Home Application 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

Name: 2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery
Brand: FULLYMAX
SKU: FB4000-45C-7.4V-WB
Rating: 4.8 (194 reviews)

FB4000-45C-7.4V-WB

2S1P 7.4V 4000mAh

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Service Hotline：

0752-2322511

High Rate Discharge Li-Po Battery

Fullymax focuses on the high rate discharge pouch batteries, including power batteries for electric aviation aircraft (eVTOL), electric power , drones, electronic cigarettes, fast charging batteries,12V/48V Start/Stop batteries and jump starter for car, RC professional remote control models and toy , military and special equipment, etc. FULLYMAX batteries are also widely used in smart home like sweeping robots, vacuum cleaners, small power tools, etc.; 3C consumer electronics like remote control handles, beauty equipment, portable projectors, etc., smart Bluetooth products, medical equipment ,ect

Industry-leading high temperature & high power discharging capability

Outstanding gravimetric Energy density: max 280Wh/kg

Low IR, low temperature rising, low self-discharging

Longer cycle life：1C ≥1000 cycles , 100% DOD

Good consistency, stable performance

LCO（4.2V/4.35V/4.4V/4.45V）,LFP and NCM ,Flexible customized solution

Product Details

Place of Origin:

China

Brand Name:

FULLYMAX

Model Number:

FB4000-45C-7.4V-WB

User-defined Attribute

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

High Light:

2s 4000mah lipo FULLYMAX

7.4 v 4000mah battery

lithium ion rc battery

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 0

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

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

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

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 3 Product Feature

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

- 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

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

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

Packaging & Shipping

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

Regular Safety Packing Or As Customer's Requirements.

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

PAYMENT TERMS

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 9

EXPRESS OPTIONS

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 10

Packaging & Shipping

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

Regular Safety Packing Or As Customer's Requirements.

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

PAYMENT TERMS

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 9

EXPRESS OPTIONS

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 10

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 3 Manufacturing Capability

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

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

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

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

2S 45C 7.4 V 4000mah Battery Rechargeable Lithium Ion RC Model Battery 23

Performance Test Capability

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

FAQ

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

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.

LiFePO4 Battery

LCO Battery

NCM Battery

Research & Development Strength

Manufacturing Capability

Quality Management Syste

Supply Chain Capability

Exhibitions

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

2s 4000mah lipo FULLYMAX

7.4 v 4000mah battery

lithium ion rc battery