52v 15ah Samsung 50S Bluetooth BMS Li-ion eBike Battery
52v 15ah Samsung 50S | Bicycle Motor Works - “100 Balance” Bluetooth BMS eBike Battery Collection
Made in the USA | Smart Active Balance BMS | High-Performance, Long-Range Power
- Experience next-level performance with the Bicycle Motor Works Premium Bluetooth eBike Battery Collection, exclusively built with brand 100 Balance – Active Balance BMS technology.
- After extensive testing and proven results, we’re proud to introduce these advanced Bluetooth-enabled BMS batteries — giving riders real-time access to their pack’s voltage, current, temperature, and state of charge directly from their smartphone via Bluetooth.
- With Active Balance technology, your cells remain fully balanced without needing to charge to 100%, extending battery life and improving long-term performance.
- Built for serious riders and custom eBike builders, these packs combine premium 21700 cells, solid copper/nickel construction, and smart safety engineering — all designed, assembled, and tested in the U.S.A. since 2014.
⚡ Key Features
Exclusive “100 Balance” Active Balance BMS – Bluetooth-enabled for remote monitoring
Smartphone Connectivity – Track voltage, current, temperature, and charge in real time
Active Cell Balancing – Extends lifespan; no need to charge to 100%
80A Long-Range BMS – Supports medium to high current applications
Hand-built in the U.S.A. using Grade-A certified 21700 cells
Compact, rugged construction – double-shrink wrapped, thick rubber outer layer
Bluetooth App Monitoring (compatible with most Android/iOS devices)
Perfect for: BBSHD Ludicrous, ASI BAC, and high-power eBike setups
15ah Samsung 50S - Bluetooth BMS
- High Current 14S 3P pack with Samsung 21700 50S cells
- 15 amp hours, Samsung's Super 50S Cells - long range.
⚙️ Technical Highlights
Continuous Output: 80A | Max Output: 120A
Connectors: XT-90S (no-spark) discharge / XT-60 charge lead
Wire Gauge: 10AWG silicone for high current handling
Weight: ~7 lbs
52V Dimensions: 12.25” x 3.2” x 4.25”
Cycle Life: 400–1000 full charges
Cell Testing: Each cell and series tested before assembly
BMS Safety Features: Overcharge, over-discharge, and thermal protection
The compact frame design enhances heat dissipation, reducing insulation effects and ensuring cooler operation. Each battery is built with solid nickel and copper bus bars, precision spot-welded for maximum conductivity and durability.
⚠️ Safety Notice
Lithium-ion batteries are powerful energy systems and must be used with care.
Only charge this battery with the proper lithium-ion charger and follow all safety precautions.
Do Not:
Modify wiring, housing, or connectors
Short-circuit or expose to moisture
Charge unattended or near flammable materials
If damaged or wet, do not use. Contact your local hazardous waste disposal facility for proper disposal.
📦 Shipping & Support
All eBike batteries are built to order and shipped in the order received
Typical lead time: 6-10 business days
Tracking information provided once shipped
Expert support available for configuration, installation, and product verification
🏆 Why Choose Bicycle Motor Works
Over 10 years of U.S.-based eBike battery innovation
Premium certified cells from Samsung and Molicel
Custom consulting for upgrades, replacements, and unique builds
Proven safety, reliability, and customer support
Ride smarter with Bluetooth-enabled, actively balanced battery technology — built for power, performance, and peace of mind.
Bicycle Motor Works: American Craftsmanship. Intelligent Energy.
Our policies must be read, understood and agreed upon before making a purchase, which include eBike Battery 101, Privacy Policy, Store Policies and Terms of Use. All of these materials and access to our manuals are available on our website, under Resource Center.


