Refined Footprint. Maximum Performance.
 
Introducing the 52V TrimLine Series — a purpose-built, reduced-footprint eBike battery engineered for riders who need high-current performance in a slimmer, more integrated enclosure.
Designed to fit tighter mounting systems, cargo cages, custom frames, and compact builds, the TrimLine removes unnecessary bulk while maintaining the power, durability, and cold-weather capability Bicycle Motor Works is known for.
 
Built in the USA using premium certified cells, pure copper busbars, and high-performance BMS configurations, this is a compact housing without compromise.
 
⚡ 52V Platform Specifications
Nominal Voltage: 52V (14S)
Compact Enclosure: 9.5” x 3” x 3.75”
Cell Brand: Molicel P50B 15ah 
High-Current BMS Options Available
Pure Copper Busbars
Professionally Assembled & Quality Tested in the USA
XT60 (or custom connector upon request)
Ideal for performance mid-drives & high-output controllers
Compatible with tight rack mounts & cage systems
 
*** Not sure about this model? We have a variety of other cell brand options available.
 
COMPARE OTHER CELL OPTIONS:
Each TrimLine battery is built to order with your choice of premium high-discharge cells:
 
12Ah Class (High Power / Lightweight Focus)
Ampace JP40 – 12Ah
EVE 40PL – 12Ah
Samsung 40T – 12Ah
Molicel P42A – 12.6Ah
Best for: Lightweight builds, high burst output, aggressive riding setups.
 
13.5Ah Class (Balanced Power & Range)
Samsung 45T – 13.5Ah
Molicel P45B – 13.5Ah
BAK 45D – 13.5Ah
Best for: Riders wanting strong continuous output with added range headroom.
 
15Ah Class (Extended Range / High Energy Density)
Ampace JP50 – 15Ah
EVE 50PL – 15Ah
LG 15Ah Platform
Molicel P50B – 15Ah
Samsung 50S – 15Ah
Best for: Longer rides, higher efficiency builds, winter-ready performance platforms.
 
Winter-Ready Performance Available
Many of these cell platforms (JP50, P50B, P45B, 50S, etc.) are part of our proven cold-weather capable lineup — engineered to reduce resistance and voltage sag during lower temperature riding.
If you ride year-round, ask us about the best winter-optimized configuration.
 
Why TrimLine?
Reduced footprint for compact mounting systems
Lower-profile housing for cleaner integration
High-current capability without oversized enclosures
Built for performance mid-drives (CYC, BBSHD, ASI, BAC setups)
U.S.-assembled with premium materials
This is not a “small battery.”
This is a precision-sized performance platform.

 
Built with Care. Tested for Excellence.
Every Bicycle Motor Works battery is hand-assembled, spot-welded, and tested for voltage, balance, and resistance.
 
Each unit includes:
Precision cell-matching and balancing
Solid nickel and copper connections for efficient current delivery
80A continuous BMS with integrated temperature protection
Smart balancing circuit for extended cell life and performance consistency
Our compact frame design improves heat transfer and safety by minimizing internal air gaps — ensuring every ride stays cool and reliable.
 
Not Sure Which Cell to Choose?
We’re battery specialists.
Tell us your motor, controller, riding style, and climate — and we’ll match you to the right cell chemistry and discharge profile.
 
⚠️ Safety Guidelines
Lithium-ion batteries are powerful devices and must be handled responsibly.
Please follow these precautions:
Use only the correct lithium-ion charger
Never short, puncture, or modify the pack
Do not charge unattended or near flammable materials
Avoid use if wet, swollen, or physically damaged
Charge in a fireproof or metal container
Read our eBike Battery 101 Guide for detailed safety and care tips
Improper use can result in injury or damage — if in doubt, consult a professional.
 
🚚 Shipping Information
Built to order and shipped in sequence
Typical lead time: 5–10 business days
Tracking provided upon shipment
Ships from Bethlehem, Pennsylvania
U.S.-based support available for all customers
 
🏆 Why Riders Choose Bicycle Motor Works
🇺🇸 Proudly Built in the USA since 2014
👨‍🔧 Family-Owned, Quality-Focused Craftsmanship
🔋 Premium Certified 21700 Cells Only – Never Rewrapped
⚙️ High-Performance Engineering for Real Riders
🧰 Trusted Nationwide by Builders & Enthusiasts
 
Bicycle Motor Works – Premium American-Made eBike Batteries. Engineered for Power. Built to Last.