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HB 12.8V 21Ah 26650 Iron Phosphate Energy Storage Power Lithium Battery



Lithium polymer battery, or more correctly lithium-ion polymer battery is a rechargeable battery of lithium-ion technology using a polymer electrolyte instead of a liquid electrolyte. High conductivity semisolid (gel) polymers form this electrolyte. These batteries provide higher specific energy than other lithium battery types and are used in applications where weight is a critical feature, such as mobile devices, radio-controlled aircraft and some electric vehicles.
LiPo cells provide manufacturers with compelling advantages. They can easily produce batteries of almost any desired shape. For example, the space and weight requirements of mobile devices and notebook computers can be met. They also have a low self-discharge rate, which is about 5% per month.

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Hoppt product’s safety performance is comfirmed to

  • UL1642 standard.No leakage, capacity Recovery rate:³ 90% (storage 3h)
  • No explode, no fire, no  leakage.
  • Avoid insolation or dropping into fire.
  • Avoid shorting the battery.
  • Avoid excessive physical shock or vibration.
  • Don’t disassemble or deform the battery.
  • Don’t immerse in water.
  • Don’t use the battery mixed with other model or manufacturer batteries.
  • Battery charge should be used appropriate charger.



Nominal capacity 21Ah
Min. Capacity 19Ah
Cell Initial Impedance ≤ 120mΩ
Cycle life >2000 (at 0.2C discharge)
Normal Voltage 12.8V
Initial Voltage ≥10.0V


Battery pack Thickness max. ≈160MM
Battery pack Width max. ≈160MM
Battery pack Height max. ≈100mm
Pack Impedance 150mΩ
Cell type Lithium iron phosphate battery



Discharge Temperature 0~ 60℃
Charge Temperature 5~ 50℃
Limited Charge Voltage 12.8V
Cut-off Voltage 10.0V
Standard Charging Method 0.2C CC current charge to 12.8V, then CV charge till current declines to


Operating humidity Range ≤ 90%RH


Standard Charging Current 0.2C
Standard Charging Time 6~7 hours
Rapid Charging Current 0.5C
Rapid Charging Time about 3.5hours
Standard Discharging Current 0.2C
Max. Discharging Current 1C



special equipment
Rail transportation
Internet of Things
Medical equipment
Energy storage backup
Security Communication
Exploration surveying and mapping
electric equipment

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