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Fullymax Battery Co., Ltd.

  • China,Huizhou ,Guangdong
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China 2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery
China 2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery

  1. China 2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery
  2. China 2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery

  1. MOQ: 300
  2. Price: To be negotiated
  3. Get Latest Price
Payment Terms T/T, Western Union, MoneyGram, etc
Supply Ability 50Kpcs for stacking cell per day, 200Kpcs for winding cells per day
Delivery Time 3~7 working days for small order, 14~21 working days with cells in stock for mass order, 4~6 weeks for cells out of stock
Packaging Details color box
Model No. FB4000-45C-7.4V-WB
Model Description 2S1P 7.4V 4000mAh
Burst (10Sec) 45C
Conti. C-rate 20C
Dimensions(H x W x L ) 25.1x47x139 mm
Weight 215 g
Wh 29.6 Wh
Wire Gauge AWG10#
Wire length 100mm
Discharge plug XT90 or Deans (Choose the favoriate plug you need)
Balancer Connector Type JST-XHR
Brand Name FULLYMAX
Model Number FB4000-45C-7.4V-WB
Place of Origin China

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  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T, Western Union, MoneyGram, etc Supply Ability 50Kpcs for stacking cell per day, 200Kpcs for winding cells per day
Delivery Time 3~7 working days for small order, 14~21 working days with cells in stock for mass order, 4~6 weeks for cells out of stock Packaging Details color box
Model No. FB4000-45C-7.4V-WB Model Description 2S1P 7.4V 4000mAh
Burst (10Sec) 45C Conti. C-rate 20C
Dimensions(H x W x L ) 25.1x47x139 mm Weight 215 g
Wh 29.6 Wh Wire Gauge AWG10#
Wire length 100mm Discharge plug XT90 or Deans (Choose the favoriate plug you need)
Balancer Connector Type JST-XHR Brand Name FULLYMAX
Model Number FB4000-45C-7.4V-WB Place of Origin China
High Light 2s 4000mah lipo FULLYMAX7.4 v 4000mah batterylithium ion rc battery

 

Fullymax 2S Lipo Battery 45C 4000mAh 7.4V Lipo Battery with Deans Hard case battery charger for rc car

 

Fullymax 2S Lipo Battery 45C 4000mAh 7.4V Lipo Battery with Deans T Plug Hard case lipo is widely used on car models. The discharge rate is 45C, and energy density can reach 230Wh/kg, which can make sure the strong and stable power supply.

 

- 4.2V / 4.35V/ 4.4V Various Voltage Systems, Discharge at 15C~70C
 

- Low IR, Good Consistency
 

- Excellent Power, Steady Discharge Performance, Light Weight

 

Our battery cells are made of patented constituents of electrolytes, which have excellent performance at low temperature (with high discharge current even under -10℃) and higher discharge rates compared with other general batteries with similar density. By adding special nano-tech materials and using automatic/semi-auto equipments during cell processing, we obtain battery packs with high energy density (up to 230Wh/kg), low internal resistance, long cycle life, and high quality consistency. Meanwhile, a proper amount of Li3V2(PO4)3 added to the anode of our battery packs can effectively decrease the voltage dropping speed at the early stage of the battery discharge procedure, featuring flat discharge curve during normal usage.


 

 

     Related Product

For other configurations (without discharge plug) with same cell model, please refer below table.

 

Battery pack Model Description Hard case /lead wire Burst (10Sec) Conti.C-rate Dimensions Weight Wh
FB4000-45C-7.4V-WB 2S1P 7.4V 4000mAh Hard case , lead wires at two corners 45C 20C 25.1x47x139mm 215g 29.60
FB4000-45C-11.1V-WB 3S1P 11.1V 4000mAh Hard case , lead wires at two corners 45C 20C 25.1x47x139mm 303g 44.40
FB4000-45C-14.8V-WB 4S1P 14.8V 4000mAh Hard case , lead wires at two corners 45C 20C 36.6x47x139mm 392g 59.20

 


     Product Feature

-  Ultra-high voltage under load, flat discharge curve, excellent performance at low temperature and high discharge rate.


-  High quality consistency.


-  Patented electrolytes and ultrasonic welding ensures low-resistance, high-reliability and light-weight properties.


-  Longer cycle life compared with most standard batteries in the market.


-  Applications: widely compatible with all major brands car models.

 

 

 

 

      Application

Compatible with a wide range of RC cars, buggies and monster trucks

 

 

 

 

      Packaging & Shipping

Regular Safety Packing Or As Customer's Requirements.

Shipping By Sea, Air Or UPS, DHL, FedEx Express.

 

PAYMENT TERMS

 

EXPRESS OPTIONS

 

 

 

 

 

 

      Packaging & Shipping

Regular Safety Packing Or As Customer's Requirements.

Shipping By Sea, Air Or UPS, DHL, FedEx Express.

 

PAYMENT TERMS

 

EXPRESS OPTIONS

 

 

 

 

 

    Manufacturing Capability

Capacity&Leadtime

 

 

● Stacking/per day:50Kpcs

 

● Winding/per day:5,00Kpcs

 

● Regular Model:≤8 weeks

 

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

 

 

The new plant will be located in the Dongjiang Bay Industrial Park, which will be a national high-end industrial park special for new energy, new information technology and intelligent equipment fields based on the “3+7” industrial park planning and deployment proposed by Huizhou relying on the Greater Bay Area, aiming to integrate Huizhou’s “1+4” industrial parks. The area of the new plant is estimated to be 30,000 square meters. With new high-end equipment and workshop environment, the goal is to build a high-end production line dedicated to high-end customers.

 

 

 

 

     Quality Management System

Management Improvement according to international standards

 

  • Quality management systems Requirements for Aviation
  • ISO9001 Quality Management System
  • ISO14001 Environmental Management System
  • Hazardous Substance Process Management System
  • Occupational Health And Safety Management System

 

Safety and environmental Certificates

capability&service

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

 

Performance Test Capability

 

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

 

 

 

 

     FAQ

Q1. How to Charge li-Po battery?

1. Charging Current: Charging current should be less than the maximum charging current listed in specifications. Charging with higher current than recommended may cause serious damage to cell performance and safety features,leading to heat generation or leakage.

2. Charging Voltage: Charging should be performed at a voltage less thanthat listed in specifications (4.20V/cell). Charging at above 4.25V-the absolute maximum voltage, must be strictly prohibited.The chargers used should have this voltage limitation function. Charging with higher voltage than specified is very dangerous, which may cause serious damage to the cell performance and safety features, leading
to heat generation or leakage.

3. Charging Temperature: The cells should be charged within a range of temperatures listed in the specifications. Always let the batteries cool down to ambient temperature before charging.

4. Prohibition of Reverse Charging: Do not reverse the positive(+) and negative(-) terminals. Otherwise, the batery pack wil be reverse-charged and abnormal chemical reactions may ocur. Ecesively high current may flow during recharging, possibly leading to damage, overheating, smoke emission, bursting and/or ignition.
5. Use specific Li-Po charger only. DO NOT use a Ni-MH or Ni-Cd charger. It is your responsibility solely to ensure that the charger you purchased works properly.
6. Never charge batteries unattended. Always monitor charging process to assure batteries are being charged properly. Always charge the batteries in an isolated and safe area away from any flammable or/and combustible materials.

 

 

Q2. Why do we need formation process?

Organic solvents easily decompose on the negative electrodes during charging, leading to battery swelling, drop of cell capacity, and unsafety caused by activereaction. 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.

 

 

Q3. Why do Li-Po batteries bloat/swell?

The Li-Po batteries may bloat or swell due to the following reason:
1. Overcharging:Normally, the maximum charge voltage is 4.2V for RC batteries. If the batteries were overcharged beyond 4.4V, electrolytic oxidation process would happen, which generates mass gas leading to battery swelling.
2. Overheat:When discharging in high temperature or high C rate, the temperature of the inner part of the battery can be even higher, which gasify the electrolyte and results in swelling.
3. Shot-circuit.:If short circuit happened, the cell voltage would drop very fast and the electrolyte would be reactive to generate gases, leading to battery swelling.
4, Sealing:If sealed without proper processing, the battery cell would have water and air in, so that the electrolyte would be reactive to generate gases, leading to battery swelling.

 

Q4.What should be known about assembling battery packs?

1. Shocks, high temperature or contacts of sharp-edge components should not be allowed in battery pack assembling process.
2. Soldering directly to polymer tabs is not recommended. When you solder directly to the polymer tabs, it is necessary to ensure not to apply too high welding temperature and too long welding time, to guarantee that the temperature transmited to the cells is lower than 80℃. Temperature above 80℃ may cause damage to the polymer cells and degrade their performances.
3. In case that the battery packs are fixed by ultrasonic welding, it is necessary to ensure not to apply too much ultrasonic welding power to thepolymer cell and electronic circuits such as PCM. Otherwise, itmay cause serious damage to the cells and electronic circuit.

 
Q5. What are the diferences betwee high C-rate and low C-rate lithium?

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.

 

 

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer

  • Year Established:

    2001

  • Employee Number:

    600~800

  • Ecer Certification:

    Active Member

Who Are We? Fullymax Battery Co., Ltd., with the brand name Fullymax, it is an innovative high-tech enterprise and National Little Giant specialized in the research and production of high rate discharge pouch cells, battery packs, and battery BMS solutions, as well as offering batteries with di... Who Are We? Fullymax Battery Co., Ltd., with the brand name Fullymax, it is an innovative high-tech enterprise and National Little Giant specialized in the research and production of high rate discharge pouch cells, battery packs, and battery BMS solutions, as well as offering batteries with di...

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  • Fullymax Battery Co., Ltd.
  • Building 02&03, Dongjiang Industrial Park, Shuikou Town,Huicheng District, Huizhou, Guangdong, China
  • https://www.fullymaxbattery.com/

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