Refined Footprint. Maximum Performance. Introducing the 52V Trim Line 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 Trim Line 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 P45B 13.5ah - 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 Trim Line 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 Trim Line? - 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.