High Quality 12.6V(Compatible 13.2V) 7800mAh SUMITOMO BU-66L Battery For Sumitomo TYPE-39/TYPE-66 Fiber Fusion Splicer

Do you want to buy a cheap SUMITOMO BU-66L Compatible battery? We offer you a cheap SUMITOMO BU-66L Compatible battery - an incredibly high quality Compatible battery! All SUMITOMO BU-66L are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test!

✔ Battery for BU-66L Ships to Singapore

Product Overview

This battery is suitable as a replacement battery for Sumitomo TYPE-39/TYPE-66 Fiber Fusion Splicer battery and SUMITOMO BU-66L model.

High capacity SUMITOMO BU-66L battery for longer standby time.

The battery is professionally tested to ensure the best lifespan.

1 year warranty, 30 days money back, 100% brand new!

Battery capacity (mAh/A/W) may be different; the more mAh/A/W it displays, the higher its autonomy.

Safety certified CE / FCC / RoHS.

Key Features

• High‑capacity design with 7800mAh for extended device runtime.
• Stable 12.6V(Compatible 13.2V) output ensures consistent performance during daily use.
• Built with high‑quality lithium‑ion cells for improved durability and long cycle life.
• Advanced protection system including overcharge, over‑discharge, overheat, and short‑circuit safeguards.
• Optimized for reliable performance in warm and humid environments.
• Lightweight and compact design for easy installation and device compatibility.

Technical Specifications

Model	BU-66L
Battery Condition	Brand New Replacement Battery
Item Code	SUM21AP1137_Oth
Category	Lithium Batteries
Brand	SUMITOMO
Capacity	7800mAh
Voltage	12.6V(Compatible 13.2V)
Type	Lithium
Color	Black
Applies to	Sumitomo TYPE-39/TYPE-66 Fiber Fusion Splicer
Certification	Passed CE, UL, ROHS, ISO 9001/9002 and GS certification
Service	Buy now, we promise a one-year warranty and 30-day returns

Compatible Models

Replacement Part Numbers:

• BU-66L
• BU-66S

Compatible Models：

BU-66L BU-66S Battery for Sumitomo TYPE-39/TYPE-66 Fiber Fusion Splicer +Charger
Battery type: Lithium
Voltage: 12.6V(Compatible 13.2V)
Capacity: 7800mAh
Condition: 100% Brand new & High quality
Color: Black
Compatible with battery models: BU-66L BU-66S
Compatible Models:
For Sumitomo TYPE-39/TYPE-66 Fiber Fusion Splicer
Package includes:
1 X BU-66 battery
1 X AC Adapter(With US/UK/EU plug)

* Please make sure that the replacement battery you are buying is suitable for your device brand and model.

Battery Care & Maintenance

• Store the battery in a cool, dry environment to maintain long‑term performance.
• Avoid exposing the battery to excessive heat or direct sunlight, especially in warm and humid climates.
• Use compatible SUMITOMO chargers or certified charging accessories to ensure safe and efficient charging.
• Avoid frequent full discharges; partial charge cycles help extend overall battery lifespan.
• If the battery will not be used for an extended period, keep it at around 40–60% charge before storage.
• Clean the battery contacts periodically with a dry cloth to maintain stable power delivery.
• Do not puncture, crush, or expose the battery to water or high humidity.

Frequently Asked Questions