48V 20Ah Triangle Lithium-ion E-Bike Battery Pack This 48V 20Ah triangle lithium-ion battery pack (960Wh nominal energy) is engineered for custom electric bike conversions, mid-drive setups, and hub motor builds. Assembled in a 13S4P matrix using 52 original Grade-A Samsung INR21700-50G cylindrical cells, this pack provides high discharge efficiency, minimal voltage sag under load, and over 800 charge-discharge cycles. Cell Matrix & Construction The battery utilizes authentic Samsung 21700 50G cells spot-welded with pure nickel strips. The outer assembly is wrapped in high-temperature industrial PVC shrink film with internal epoxy fiberglass insulation and vibration-damping cushioning. Measuring 225 mm in length, 150 mm in height, 75 mm in thickness, with a 200 mm hypotenuse slope (8.86 x 5.91 x 2.95 inches, 7.87-inch slope), the compact triangle form factor fits standard bicycle front-triangle frame spaces, weighing approximately 4.0 kg (8.82 lbs). Smart JBD Bluetooth BMS Hardware & Controller Matching Equipped with an integrated JBD Smart hardware Battery Management System featuring real-time Bluetooth telemetry. Users can monitor individual cell group voltages, internal thermistor temperatures, state of charge (SOC), cycle count, and remotely toggle charge and discharge states via the Xiaoxiang App on iOS and Android. 30A Continuous BMS: Supports 30A continuous current and 90A peak discharge for 250W, 500W, 750W, and 1000W electric bicycle motors. 40A Continuous BMS: Supports 40A continuous current and 120A peak discharge for 1000W, 1200W, and 1500W high-torque e-bike motors. Estimated range delivers 35 to 45 miles in throttle-only cruising and 65 to 80 miles under pedal-assist systems (PAS), depending on rider weight, terrain slope, and motor controller amperage. Charging System & Heavy-Duty Wiring The pack includes a dedicated 54.6V 5A CC/CV smart fast charger with an aluminum alloy heat-sink body and active cooling fan, delivering a full charge from 0% in approximately 4 hours. Status indicator LED displays red during charging and switches to solid green upon automatic cutoff. Discharge leads feature high-strand 10AWG flexible silicone wiring terminated with factory-crimped high-current connectors including XT60, XT90-S anti-spark, Anderson, and QS8 options. Technical Specifications Summary Nominal Voltage: 48V (Operating Voltage: 39.0V - 54.6V) Rated Capacity: 20Ah / 960Wh Configuration: 13S4P (52 x Samsung INR21700-50G) Protection Suite: Overcharge, over-discharge, over-current, short-circuit, high/low thermal cutoff Discharge Temperature: -20°C to 60°C (-4°F to 140°F) Charge Temperature: 0°C to 45°C (32°F to 113°F) Warranty: 2-Year Warranty coverage
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