C battery format. Many traditional keypad phones use removable batteries, allowing users to replace a compatible battery without replacing the entire mobile phone.

Available at Traderz Global, this SIGMA-labelled battery features an advertised 1250mAh capacity, a 3.7V voltage rating and a compact rectangular design.

The product image shows the battery alongside a classic Nokia keypad phone. Additional illustrations demonstrate the battery’s appearance and placement inside a removable-battery phone compartment.

For users searching for a replacement battery for an older mobile phone, the SIGMA BL-5C Battery is an option to consider after verifying the exact battery model and electrical compatibility.

Key Features of SIGMA BL-5C Battery

1. BL-5C Replacement Battery Format

One of the main features of this battery is its BL-5C model designation.

BL-5C is a battery format associated with various older mobile phone designs, including certain Nokia devices.

The SIGMA BL-5C Battery is presented as a replacement option for devices that use the corresponding battery specification.

However, matching a model designation alone does not guarantee that every device will accept a particular replacement battery.

Before purchasing, customers should check their existing battery, device manual and physical connector arrangement.

2. Advertised 1250mAh Battery Capacity

The battery label displays a capacity of 1250mAh.

The term mAh stands for milliampere-hours and is commonly used to describe the electrical charge capacity of rechargeable batteries.

Battery capacity is one factor that influences how long a mobile device can operate between charges.

Actual usage time also depends on the phone’s power consumption, battery condition, network activity and operating environment.

The 1250mAh specification is taken from the visible product label and has not been independently verified through capacity testing.

3. Rated 3.7V Voltage

The SIGMA BL-5C Battery carries a 3.7V marking.

Voltage is an essential electrical specification when selecting a replacement battery.

Using a battery with an incompatible voltage or incorrect electrical characteristics may damage a device or create a safety hazard.

Customers should compare the replacement battery rating with the specifications required by their phone.

The visible voltage marking should not be considered sufficient proof of compatibility without checking other important factors, including battery dimensions and terminal placement.

4. Rechargeable Lithium-Ion Battery

The product label identifies the battery as a lithium-ion, or Li-ion, battery.

Lithium-ion batteries are commonly used in portable electronic devices because they can store electrical energy in a rechargeable format.

A compatible rechargeable battery can be charged through a device or charging system designed for its particular battery specifications.

However, rechargeable batteries require correct handling, charging and storage.

Never use an incompatible charger or attempt to charge a loose battery using unverified electrical connections.

5. Compact Rectangular Design

The SIGMA BL-5C Battery has a flat, rectangular body with visible electrical contact points.

Its white front label displays the brand name, model number, battery type and capacity information.

Red and black colour sections appear along the lower part of the battery.

The compact design is consistent with the removable battery format illustrated in the promotional image.

Exact physical dimensions and weight have not been provided.

Customers should verify the shape and contact arrangement against their original battery.

6. Visible Polarity Markings

The upper area of the battery label includes positive and negative symbols.

These markings are important indicators of electrical polarity.

Correct battery installation depends on the corresponding arrangement of the phone’s battery compartment and electrical terminals.

Users should never attempt to reverse a battery, modify the terminals or force an incompatible battery into a device.

Always follow the instructions supplied with the mobile phone.

Key Benefits of a Compatible BL-5C Replacement Battery

Replacement for an Existing Battery

For a phone that requires the BL-5C format, a compatible replacement battery may provide an alternative when the previous battery can no longer operate satisfactorily.

Rechargeable Operation

The Li-ion battery format is intended for repeated charging using a compatible charging system.

Model Identification

The BL-5C marking helps customers compare the replacement product with their existing battery model.

Clear Labelled Specifications

The visible 3.7V and 1250mAh markings provide electrical information that customers can use during compatibility checks.

Compact Removable Format

The illustrated design is intended for use with compatible mobile phones featuring removable battery compartments.

Useful for Older Mobile Phones

Replacement batteries can be relevant for people who continue to use traditional keypad phones for calls, messages and everyday communication.

How to Install SIGMA BL-5C Battery

Correct installation is important for both device operation and battery safety.

Step 1: Check Compatibility

Confirm that your mobile phone supports the BL-5C battery specification.

Compare the new battery’s dimensions, model designation and contact placement with the original battery.

Step 2: Switch Off the Phone

Turn off the mobile phone completely before removing the existing battery.

Step 3: Open the Battery Compartment

Remove the rear cover according to the phone manufacturer’s instructions.

Step 4: Remove the Old Battery

Carefully take out the existing battery without using sharp metal tools or excessive force.

Step 5: Inspect the Compartment

Check for damaged contacts, moisture, corrosion or other visible problems.

Step 6: Insert the Replacement Battery

Install the compatible SIGMA BL-5C Battery according to the device’s correct orientation and polarity requirements.

Step 7: Close the Phone

Replace the battery cover securely.

Step 8: Charge Safely

Use the phone’s approved charging equipment and follow the manufacturer’s charging instructions.

Stop using the battery if it becomes excessively hot, swollen or otherwise damaged.

SIGMA BL-5C Battery for Classic Nokia Phones

The promotional image features a classic Nokia keypad-style mobile phone.

Various older Nokia phones used removable batteries, making battery model identification an important part of replacement selection.

The SIGMA BL-5C Battery may be relevant for customers searching for compatible replacement batteries for certain Nokia phones.

However, not all Nokia phones use BL-5C batteries.

Even devices with similar appearances can have different battery requirements.

The label in the promotional image includes references to several older phone models, but exact compatibility should be confirmed against the user’s original battery and device documentation.

The appearance of a Nokia phone in the image does not establish that this is a Nokia-manufactured or officially licensed battery.

Understanding Mobile Battery Capacity

Battery capacity is an important specification, but it is not the only factor affecting mobile phone battery life.

A battery’s usable performance depends on several conditions, including its actual capacity, manufacturing quality, age, charging habits and operating temperature.

For example, a phone with higher power consumption may use stored battery energy faster than a device with simpler functions.

Battery performance can also change gradually as rechargeable cells age.

Although the SIGMA BL-5C Battery is labelled 1250mAh, no independently verified talk-time, standby-time or battery cycle-life figures have been provided.

Customers should avoid assuming guaranteed operating hours based only on the advertised capacity.

Important Battery Safety Precautions

Rechargeable lithium-ion batteries require responsible handling.

Damaged, swollen or improperly charged batteries can present fire and overheating risks.

Never puncture, crush, disassemble or short-circuit a battery.

Keep exposed battery contacts away from loose metal objects such as keys and coins.

Use only compatible charging equipment and avoid placing the battery near excessive heat or open flames.

If the battery shows swelling, leakage, unusual odour or overheating, discontinue use and follow appropriate battery safety guidance.

Do not attempt to repair damaged lithium-ion cells.

Battery Storage and Maintenance

When storing a replacement mobile battery, choose a cool, dry environment away from direct sunlight.

Avoid allowing loose metal objects to contact the battery terminals.

Do not store batteries where they may be crushed or physically damaged.

For extended storage, follow the battery manufacturer’s recommended charge level and maintenance instructions.

Keep the battery away from children and pets.

Regularly inspect the battery for signs of damage before installation.

Environmental Disposal Information

The SIGMA BL-5C Battery packaging includes battery disposal and recycling information.

Used lithium-ion batteries should not be discarded with ordinary household waste where separate collection is required.

Instead, follow local regulations and use an appropriate battery recycling or collection facility.

Protect exposed terminals as required by the collection facility’s instructions.

Responsible battery disposal helps reduce the risks associated with damaged or improperly discarded rechargeable cells.

Frequently Asked Questions

What is SIGMA BL-5C Battery?

The SIGMA BL-5C Battery is a rechargeable lithium-ion replacement battery labelled for the BL-5C battery format.

What is the capacity of this battery?

The product label advertises a capacity of 1250mAh.

What is the rated voltage?

The visible label states 3.7V.

Is this an original Nokia battery?

The product is labelled SIGMA. It has not been verified as an original Nokia-manufactured battery.

Can I use it in Nokia 3100, 6680 or N70?

These models are referenced in the promotional label, but compatibility should be confirmed against the phone’s required battery specification before use.

Does it support rechargeable operation?

Yes. The product is labelled as a lithium-ion rechargeable battery.

How long does the battery last?

Actual operating time depends on the phone, usage conditions and battery performance. No verified talk-time or standby-time rating has been supplied.

Can I charge it using a normal phone charger?

Only use charging equipment appropriate for the compatible phone and battery specifications.

Is the battery safe to use if it becomes swollen?

No. Stop using swollen or physically damaged lithium-ion batteries.

How should I dispose of an old battery?

Use an appropriate battery collection or recycling facility in accordance with local regulations.

Shop SIGMA BL-5C Battery at Traderz Global

Looking for a replacement battery for a compatible older mobile phone?

Explore the SIGMA BL-5C Battery 1250mAh – 3.7V Rechargeable Li-ion Mobile Battery at Traderz Global.

Featuring a clearly labelled BL-5C model, advertised 1250mAh capacity and 3.7V voltage rating, this battery is an option for customers searching for compatible removable mobile batteries.

Before purchasing, compare the battery specifications and physical contact arrangement with your existing battery.

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