SUYIJIA High-Power 72V 21700 Lithium-Ion Battery Series –

10Ah to 50Ah Capacity Options for Up to 3800W Motors (20S Smart BMS, XT90 Output & Matching 5A Fast Charger Included)

Supercharge your high-speed electric motorcycle, heavy-duty e-bike conversion, or utility trike with the SUYIJIA 72V 21700 High-Power Lithium Battery Pack. Assembled with premium high-density 3.7V 5000mAh 21700 cylindrical cells, this 72V system delivers exceptional discharge efficiency, reduced voltage sag under load, and extended service life compared to traditional lead-acid or standard 18650 packs.

Engineered to support peak power draws up to 3800W, each pack is governed by an integrated 20S 40A/50A Smart BMS with up to 100A peak discharge bursts. Complete with heavy-duty XT90 output connectors, a dedicated DC5.5x2.1mm charging port, and an included 84V 5A fast charger, this turnkey kit provides high-voltage performance for demanding builds.

⚠️ System Compatibility & Connector Guide

IMPORTANT VOLTAGE & CONNECTOR INFORMATION:

Nominal 72V (20S Configuration): Charges to 84V Maximum and operates down to a 55V Discharge Cutoff. Ensure your motor controller is rated for 72V nominal systems ( $55\text{V–}84\text{V}$ operating window).

Standard Discharge Connector: Pre-wired with heavy-duty XT90 connectors for high-current throughput (Default output plugs can be customized upon request).

Charging Port: Features a dedicated DC 5.5mm × 2.1mm charging port designed specifically for the included 84V 5A charger (Maximum charge current: $10\text{A}$ ).

🚀 Key High-Performance Features

High-Density 21700 Cell Technology: Built using $5000\text{mAh}$ 21700 cell matrices for maximum energy-to-weight ratio and cooler operation under high discharge rates.
3500W+ Peak Power Handling: Capable of feeding high-torque hub and mid-drive motors rated up to 3800W without triggering premature thermal cutoffs.
Integrated 20S Smart BMS: Provides comprehensive multi-point circuit protection against overcharging, deep discharge, over-current, and short circuits.
Included 5A Fast Charger: Shipped complete with an 84V 5A smart CC/CV charger to minimize downtime between rides.
Zero Memory Effect: Recharge at any state of charge without diminishing cell capacity over time.

📊 Technical Specifications Matrix

Specification Parameter	SUYIJIA 72V 21700 Battery Specifications
Brand Name	SUYIJIA
Cell Format / Chemistry	21700 Lithium-Ion (3.7V 5000mAh base cells)
Nominal Voltage	72V DC (20S Configuration)
Capacity Options	10Ah, 15Ah, 20Ah, 25Ah, 30Ah, 35Ah, 40Ah, 45Ah, 50Ah
Voltage Range	55V Cutoff – 84V Full Charge
Continuous Discharge Current	40A / 50A Continuous
Peak Burst Discharge	80A / 100A Peak
Max Suitable Motor Power	Up to 3800W (72V)
Connectors	XT90 Discharge / DC5.5×2.1mm Charge Port
Cycle Lifespan	> 1,000 Full Cycles
Charger Included	84V 5A Fast Charger (CC/CV Mode)
Operating Temperature	Charge: $0$ $45;$ Discharge: $-20$ to $65$
Certifications	CE Certified