Project Description

Li ion 18650 battery 7.4 v 4400mah

Li ion battery pack 7.4 v 4400mah build by lithium ion 18650 cells 2s2p. Cell voltage with 3.7 volt. and 2 18650 in serise to get 7.4 volt. 2 in parallel to get 4400mah Battery pack. This battery pack totally 4pcs ion 18650 inside with PCB protection circuit. Outside PVC blue. it is a perfect rechargeable battery pack for any electronic devices. CMX offer custom size cable and connector. Of cause, if you need other capacity like 2600mah cells. We can make total capacity 5200mah. So, just contact us for detail custom on pricing.

li ion battery pack 7.4 v 4400mah

Li ion 18650 battery 7.4v 4400mah

  • Nominal voltage: 7.4 volt
  • Nominal capacity: 4400mah/5200mah
  • Cell type: ICR ion 18650
  • Technology: Lithium ion
  • Approved certifications:UN38.3, CE, MSDS
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Li-ion battery pack 7.4 v 4400mah

CMX use high quality lithium ion 18650 battery cells 2200mah. Totally 4pcs to make this wrap pack.  7.4 volt rechargeable battery pack. battery 7.4 v 4400mah apply with 2S2P 18650 battery. Charging voltage at 8.4 volt. If you need 7.4v li ion battery chargers, please contact with us. We can custom make the battery charger with related charging connector.  4400mah battery pack can be widely used for different applications, like POS machine, portable media player, toy RC, other portable electronics.

  • Battery pack built in PCB protection. over charge, over discharge, over current and short circuit.
  • With very long times cycle life up to 500 times
  • It can run well under different temperature environment condition. Wide temperature range.

Product Details

Part Number 2S2P 18650 li-ion battery pack 7.4 v 4400mah
Rated Capacity  4400mAh
Nominal Voltage  7.4V
Max Charge Voltage  8.4V
Discharge Cut Off Voltage  5.5V
Charging Current  0.2
Max. Continuous Discharging Current  1C
Cycle Life  500 times
Discharge Rate  ≤1%
Dimensions (L*W*H)  70*75*18.5mm ±5mm / Customized
Weight  200g
Operating Temperature  Charging: 0 ~ 45℃/Discharging:-20 ~ 60℃
Storage Temperature  -10 ~ 45℃
Humidity  5% to 95% relative humidity
Certification  CE/RoHS/MSDS/UN38.3
Warranty  One year
Delivery period  7-20 days, depending on stock and quantity.
 Main protection function Overcharge, over discharge, over current, short circuit, etc.

How to charge a 7.4 V lithium ion battery?

As this is lithium type batteries. You need start by charging them at a constant, controlled current (less than 1C) until the voltage of the cell becomes 8.4 with. then you hold the voltage constant at 8.4v and allow the current to drops to 0. Of cause you can easy to let CMX provide a proffesional charger with the battery pack. We will manage all.

How long does a 4400mah battery last?

This is always depending on what the power consumption on your device. Our 7.4v 4400mah li ion battery pack with total energy 7.4V*4.4ah=32.56Wh. So If your device is 5W. Means the 4400mah battery pack can support 6.5 hours. One thing to keep in mind is what kind of tasks and power consumptions you are performing while running on the battery.

Why work with CMX on the 7.4v lithium ion battery pack packs?

7.4 v rechargeable battery production
    CMX is a OEM Lithium ion battery pack manufacturer based in China. We has 20 thousand square meters plant 12 automatic production line 600,000 battery packs and chargers production capacity a month. If you need order in bulk quantity. We can delivery very fast. Not delay any of your project.
    In CMX. We only stick with high quality lithium 18650 cells. From the productions, we also Strict control for cleanliness in dust-free workshop from IQC,IPQC to OQC, we control every step strictly CE, UL, SGS, FCC, ROHS and ISO9001: 2000 certified.
    That’s our most important value. Our factory is your factory. CMX give the most competitive low price to customer. We dedicated and experienced engineering, manufacturing and quality control teams work close to support our customers from product design to mass production.
    Reply within 24 working hours. We use specialized equipment, well-known suppliers of materials to resolve customer issues, to test every product in 100% for the quality assurance.