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7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
Specifications
Place of Origin :
Shenzhen, China
Model Number :
21700-20000mAh-7.4V
Payment Terms :
T/T
Brand Name :
MEISAEN
Certification :
UN38.3 MSDS IEC62133 CE ROHS
MOQ :
1000PCS
Supply Ability :
100000PCS
Description
Power your high-demand devices with our 7.4V 20000mAh 21700 lithium-ion battery pack. Built with premium 21700 cells in a 2S4P configuration, this pack delivers a massive 20000mAh capacity at 7.4V, offering exceptional runtime and stable power output for your most power-hungry electronics.

Key Features

  • Ultra-High Capacity: 20000mAh nominal capacity at 7.4V (8.4V fully charged), providing industry-leading runtime for your devices.
  • Premium 21700 Cells: Utilizes high-quality 21700 lithium-ion cells, known for their high energy density and long cycle life.
  • Integrated BMS Protection: Built-in safety circuit safeguards against overcharge, over-discharge, overcurrent, and short circuits for worry-free operation.
  • Compact & Robust Design: Dimensions of 42 × 42 × 142mm make it easy to integrate, while the durable blue PVC heat shrink casing offers excellent insulation and impact protection.
  • Plug-and-Play Connector: Pre-fitted with a standard 2-pin red connector for easy installation (custom connectors available on request).
  • No Memory Effect: Recharge at any level without reducing overall capacity, ensuring consistent power delivery over hundreds of cycles.

Specifications

Parameter Details
Cell Type 21700 Lithium-Ion
Configuration 2S4P (2 Series, 4 Parallel)
Nominal Voltage 7.4V
Nominal Capacity 20000mAh
Rated Energy 148Wh
Full Charge Voltage 8.4V
Cut-off Voltage 6.0V (typical)
Connector 2-Pin Red Connector
Dimensions 42 × 42 × 142 mm
Protection Overcharge, Over-discharge, Overcurrent, Short Circuit
Operating Temp (Discharge) -20℃ ~ 60℃
Operating Temp (Charge) 0℃ ~ 45℃

Common Applications

Perfect for powering a wide range of 7.4V / 8.4V devices requiring maximum runtime:
  • High-power portable speakers and audio equipment
  • LED lighting systems, outdoor floodlights, and solar lights
  • Robotics, automation projects, and RC vehicles
  • Portable medical devices and monitoring equipment
  • Small pumps, fans, and power tools
  • Off-grid backup power supplies and DIY projects

Safety & Usage Tips

  1. Use only a dedicated 8.4V lithium-ion battery charger with matching polarity to avoid damage.
  2. Do not expose the battery pack to water, high humidity, or extreme temperatures outside the specified ranges.
  3. Keep away from metal objects that could short-circuit the terminals.
  4. If the pack swells, leaks, or emits an unusual smell, discontinue use immediately.
  5. For long-term storage, keep the pack in a cool, dry place with a 40-60% charge level.7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
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7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects

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Product Detail
Place of Origin :
Shenzhen, China
Model Number :
21700-20000mAh-7.4V
Payment Terms :
T/T
Brand Name :
MEISAEN
Certification :
UN38.3 MSDS IEC62133 CE ROHS
MOQ :
1000PCS
Contact Supplier
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects
7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power Projects

Shenzhen Meisha New Energy Technology Co., LTD

Verified Supplier
1 Years
shenzhen
Since 2016
Business Type :
Manufacturer, Exporter
Main Products :
New Energy Battery, Polymer Lithium Ion Battery, 18650 Lithium Battery
Total Annual :
2000USD-3000
Employee Number :
100~150
Certification Level :
Verified Supplier
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