Shenzhen Resky Electronics Co., Ltd.
| Payment Terms | Western Union,T/T |
| Supply Ability | 500pcs/day |
| Delivery Time | 15-20days |
| Packaging Details | Standard exporting packages |
| Rated Capacity | 20ah |
| Standard Voltage | 72V |
| Electrolyte | Li-ion |
| Cell | 21700 5000mAh Battery Cell |
| Motor | Above 1000W |
| Charging Cut-off Voltage | 84V |
| Dishcarging Cut-off Voltage | 50V |
| Color | Blue PVC |
| Cycle Life | 500cycles |
| Shipping | UPS, FedEx, TNT, DHL, by Air, by Sea |
| Brand Name | RESKY |
| Model Number | RSK-7220 |
| Certification | CE, RoHS, MSDS, Un38.3 |
| Place of Origin | China |
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Product Specification
| Payment Terms | Western Union,T/T | Supply Ability | 500pcs/day |
| Delivery Time | 15-20days | Packaging Details | Standard exporting packages |
| Rated Capacity | 20ah | Standard Voltage | 72V |
| Electrolyte | Li-ion | Cell | 21700 5000mAh Battery Cell |
| Motor | Above 1000W | Charging Cut-off Voltage | 84V |
| Dishcarging Cut-off Voltage | 50V | Color | Blue PVC |
| Cycle Life | 500cycles | Shipping | UPS, FedEx, TNT, DHL, by Air, by Sea |
| Brand Name | RESKY | Model Number | RSK-7220 |
| Certification | CE, RoHS, MSDS, Un38.3 | Place of Origin | China |
| High Light | 1400w Solar 21700 Li-Ion Cell ，20Ah Solar 21700 Li-Ion Cell ，72v Solar 21700 Li-Ion Cell | ||
Solar 21700 Li-Ion Cell 72v 20S4P 20Ah 1400w Power Lithium Ion Battery Pack For Electric Motocycle
Specification:
| Product name | 72V 20Ah |
| Model | RSK-7220 |
| Rated Capacity | 20Ah |
| Nominal Voltage | 72V |
| Over discharge protection voltage | 50V±0.05V |
| Over charge protection voltage | 84V±0.05V |
| AC Impedance New Cell Max.(mΩ) | ≤100 mΩ |
| Maximum Continuous Charge Current | ≤2A adjustment |
| Maximum Continuous Discharge Current | ≤10A adjustment |
| Maximum Pulse discharge current | ≤20A adjustment |
| Operation Temperature Range | Charge: 0~45°C,Discharge: -20~60°C |
| Storage Temperature Range | Less than 1 year: -20~25°C |
| Less than 3 months: -20~40°C | |
| Storage Temperature Range | Less than 30 Days: -25°C~45°C |
| Less than 90 Days: -25°C~30°C | |
| Weight | Approx 6.5kg |
| Cycle Characteristic | 500 times |
Advantages for 21700 li-ion battery packs:
1. Superior Energy Density
The 21700 cells (21mm diameter, 70mm length) offer higher energy density compared to older 18650 cells, storing more power in a compact form. This makes the pack ideal for space-constrained applications like e-bikes or portable power tools, providing extended runtime without bulk.
2. Extended Cycle Life
Utilizing advanced lithium-ion chemistry, the pack typically achieves 500–1000 charge cycles while retaining 80% capacity. Proper maintenance and a integrated BMS further enhance longevity, offering long-term cost savings.
3. Integrated Safety Mechanisms
Equipped with a Battery Management System (BMS), the pack safeguards against overcharge, over-discharge, short circuits, and thermal runaway. Premium 21700 cells often include built-in safety vents and stable chemistry to minimize failure risks.
4. Broad Temperature Tolerance
Operates effectively across a wide range (-20°C to 60°C), making it suitable for extreme environments, from winter outdoor use to high-temperature industrial settings. Storage stability is also enhanced with low self-discharge (1–2% monthly).
Pictures:
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
2012
Total Annual:
500000-1000000
Employee Number:
20~50
Ecer Certification：
Verified Supplier
Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ... Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ...
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