⚡ 52V 18ah Molicel P45B SMART Bluetooth eBike Battery Collection – Active Balance Smart BMS Technology
Built by Bicycle Motor Works | U.S.-Made | Premium 21700 Cells | 80A Continuous Output
 
Introducing the next evolution of eBike battery technology — Bicycle Motor Works’ exclusive collection featuring the 100 Balance Active Bluetooth BMS.
After extensive in-house testing, we’re proud to offer these smart BMS systems that deliver real-time performance monitoring and active cell balancing for maximum efficiency and safety.
With the 100 Balance BMS, you can monitor your battery’s voltage, current, temperature, and state of charge directly from your smartphone within Bluetooth range.
The active balance feature automatically equalizes cell groups — even when not fully charged — ensuring optimal performance, longer lifespan, and consistent power delivery.
 
🔋 Key Features
Bluetooth Smart Monitoring – Track voltage, current, temperature & SOC in real time
Active Balance Technology – Balances cells without needing a full charge
80A Continuous / 120A Burst BMS – Designed for high-current performance
Multiple Premium Cell Options – Choose your power, range, and riding style
U.S.-Built and Tested – Designed, assembled, and quality-checked in Bethlehem, PA
Durable & Compact Design – Tough, double-shrink casing with rubberized protection
Plug-and-Play Ready – XT-90S output (no sparks) and XT-60 charge connectors
⚙️ Available Configurations (52V Bluetooth Series)
All packs built with 14S4P configuration and genuine 21700 cells.

Compare and Choose your perfect performance level:
🔹 16Ah Samsung 40T – Original High Current
Reliable, punchy performance with excellent thermal control.
🔹 16Ah Ampace JP40 – NEW Top-Tier, Highest Current
Next-gen lithium-ion technology for unmatched efficiency and cycle life.
🔹 16.8Ah Molicel P42A – Proven High Current Formula
Balanced power and runtime for all mid-drive systems.
🔹 18Ah Molicel P45B – Top-Tier, Super High Current
The gold standard for aggressive acceleration and sustained output.
🔹 20Ah Samsung 50S – Long Range, Medium Current
Extended ride distance with steady, reliable power delivery.
 
📐 Technical Specifications
Feature
Specification
Voltage
52V (14S configuration)
Capacity Options
16Ah – 20Ah
Cells
Genuine Samsung, Molicel, or Ampace 21700 cells
BMS Rating
80A continuous / 120A burst (temperature protected)
Dimensions
12.25” × 3.2” × 4.25”
Weight
Approx. 7 lbs
Casing
Thick, rigid outer shell + double shrink with rubber protection
Connectors
XT-90S output with spark resistor
Wiring
Heavy-duty 10AWG silicone leads
 
🚴 Performance Highlights
Handles 60+ amps all day without overheating
Perfect for CYC, BBSHD Ludicrous, and ASI BAC setups
Tight internal frame for superior heat dissipation
Solid nickel and copper busbars for low resistance and maximum conductivity
Smart BMS actively manages cell balancing for consistent performance
Reserve power available for future controller or motor upgrades
Your controller only draws the amps it needs — the rest stay in reserve for peak power when you demand it.
 
🧠 Engineered for Safety and Longevity
Each cell and connection is individually tested before assembly.
The advanced BMS safeguards against:
Overcharging / over-discharging
Short circuits and voltage imbalance
Excessive temperature rise under heavy load
Our copper-and-nickel hybrid busbar design minimizes heat and ensures smooth current flow for maximum power efficiency and extended battery life.
⚠️ Safety Notice
Lithium-ion batteries are powerful and require proper care.
Always use an approved lithium-ion charger and charge in a fire-safe area.
Do NOT:
Modify wiring or connectors
Use if wet or damaged
Leave charging unattended
Charge near flammable materials
Improper use may lead to damage or injury. Dispose of damaged packs responsibly at your local hazardous waste facility.
 
🚚 Shipping Information
All Bicycle Motor Works batteries are built to order and shipped in sequence.
Typical lead time: 5–10 business days
Tracking provided when shipped
U.S.-based support available for all inquiries
 
🏆 Why Choose Bicycle Motor Works
Proudly Built in the U.S.A. since 2014
Family-Owned, Rider-Focused Business
Only Genuine 21700 Cells – Samsung, Molicel, Ampace
Advanced Technology, Handcrafted Quality
Expert Support from real builders and eBike enthusiasts
 
Bicycle Motor Works – Premium Power, Smart Technology, Built Right Here.