36V 40Ah Metal Case eBike Battery | Samsung 50G · JBD Smart BMS

36V 40Ah Metal Case E-Bike Lithium Battery Pack Overview Quick Summary: Heavy-duty 36V 40Ah (1,440Wh) lithium-ion battery pack built with 80 original Samsung 21700 50G cells in a 10S8P configuration, featuring an integrated digital top display, a Smart JBD Bluetooth BMS (30A/50A), and a rugged sheet-metal enclosure designed for 250W to 1500W electric bikes, cargo rigs, and DIY conversion kits. Core Specs: 36V Nominal | 40Ah Capacity (1,440Wh) | 10S8P Original Samsung INR21700-50G Cells System Rating: 30A Continuous (90A Peak) or 50A Continuous (150A Peak) Smart JBD BMS Compatibility: Suitable for 250W, 500W, 750W, 1000W, and up to 1500W 36V motors Charging: Includes 42V 5A CC/CV fan-cooled metal smart charger, full charge in approximately 8–9 hours Key Hardware & Performance Features Authentic Samsung INR21700-50G Tier-1 Cells Engineered using 80 genuine Grade-A Samsung 21700 50G high-energy-density cells in a 10S8P array. The parallel layout distributes discharge current down to 3.75A–6.25A per cell, delivering minimal voltage sag under heavy load, high thermal stability, and extended cycle life over 800 charge cycles. Smart JBD Bluetooth BMS with Real-Time Telemetry Integrated Jiabaida (JBD) intelligent battery management system pairs wirelessly with iOS and Android devices via the Xiaoxiang app. Riders can monitor individual cell voltages across all 10 series strings, track pack temperature, verify live amperage draw, and remotely toggle charging and discharging ports. Armored Sheet Metal Case with Digital Top Screen Rigid stamped steel enclosure features internal EVA shock-absorbing foam and comprehensive waterproof potting to resist vibrations, dust, and road spray. The integrated top LCD shows real-time pack voltage, remaining battery percentage, internal operating temperature, and charge status. Technical Specifications Nominal Voltage: 36V Rated Capacity: 40Ah (1,440Wh) Cell Model: Samsung INR21700-50G (5,000mAh per cell) Cell Configuration: 10S8P (80 Cells Total) Working Voltage Range: 30.0V (Cut-off) – 42.0V (Full Charge) Continuous / Peak Current: 30A / 90A (1000W BMS) or 50A / 150A (1500W BMS) Charging Current & Time: 42V 5A CC/CV | Approx. 8–9 Hours Dimensions (L × W × H): 300 × 190 × 90 mm (11.8 × 7.5 × 3.5 in) Pack Weight: Approx. 8.0 kg (17.6 lbs) Enclosure Material: Coated Sheet Metal with Waterproof Sealant Operating Temperature: Discharge: -20°C to 60°C | Charge: 0°C to 45°C Warranty Coverage: 2-Year Limited Manufacturer Warranty Package Contents (What You Will Get) 1 × 36V 40Ah Metal Case Lithium-Ion Battery Pack (Samsung 21700 50G, Built-in Smart JBD BMS) 1 × 42V 5A Smart Fast Charger (Aluminum Shell, Active Fan, Dual Safety Fuses) 1 × AC Power Cable (US or EU Grounded Plug based on shipping address) 1 × Heavy-Duty 10AWG Discharge Lead with Pre-Soldered Connectors (XT60 / XT90 / Anderson) 1 × Fireproof Battery Safety Storage Bag Frequently Asked Questions (FAQ) Q: What motors or conversion kits work with this battery? A: This battery is engineered for all 36V nominal electric bike systems. The 30A BMS configuration supports mid-drive and hub motors up to 1000W (such as Bafang BBS02 36V 500W/750W, Voilamart, and Voilamart 36V kits). The 50A BMS option accommodates high-performance controllers up to 1500W for cargo hauling and steep hill climbing. Q: How long does a full recharge cycle take? A: A full recharge from near empty (30.0V) to full (42.0V) takes approximately 8 to 9 hours using the included 42V 5A smart charger. The 5A charging rate provides fast replenishment while maintaining gentle charge current per cell (~0.62A per parallel branch) to prevent heat stress and maximize longevity. Q: What estimated range will this pack provide per charge? A: Delivering 1,440Wh of total energy, riders can expect approximately 70 to 100+ miles (110 to 160+ km) with moderate pedal assist on 500W–1000W setups, and 50 to 80+ miles (80 to 130+ km) during mixed throttle riding on high-power motors. Actual mileage varies based on payload, cruising speed, tire pressure, and incline.