7.4 V 4000mah 18650 Li Ion Rechargeable Battery
7.4 V 4000mah 18650 Li Ion Rechargeable Battery
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Basic Infomation
Place of Origin: Fujian China
Brand Name: MEGA
Certification: MSDS, REACH, UN38.3
Model Number: 7.4v 4000mah lithium ion battery pack
High Light:

REACH 4000mah 18650 Li Ion Rechargeable Battery


UN38.3 18650 7.4 V 4000mah Battery


500times 7.4 V 18650 Li Ion Rechargeable Battery

Payment & Shipping Terms
Packaging Details: 600pcs/box, 4boxes/ctn
Delivery Time: 3-7days
Supply Ability: 300000pcs/day
Cell Size:: 38*38*70mm(T*W*H)
Volt: 7.4V
Capacity:: 4400mAh
Standard Charging Rate:: 0.2C
Cut Off Voltage:: 6.0V
Cycle Life:: 500 Times
Charging Temperature:: 0°C- 45°C
Working Temperature:: -20°C- 60°C
Product Description

7.4v 4000mah 18650 li-ion rechargeable battery pack alarm system power supply[GPE] 

Key Specifications/Special Features:

Battery Specification:
  • Battery Type: Lithium ion battery
  • Model No.: ICR18650-2S2P
  • Volt&Capacity: 7.4V 4400mAh
  • Cell Size: 38*38*70mm(T*W*H)
  • Standard Charging Rate: 0.2C
  • Standard Discharging Rate: 0.2C
  • Max continuous discharging Rate: 1C
  • Pulse Discharging Rate 1.5C
  • Cut off voltage: 6.0V
  • Cycle life: 500 times
  • Charging Temperature: 0°C- 45°C
  • Working Temperature: -20°C- 60°C
Product Features:
  • High energy density-Advanced technology provides ultra-high capacity Li-ion batteries.
  • Long cycle life-capacity recovery can be above 80% after 500cycles.
  • Safety-All batteries are equipped with multiple safety features, including a safe shut-down separator and a safety vent.
  • Superior storage characteristics-The self-discharge rate of Lithium-ion battery is about 3% per month when stored at room temperature.
  • Various Products-Hundreds of moulds from micro size 200mAh to large capacity 6000mAh.
GPE Advantages:
  • Technology-With more than 20 years of battery manufacturing and automatic production line, GPE can guarantee our products better products.
  • R&D-Experienced R&D team with over 60 engineers for supporting OEM and ODM requirements.
  • Safety-Various tests are done at GPE to ensure the safety of our products for our customers.
  • Certificates-CE, RoHs, BIS, KC, CB, UL, MSDS, UN38.3, IEC61233 certificated.
  • Service-GPE has a professional sales team to provide professional project solutions and after-sale services.
Power Bank, RC toys, Power Tool, Electronic bike, Electric scooter, LED light, Security Products, Solar&Wind Energy Storage System, etc.

7.4v 4000mah 18650 li-ion rechargeable battery pack

7.4 V 4000mah 18650 Li Ion Rechargeable Battery 0

Nominal voltage 7.4V
Nominal capacity 4000mAh
Size length × width × high (mm)
L40*W40*H70MM(with PCM)

High energy density

Safety and reliable(with PCM)

Long cycle life

no memory

Never explosion,stable performance,environment friendly

capacity and size could be customized

Weight about 95g
Max charge current 0.5-1C
Max discharge current 1-2C
Operating environment Charging, 0°C ~ 45°C ; 65±20%RH
Discharging, -20°C~60°C ; 65±20%RH
Storage environment -20°C~45°C

storage for a long time(>3 months) and

the storage condition shall be:<35°C;65±20%RH;

(80% Prime Capacity) :
Over 500times
Charging Attention

Charging current and charging voltage

should be less than specified in the Product Specification.

The charger shall be designed to comply with Specification.

It is dangerous that charging with higher current or voltage

than Product Specification may cause damage to the cell electrical,

mechanical safety performance.

Battery Cell 18650 cell or other Brand 18650 cell
PCB Safety Function

Cell balancing,Over-discharge,Over current protection,

Over-charge,Temperature protection,Secondary protection.

7.4 V 4000mah 18650 Li Ion Rechargeable Battery 1
Q1: What is your terms of payment?
A1: We can accept T/T,Paypal,Western Union,Trade Assurance,etc.
Q2: Are you a factory or trade company?
A2: we are a professional manufacturer .daily output is 300000pcs batteries and 40000 assembled battery packs.
Q3: What's the lead time for the mass production?
A3: It depends on the actual situation,if with stock,the lead time will be 1-5 days,if without stock,it will depend on your order quantity,usually within 30 days.
Q4: Can I get the sample?
A4:Of course,we can send you sample to check the quality first,if you pay the freight.
Q5 : Can you make customized models?
A5: Of course. We have professional engineers that can give you the most suitable solution according to your special requirements.
Q6: When can I get the price?
A6: We usually quote within 14 hours after getting your inquiry.If you are urgent to get the price,please call us or tell us in your email so that we can handle your inquiry priority.
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Get in touch with us
Contact Person : Miss. Alice
Tel : 86 13063063211
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