48V 20ah Samsung 50S eBike Battery - Bicycle Motor Works Premium 48V Collection Made in the USA | Certified Premium Cells | Built for Performance, Safety & Longevity Upgrade your eBike with American-made power you can trust. Each 48V pack in our Premium Battery Collection is custom-built in the U.S.A. using Genuine, Grade-A 21700 lithium-ion cells for exceptional performance, durability, and reliability in all weather conditions. Whether you’re replacing your old pack or upgrading your current setup, Bicycle Motor Works batteries are engineered for maximum power delivery, longer lifespan, and superior build quality. Key Features - Hand-built in the USA with Certified, Grade-A 21700 Cells - Replacement & Upgrade Options – Custom consultation available - Designed for high performance and long-distance riding - Optimized for heat dissipation and efficiency - 60A continuous / 100A max BMS with temperature protection - Solid Nickel and Copper connections – precision spot-welded - XT-90S (no-spark) discharge connector & XT-60 charge lead - 400–1000 charge cycles with consistent power output - Full customer support and service from our expert team SHOP & COMPARE MODELS! Cell Options Available Cell Type | Current Rating | Description Samsung 40T | Medium-High | Balanced power & efficiency Samsung 50S | Medium | Excellent energy density Molicel P42A | High | Ideal for performance riders Molicel P45B | Ultra High | Outstanding thermal stability Molicel P50B | Ultra High | Maximum output & reliability Specifications - Size: 11.5" × 3" × 4" - Configuration: 13s4p – 52 Genuine 21700 cells - Lifespan: 400–1000 cycles (depending on use and care) - Weight: Compact and lightweight design This 48V pack is engineered with a tight frame to enhance heat dissipation. Unlike bulky, air-filled designs, our compact structure prevents trapped heat — ensuring safer, more efficient performance. Each pack is tested, balanced, and protected by a smart BMS system that manages charging, discharging, and cell health automatically. Safety Notice Lithium-ion batteries must be handled and charged with care. Always use the proper charger, and never leave your battery charging unattended. Charge only in a fire-safe area (metal or enclosed containers are recommended). Do not open, modify, or expose your pack to moisture. If damaged or wet, contact your local hazardous-waste facility for safe disposal. Before purchasing, please read and agree to our full [Terms & Conditions] and Resource Center safety materials. Experience premium performance, safety, and American craftsmanship — only from Bicycle Motor Works.