GTK Heavy-Duty 72V Lithium-Ion Battery Series –

Extended Capacity Options (20Ah to 65Ah) for 3000W–3500W Electric Motorcycles, Scooters & Solar Storage (Customizable 50A Smart BMS, 84V CC/CV Charger Included)

Power high-torque electric motorcycles, long-range mopeds, high-speed scooters, or solar storage banks with the GTK 72V High-Capacity Lithium-Ion Battery Series. Engineered with high-density 3.7V Li-ion cells, this battery platform delivers continuous high-amperage output to drive 3000W to 3500W motors without experiencing performance-robbing voltage drop.

Available in versatile capacities ranging from compact 20Ah packs up to massive 65Ah long-range arrays, each pack is governed by a 50A continuous discharge BMS (customizable for higher power needs) and delivers over 1,500 full charge cycles. Designed for both high-drain urban transit and stationary renewable storage, every set comes complete with a dedicated 84V smart CC/CV charger.

⚠️ System Compatibility & Operating Limits

IMPORTANT VOLTAGE & POWER SPECIFICATIONS:

• Nominal 72V System: Operates within an 84V full charge voltage down to a 50V discharge cut-off voltage. Ensure your motor controller operates within this DC range.

• Continuous Discharge Current: Rated for 50A continuous output (capable of powering 3500W systems), with custom BMS configuration options available upon request.

• Charging Protocol: Must be charged using the included 84V constant-current / constant-voltage (CC/CV) smart charger to maintain cell balance and longevity.

🚀 Key High-Performance Features

• High-Density 3.7V Lithium-Ion Chemistry: Built using premium cylindrical or prismatic Li-ion cells to provide maximum watt-hour capacity per pound.

• Supports Motors Up to 3500W: Designed to easily handle high-wattage electric motorcycle controllers, steep hill climbs, and quick acceleration bursts.

• 1,500+ Deep Cycle Lifespan: Engineered to maintain high capacity retention across 1,500+ full charge/discharge cycles.

• Customizable Physical Footprint & BMS: Tailored sizing and BMS current tuning available to ensure seamless fitment into custom motorcycle frames or storage bays.

• Versatile Multi-Application Design: Fully compatible with electric vehicles, off-grid solar storage arrays, electric skateboards, and backup power banks.

• CE Safety Certified: Tested and verified under international European safety standards.

📊 Technical Specifications Matrix

Descriptions

72V20Ah/35Ah/45Ah/40Ah/65AhLi-ion Battery pack built-in BMS

Recommended to use for motor:72V

Capacity:20Ah/35Ah/40Ah/45Ah/55Ah/65Ah

Charging current:standard5A, max 20A can be customized

Continuous discharging current: 50A, about 3500W. Can be customized

Applications: Vehicle, Solar Storage , Boat ...

Dimension:

20Ah 210*170*190mm  about 10kg

35Ah 300*200*180mmabout14kg

40Ah 330*250*210mmabout15kg

45Ah 330*223*170mmabout16kg

55Ah 340*270*210mmabout 18kg

65Ah 350*280*220mmabout20kg

Working temperature:

Charge Temperature:  0~45°C

Discharge Temperature:  -20~65°C

Retention of charge (store in one month) : ≥95

Discharge cut-off voltage: 50V

Cycle Life:>2,000 times

Charge limited voltage:84V

Advantgage

1, High energy density

2, Pollution-free

3, Long cycle life

4, No memory effect

5, Capacity, resistance, Voltage, platform time consistency is good

6, With short-circuit production function, safe and reliable

7, Good consistency, low self-discharge

8, Lightweight, small size

Packing included

1.1pcs 72V Li-ion Battery with BMS Built-in

2.1pcs 84V 5Amps Lithium battery charger.