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    BU-15 Replacement Battery for Sumitomo T-400S / T400S OTDR Fusion Splicer - 10.8V 35.64Wh (3300mAh) Li-ion

    • Power Extended Fiber Splicing Sessions with OEM-Spec Performance
    • Keep your critical fiber optic network construction and repair work on schedule. This BU-15 replacement battery is engineered specifically for the Sumitomo T-400S / T400S Optical Time Domain Reflectometer (OTDR) and fusion splicer. Providing reliable 10.8V power with a 3300mAh (35.64Wh) capacity, this Li-ion pack ensures your splicer has the endurance needed for full-day splicing and testing in the field.
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    This is a 100% brand new, compatible battery built to meet original Sumitomo specifications. It is backed by a 1-year warranty, offering a reliable and cost-effective alternative to extend your equipment's productivity.

    DIRECT COMPATIBILITY FOR SUMITOMO SPLICER
    This is a direct, drop-in replacement designed for your professional fiber splicing equipment. Please verify your device model before ordering.

    Compatible Device: Sumitomo Electric T-400S / T400S Fusion Splicer & OTDR.

    Replaces Sumitomo Part Number: BU-15

    Voltage: 10.8V

    Capacity: 3300mAh

    Energy: 35.64 Watt-hours (Wh)

    Chemistry: Lithium-Ion (Li-ion)

    Condition: 100% Brand New, High-Quality Cells

    Warranty: 1 Year

    WHY A RELIABLE BATTERY IS CRITICAL FOR FUSION SPLICING

    Uninterrupted Workflow: Provides sufficient power to complete splicing projects, ribbon splicing, or long OTDR trace analysis without stopping to charge.

    Stable Splicing Arc: A stable voltage supply is crucial for the splicer's electric arc system to create consistent, low-loss fusion splices.

    Field Productivity: Essential for technicians working at remote cell towers, data centers, or along fiber routes where AC power is unavailable.

    Protects Equipment Value: A simple battery refresh is the most economical maintenance to preserve the functionality and resale value of your high-precision splicer.

    SAFETY, CHARGING & FIELD OPERATION NOTES

    For Professional Technicians: Intended for use by certified fiber optic splicers, network installers, and field engineers.

    Use Sumitomo Approved Charger Only: Must be charged using the official Sumitomo T-400S charger or docking station. The splicer's intelligent charging system is calibrated for this specific battery. Using an incorrect charger is unsafe.

    Follow Manufacturer Guidelines: Adhere to all battery handling, storage temperature, and operational instructions in your Sumitomo T-400S User Manual.

    Transport & Disposal: The 35.64W h capacity is well within standard limits for air travel with carry-on luggage (always verify current airline rules). Recycle at a certified e-waste facility.

    PACKAGE INCLUDES

    1 x BU-15 Compatible Replacement Battery ( 10.8V, 35.64W h) for Sumitomo T-400S/T400S

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    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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