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{"title":"7.4V 21700 Lithium Battery 20000mAh High Capacity For Robotics DIY Power","imgUrl":"https:\/\/img.chinax.com\/nimg\/a9\/f0\/1781ec68f7316d0c80c4ae421543-200x200-1\/7_4v_21700_lithium_battery_20000mah_high_capacity_for_robotics_diy_power.jpg","attrs":{"Place of Origin":"Shenzhen, China","Model Number":"21700-20000mAh-7.4V","Payment Terms":"T\/T","Brand Name":"MEISAEN"}}
{"title":"8000mAh 3.7V 1S2P 21700 Lithium Battery With High Rate Discharge Large Capacity","imgUrl":"https:\/\/img.chinax.com\/nimg\/fa\/fa\/46c2314db680fc11412b630f9aaf-200x200-1\/8000mah_3_7v_1s2p_21700_lithium_battery_with_high_rate_discharge_large_capacity.jpg","attrs":{"Certification":"UN38.3 MSDS IEC62133 CE ROHS","Packaging Details":"carton","Delivery Time":"10-15 days","Dimensions":"Length 42.5mm * Width 21.5mm * Height 710mm"}}
{"title":"74Wh 7.4V 10000mAh Lithium Battery For Portable Devices Small Pumps Fans","imgUrl":"https:\/\/img.chinax.com\/nimg\/b5\/83\/fb7a671a7be37e0a32465553dd81-200x200-1\/74wh_7_4v_10000mah_lithium_battery_for_portable_devices_small_pumps_fans.jpg","attrs":{"Minimum Order Quantity":"1000PCS","Model Number":"21700-7.4V-10Ah","Payment Terms":"T\/T","Brand Name":"MEISAEN"}}
{"title":"21700 3P Lithium Battery 15000mAh 3.7V For LED Lights Portable Devices","imgUrl":"https:\/\/img.chinax.com\/nimg\/74\/70\/ab80d44e92ff36e352827da4feec-200x200-1\/21700_3p_lithium_battery_15000mah_3_7v_for_led_lights_portable_devices.jpg","attrs":{"Model Number":"21700-15000","Packaging Details":"carton","Brand Name":"MEISAEN","Minimum Order Quantity":"100PCS"}}
{"title":"118.4Wh 16000mAh 7.4V 21700 Lithium Battery For High Demand Devices BMS","imgUrl":"https:\/\/img.chinax.com\/nimg\/4c\/94\/d0db1719f5de8d4e39c128f7a92a-200x200-1\/118_4wh_16000mah_7_4v_21700_lithium_battery_for_high_demand_devices_bms_protected.jpg","attrs":{"Model Number":"7.4V 16000mAh 21700","Payment Terms":"T\/T","Brand Name":"MEISAEN","Minimum Order Quantity":"1000PCS"}}
{"title":"3.7V 8000mAh High Capacity 21700 Lithium Battery Pack 1S2P For LED Floodlights","imgUrl":"https:\/\/img.chinax.com\/nimg\/aa\/ab\/37b479ad31c6cb7c1de5c36469be-200x200-1\/3_7v_8000mah_high_capacity_21700_lithium_battery_pack_1s2p_for_led_floodlights_smart_locks.jpg","attrs":{"Certification":"UN38.3 MSDS IEC62133 CE ROHS","Place of Origin":"Shenzhen, China","Minimum Order Quantity":"1000PCS","Payment Terms":"T\/T"}}
{"title":"7.4V 9000mAh 21700 Battery Pack 2S2P For Arduino Robotics DIY Electronic","imgUrl":"https:\/\/img.chinax.com\/nimg\/d4\/80\/eaa68096f007610c7e1848bf4942-200x200-1\/7_4v_9000mah_21700_battery_pack_2s2p_for_arduino_robotics_diy_electronic_projects.jpg","attrs":{"Model Number":"21700-9000-7.4V","Payment Terms":"T\/T","Place of Origin":"Shenzhen, China","Supply Ability":"100000PCS"}}
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
Use only a dedicated 8.4V lithium-ion battery charger with matching polarity to avoid damage.
Do not expose the battery pack to water, high humidity, or extreme temperatures outside the specified ranges.
Keep away from metal objects that could short-circuit the terminals.
If the pack swells, leaks, or emits an unusual smell, discontinue use immediately.
For long-term storage, keep the pack in a cool, dry place with a 40-60% charge level.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2016
Total Annual:
2000USD-3000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Shenzhen Meisha New Energy Technology Co., Ltd. is a comprehensive enterprise mainly engaged in industry-customized battery modules, scheme design, research and development, production and marketing, and its technical level is in the leading position in the industry. Established in July 2016 with a ... Shenzhen Meisha New Energy Technology Co., Ltd. is a comprehensive enterprise mainly engaged in industry-customized battery modules, scheme design, research and development, production and marketing, and its technical level is in the leading position in the industry. Established in July 2016 with a ...
