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