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3.7V 4.2V 4000mAh Polymer Lithium Ion Batteries for model airplane

Specifications

Brand Name :

TAC

Model Number :

9042125HP-4000MAH 3.7V

Certification :

IEC62133, UL1642 ,ROHS

Place of Origin :

guangzhou

MOQ :

500pcs

Price :

USD8-9

Payment Terms :

T/T

Supply Ability :

100000pcs

Delivery Time :

15-20day after order

Packaging Details :

carton packaging

Nominal Voltage :

3.7V

Nominal Capacity :

4000mAh

Type :

Li-Ion Polymer

Packing: :

PVC Packing

Size :

9.0*42*125mm

pack :

2S 3S 4S 6S

Discharger current :

40C

Max discharger :

80C

PVC :

Blue \ black or OEM

Brand :

Tac or OEM

Description

Prismatic Pouch Cells High Power 3.7V 4.2V 4000mAh Battery for Model Airplane

Specification For Prismatic pouch cells high power 3.7V 4.2V 4000mAh battery for model airplane

Items	Specification	Remark
Capacity	4Ah	0.2C Standard discharge
Nominal Voltage	3.7V	Mean Operation Voltage
Voltage at end of Discharge	3.0V	Discharge Cut-off Voltage
Charge Voltage	4.2V±0.03V	By standard charge method
Cell Internal Impedance	≤300Ω	IEC standard
Maximum charge current	40C	For continuous charging mod
Maximum discharge current	80C	For continuous discharge mod
Operation Temperature Range	Charge:0~45℃	60±25%R.H. Bare Cell
	Discharge:-20~60℃	60±25%R.H. Bare Cell
Storage Temperature Range	Less than 1 year: -20~25℃	60±25%R.H. at the shipment state
	less than 3 months: -20~40℃	60±25%R.H. at the shipment state
Weight	Approx: 8g	Finished Cell
Pack Dimension	Height 42mm*Width125mm Thickness 9 mm	max

Initial Performance Test

Item

Test Method and Condition

Requirements

Open-Circuit

Voltage

The open-circuit voltage shall be measured within 24 hours after standard charge.

≥3.7V

Internal impedance

Internal resistance measured at AC 1KHz after 50% charge.

≤12mΩ

Minimal Rated

Capacity

The capacity on 0.2C5A discharge till the voltage tapered to 2V shall be measured after rested for 30min then finish standard charge.

Discharge Capacity

≥4000mAh

Temperature Dependence of discharge capacity

Cells shall be charged per table 1 and discharged @0.2C₅A to 2 volts. Except to be discharged at temperatures per Table 4. Cells shall be stored for 3 hours at the test temperature prior to discharging and then shall be discharged at the test temperature. The capacity of a cell at each temperature shall be compared to the capacity achieved at 23 ºC and the percentage shall be calculated. Each cell shall meet or exceed the requirements of Table 4.

Handling of Cells

Consideration of strength of film package

Soft Aluminium foil

Easily damaged by sharp edge parts such as pins and needles, Ni-tabs, comparing with metal-

can-cased LIB.

Sealed edge may be damaged by heat above 100°C, bend or fold sealed edge.

Prohibition short circuit

Never make short circuit cell.

It generates very high current which causes heating of the cells

may cause electrolyte leakage, gassing or explosion that are very dangerous.

The LIP tabs may be easily short-circuited by putting them on conductive surface.

An appropriate circuitry with PCM shall be employed to protect accidental short circuit of the

battery pack.

LIP cells have less mechanical endurance than metal-can-cased LIB.

Falling, hitting, bending, etc. may cause degradation of LIP characteristics.

Handling of tabs

The battery tabs are not so stubborn especially for aluminum tab.

Don’t bend tab.

Do not bend tabs unnecessarily.