Fullymax 7.4V 4400mAh 2S 30C li-po batteries with DEANS/T-Plug

Fullymax 4400mAh 2S Lipo is an 7.4V 4400mAh LiPo battery. These 4400mAh 2S LiPo batteries provide high quality, reliable power for RC helicopters, F3A Fix-wing airplane, RC aircraft, RC helicopters, etc. Fullymax 4400mAh 7.4V LiPo battery is one of the top rank battery corporations with deep research and manufacturing on LI-PO by the effort of more than 130 professional engineers and technicians with 22 years exquisite battery technology. 

The Fullymax brand holds the core values of "Customer first Integrity and professionalism Scientific innovation Win-win cooperation". All batteries are tailored for various scales of the RC Models such as electronic cars, nitro cars, airplanes, vessels and also other models, toys, electric tools, electric bikes, electric autos, digital products etc.

Manufacturing Capability 

Capacity&Leadtime

   ●  Stacking/per day:50Kpcs

   ● Winding/per day:2,00Kpcs

● Regular Model:≤8 weeks

● Customized:16-18 weeks(The first order, if nonew facility added )

ISO9001

Quality Management System

ISO14001

Environmental Management System

Occupational Health And

Safety Management System

Hazardous Substance Process

Management System

Aeroepace Quality Systems

AS9100D:2016

Safety and environmental Certificates capability&service

• Simulation tests of safety certificates proceeded
• Service of certificates application for customers

• Electric Performance Test
• Safety Performance Test
• Mechanical Performance Test
• Environmental Performance Test
• Storing Performance Test
   

polymer (Li-Po) batteries.
In general, the diferences lie in the materials made of the positive & negative terminals, the area density design, the electrolyte ingredient, the septum data and the density of inside pieces.

When a Li-Po battery is made, five main aspects should be considered carefully:

(1). Battery Pack should have suficient strength, so that the polymer battery inside could be efectively protected from mechanical shocks;

(2). The polymer cell should be fixedto the battery pack onits large surface area - no cell movement in the battery packshould be allowed;

(3). No sharp edge components should be inside the packcontaining the polymer battery, and meanwhile, suficient insulation layer between wiring and the cell should be used to maintain multiple safety protection;

(4). Ultrasonic welding is recommended for polymer tab connection to obtain low-resistance, high-reliability and light-weight properties;(5). Polymer packs shouldbe designed carefully so that no shear force is applied, and also, no heat is generated even when leakage ocurs for mishaps. PCM from electrolyte leakage should be isolated as perfectly as posible, and narrow distance between bare circuit patterns should be avoided.

The gases vary depending on different situations:

1. If the gases were generated by electrolyte gas reaction, they would mainly beelectrolyte solvent components, for example: EC, DMC, EMS and so on;

2. If the gases were generated by overcharging, they would mainly be H2, CO, CO2,CH4 and so on;

3, If the gas were generated by improper sealing, they would mainly be H2, C2,H2and so on.
All of these gases are not dangerous due to low volume.

Organic solvents easily decompose on the negative electrodes during charging, leading to battery swelling, drop of cell capacity, and unsafety caused by active
reaction. The purpose of the formation process is to form a solid layer called the solid electrolyte interphase (SEl), which is electrically insulating yet provides significant ionic conductivity. This interphase prevents further decomposition of the electrolyte after the second charging.