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LiFePO4 Battery, Battery Pack, Lithium Battery manufacturer / supplier in China, offering K2 Energy 12V 5ah Starting Battery Pack, Rear Rack 48V11.6ah Electric Bike Lithium Battery Pack Electric Bicycle Battery Ebike Battery Lithium Battery Li-ion Battery Power Battery Rechargeable Battery, Smart Two Wheel Electric Self Balance Scooter/Board with Bluetooth and so on.

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Supplier Homepage Product K2 Energy/A123 Packs K2 Energy 12V 5ah Starting Battery Pack

K2 Energy 12V 5ah Starting Battery Pack

FOB Price: US $46.5 / Piece
Min. Order: 5 Pieces
Min. Order FOB Price
5 Pieces US $46.5/ Piece
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Port: Shenzhen, China
Production Capacity: 50000PCS/Year
Payment Terms: L/C, T/T, Paypal

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Basic Info
  • Model NO.: BB-K21205
  • Connection Mode: Series and Parallel
  • Discharge Rate: High Discharge Rate
  • Accessories Type: Battery
  • Standard Voltage: >12V
  • Electrolyte: LiFePO4
  • Structure: K2/A123 26650 4s2p
  • Cell Adopted: K2/A123
  • Trademark: BB
  • Specification: CE, RoHS, UN38.3
  • HS Code: 8504401990
  • Type: LiFePO4
  • Rechargeable: Chargeable
  • Size: Medium
  • Rated Capacity: >1000MAH
  • Usage: Motorcycle
  • Application: Motorcycle Starting
  • Dimension: 54*106mm
  • Discharge: 35c/70c
  • Transport Package: Standard Carton Package
  • Origin: USA
Product Description
K2 energy 12V 5AH starting battery pack

4S2P K2 Energy 26650P 12V5Ah K2 26650EV 8.32Wh Energy 35C/70C 2500-2600mAh High Power LiFePO4 26650 Rechargeable Cell: 3.2V 2600mAh

1. Characters
NO                  Items                                               Specification                       Remarks
1                  Battery type                                           LiFePO4                        3.2V8.32Wh
2                  Brand                                                    K2 Energy
3                  Nominal capacity                                     2600mAh                           C/5
4                  Nominal voltage                                      3.2V
5                  Internal resistance                                  <11 mΩ                             C/5z
6                  Weight                                                 80.5g±2 g
7                 Continuous discharge current                    ≤10A                              1kHz,AC
8                 Burst discharge current                            70A                               30s, ≥2.5V
9                 Charge current                                       2600mA
10               Charge cut off voltage                             3.65V
11               Discharge cut off voltage                         2.0V
12               Working temperature                          -20ºC--+60ºC
13               Max continuous discharge current              30A                               30s, ≥2.5V
14               Max burst discharge current                      90A
15               Max charge current                                 52A
16               Max charge cut off voltage                       4.1V
17               Max discharge cut off voltage                   2.0V

2. Battery performance
A:Discharge characteristics:
Discharge capacity/Nominal capacity×100%
A)0.2C5A ≥100% B)0.5C5A ≥98% C)1C5A ≥95% D)2C5A ≥90%
The Curves of charging and discharging should be smooth Standard charge at 0.2C5A under condition of normal atmospheric pressure and the environmental for 10min and discharge at 0.2C5A,0.5C5A,1C5A,2 C5A to 2.5V respectively. Charge/discharge cycle can be conducted for 3 times before meeting the Standards (the same below).
B:Normal Storage
Residual Capacity≥Nominal capacity*85% Recoverable capacity≥ Nominal capacity*90% OCV decrease≤3% Internal Resistance increase≤20%
Measure initial status and initial capacity. Store for 28 days after standard charge, the measure final status and residual capacity at 0.5C5A to 2.5V;After charge/discharge (0.5C5A/0.5C5A) cycle can be conducted for 3 times, recoverable capacity will be tested at 0.5C5A
C:Cycle Life
Discharge capacity≥Nominal Capacity 80%
Measure initial status and initial capacity, then conduct 1C5A/1C5A cycle for 1600 times. The discharge capacity shall be measured after 1600 cycle.
D:High-low Temperature Discharge
0.2C5A Discharge time Stores 3 month-long the batteries ≥4.5h;Stores 6 month-long the batteries ≥4.25h;Stores 12 month-long the batteries ≥4h.Measure initial capacity and initial status. Battery charge after 3.35V .measure initial capacity. The distinction room temperature stores 3 months, 6 months, 12 months later, measure battery's final condition,Then circulates 3 time record battery's discharge time by 0.5C/0.5C.

Other models:
Item No.LiFePO4 Motorcycle Start Battery 
with K2 cells
LiFePO4 Motorcycle Start Battery with A123 cells
BB-SB4S1PK2 26650 2500mAh 4S1P
Max. constant current: 70A(5s)
Compatible: 50~250cc Motorcycle
A123 26650 2500mAh 4S1P
Max. constant current: 70A(5s)
Compatible: 50~250cc Motorcycle
A123 26650 2300mAh 4S1P
Max. constant current: 70A(5s)
Compatible: 50~250cc Motorcycle
BB-SB4S2PK2 26650 2500mAh 4S2P
Max. constant current: 120A(5s)
Compatible: 50~250cc Motorcycle
A123 26650 2500mAh 4S2P
Max. constant current: 120A(5s)
Compatible: 50~250cc Motorcycle
A123 26650 2300mAh 4S2P
Max. constant current: 120A(5s)
Compatible: 50~250cc Motorcycle
BB-SB4S3PK2 26650 2500mAh 4S3P
Max. constant current: 180A(5s)
Compatible: 500~1300cc Motorcycle
A123 26650 2500mAh 4S3P
Max. constant current: 180A(5s)
Compatible: 500~1300cc Motorcycle
A123 26650 2300mAh 4S3P
Max. constant current: 180A(5s)
Compatible: 500~1300cc Motorcycle
BB-SB4S4PK2 26650 2500mAh 4S4P
Max. constant current: 260A(5s)
Compatible: 500~1300cc Motorcycle
A123 26650 2500mAh 4S4P
Max. constant current: 260A(5s)
Compatible: 500~1300cc Motorcycle
A123 26650 2300mAh 4S4P
Max. constant current: 260A(5s)
Compatible: 500~1300cc Motorcycle

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