The smallest 72V eBike battery on the market —a Bicycle Motor Works exclusive, proudly built in the U.S.A. with over 10 years of trusted performance. Compact, lightweight, and packed with premium power, this battery is the perfect match for CYC Photon Gen 2 motors. Featuring New Upgrade Option: Active 100 Balance Bluetooth BMS Technology Monitor your eBike battery directly from your smartphone with the free 100 Balance app. View real-time metrics such as: - Voltage - Current Temperature - State of charge (SOC) Active balance technology keeps your battery cells evenly balanced — even if not charged to 100%. This extends battery life, optimizes performance, and ensures consistent power delivery under heavy load. Engineered for riders who want serious performance in a compact package, the Pocket Rocket is your ultimate plug-and-play power upgrade — delivering more speed, range, and torque for 48V systems. Why 72V? Higher voltage means you need less current (amps) to achieve the same power output. That translates to a more efficient system with less power loss to resistance (heat). The result: smoother performance and better overall efficiency. Built for Pedal-Assist Riders Constructed with Molicel P50B cells and a 45A BMS, the Juice Box is engineered for serious riders who value efficiency and pedal-assist performance. - Capable of safely pushing 3,000W+ bursts if needed - Not designed for heavy throttle-only riders—sustained high-power pulls will drain capacity quickly Key Specs - Weight: Just over 4 lbs. - Dimensions: 166mm x 80mm x 75mm (6.5” x 3.15” x 3”) Ultra-compact yet powerful, the 72V Juice Box is the go-to battery for riders who want high voltage performance in the smallest possible package. SHIPPING: All E-Bike Battery Packs are shipped in the order it is received. Please allow 5-10 days to ship. Tracking will be sent as soon as it ships. Contact us if you need assistance. This 52v pack is built with a tight frame for better heat dissipation. Having too much empty air space actually acts as an insulator - trapping the heat inside the pack (think double-pane windows). Connections are made with solid Nickel strips, spot welder to each cell. Each cell and each series is tested before assembly. The BMS will prevent over charging and will balance the cells after a full charge. It basically makes your battery as safe and as efficient as possible. WARNING: With all rechargeable batteries, please take great care when charging. Never, ever short out the battery in any way. Failure to safely use this battery can result in fire, explosions, destruction, loss of life, loss of marriage, bad burns and an upset stomach. - ONLY CHARGE THIS BATTERY IN A PLACE WHERE YOU WOULDN'T MIND STARTING A FIRE. NEVER LEAVE A CHARGING BATTERY HOME ALONE. Some people put their battery and charger in a BBQ grill with the lid on so that if anything bad happens it would be contained. There are also ammo-boxes and safe, metal boxes for charging battery packs. Basically, use your head. - Charge this pack ONLY with the appropriate lithium ion charger.If you aren't sure which charger you should use please contact us to verify. - Do not open or remove any part of this battery pack.Do not modify the pack in any way - including cutting wires, using connectors that are not compatible with the pack, hard-wiring the pack into a motor or controller, etc. ANY modification of this pack will void any and all warranty, either implied or expressed. - If this pack is damaged or gets wet, do not use it. Danger of fire or thermal runaway of cells can occur, and this can be a life threatening issue. Dispose of a damaged or wet pack immediately by contacting your local hazardous waste disposal office. SHIPPING INFORMATION: All E-Bike Battery Packs are shipped in the order it is received. Please allow 5-10 days to ship. Tracking will be sent as soon as it ships. Contact us if you need assistance.