Ningbo Keqiang Battery Co., Ltd.: Ningbo, Zhejiang, China; Main products: Power Bank, smart bracelet, smart watch, Lithium lon batteries, Battery For Mobile phone

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Home > Products > Li-polymeride Power Bank > external battery charger , Li-po power bank ultra thin

external battery charger , Li-po power bank ultra thin

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US$ 3 - 4 / Piece

1 Piece(Min. Order)

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Product Details

Brand Name	KETRON	Model Number	KQS-8000BD
Use	Mobile Phone	Type	Electric
Place of Origin	Zhejiang, China

Product Description

external battery charger , Li-po power bank ultra thin

Our advantages:

1) We are factory: Good price & fast delivery.

2) We only do private tooling, A-grade polymer batteries, high quality materials & exquisite details.

3) Reliable quality with patent, CE, RoHS, FCC, C-Tick certificates.

4) OEM/ODM, customers design is welcome.

5) Excellent service, fast reply.

6) Sample order or trail order for test is acceptable.

Capacity	12000mah
Input	5V/1A
Output	5V/1A
Cell	Li-polymeride cell
About PCB	Over voltage ,over charge,over discharge,over current ,short circuit protection
About Cell	Ningbo Golden Orange cell which is best quality in china
Lifetime	≥500 times
OEM logo	yes ,but the quantity should pass 300pcs
Lead time	1-12 days

external battery charger , Li-po power bank ultra thin photos :

Company Information

KETRON was founded in 1995 and has been dedicating in assemled battery. Twenty-year technological accumulation makes us have the ability of good industrial resource integration and builds top-ranking product quality of KETRON. It is used as purpose of enterprice to provide clients fast and responsible service, ensure every client’s confidence on mobile power of KETRON with powerful service management and establish KETRON into high-quality brank of global battery industry carefully.
KETRON ensures each of products in the market only after strict multiple tests and tries its best to reduce maintenance opportunity based on quality philosophy of “quality service is the largest one”.
We selcect the high-quality components supplier,inspect each of stored equipments strictly and assure quality of KETRON at the sourse.
Each of our products stands up standard performance examination and operation of every technical process is in conformity with standard system of ISO9001.

Inspection Protocol

INSPECTION PROTOCOL AND QA FOR LITHIUM BATTERY

No.	unit	min	type	max	remark
charge	℃	0	25	45
discharge	℃	-20	25	65
storage	℃	-20	25	45	1 month
	℃	-20	25	35	6 months

Before storage, batteries should be charged to 40%-65% of full capacity

Characteristics testing:

item	test method	Requirements
Charging/Cut-off Voltage	4.20±0.01V
Discharge/Cut-off Voltage	3.00±0.01V
Standard Charge	Charge the battery at constant current of 0.2C to reach 4.2V. Then charge the battery at constant 4.2V voltage until , the charging current decreasing to 0.01C.	Charging time≤8h
Standard Discharge	After the standard charging,rest for 1 hour then discharge, to 3.0V 0.2c
Rate Discharge	After the standard charging,rest for 1 hour then discharge, to 3.0V 0.5C	Discharging time≥102Min
High Temperature Characteristics	Fully charging, store them at (55±2)℃ for 2 hours, then discharge to 3.0V @0.5C	Discharging time ≥102 Min , No transform, no explosion,no fire,no leakage
Low Temperature Characteristics	Full charging, store them at (-10±2)℃ for 16-24 hours, then discharge to 3.0V @0.2C	Discharging time ≥255 Min, No transform, no explosion,no fire,no leakage
Capacity retention	Fully charging, store them at (20±2)℃ for 28 days, then discharge to 3.0V 0.2C	Discharging time ≥255 Min, No transform, no explosion,no fire,no leakage
Cycle Life 25℃	Charge the battery @0.5C to reach 4.2V. Then charge the, battery at constant 4.2V voltage until the charging current, decreasing to 0.01C. Rest for 10 min. discharge to 3.0V 0.5C and rest for 10 min. Continue the charge/discharge cycles until discharge capacity lower than 80% of rated capacity	Cycle life ≥500
Storage	Charge the battery to 40%~65% of its rated capacity using, standard charging mode, then keep it in an 20℃±5℃, humidity 45%~85% room for 12 months. Discharge it 0.2C until voltage down to 3.0V	Discharge time ≥240Min

Environment Characteristics:

Item	Testing Method	Requirements
Hot & humidity testing	Full charging, store it at 40±2℃ with 90%~95RH% for 48 hours. Then put the battery at room temperature 20±2℃ for 2 hours. Then discharge to 3.0V 0.5C	Discharging time ≥72 Min no transform, No erosion, no explosion,no fire,no leakage
Vibration	After Standard Charging,fixed the battery to vibration table,then subjected to vibration test for 30 minutes per axis of XYZ axes	No explosion,no fire, no leakage. Voltage≥3.7V.
Shock test	After Standard Charging,test condition Acceleration :100m/s2 Crash time per min: 40-80 times, Pulse lasting time : 16ms , Shock times : 1000±10times	No explosion, no fire, no leakage. Voltage≥3.7V.
Drop Test	After standard charging , drop the battery from 100cm, height onto a 18mm~20mm thick hardwood. Two sides of X,Y,Z directions each (total 6 times) After the drop test, discharge the battery 0.5C to 3.0V Then charge it 0.5C to full capacity. Continue the test within 3 times the battery should reach the target once	Discharging time ≥102 Min No erosion, no explosion,no fire,no leakage

Safety Performance

Overcharge protection test	After standard charging. Apply a 7.4V stable Voltage and 1C stable current to the battery for 8 hours	No fire, no explosion
Over discharge protection test	After discharged to the cut-off voltage,the battery shall be subjected to a short-circuit condition with a load of resistance less than 30Ω for 24 hours	No fire, no explosion
Short circuiting protection test	After standard charging,the battery shall be subjected to a short-circuit condition with a wire of resistance less than 100mΩ for 1 hour. Cut off the circuit, Charge the battery with constant current at 1.0C for 5s	No fire, no explosion, Voltage≥3.7V
Impact Test	After standard charge,Place the battery on a flat surface. A 9.1 kg article is to be dropped from a height of 100cm onto the sample. The battery is allowed to transform	No fire, no explosion
Heating Test	After standard charging,a battery is to be heated in an oven convection or circulating air oven. The temperature of the oven is to be raised at a rate of 5±2℃/min to a temperature of 130±2℃ and last for 30 minutes.	No fire, no explosion
Over charge	After standard charging, put the battery in fume hood. Add constant voltage & current 4.8V 3C to the battery. Charging it until the battery reaches 4.8V, charging current decreases to almost 0A. Record the temperature curve of the battery. When the battery temperature decreases to about 10℃ lower after reaching the peak temperature. End the test. This test is performed without PCM	No fire, no explosion
Short circuiting test	After standard charging, put the battery in fume hood. Connect the Negative Pole and Positive pole directly. (the wire’s resistance should below 50mΩ. Record the battery’s temperature curve during the test. When the battery temperature decreases to about 10℃ lower after reaching the peak temperature. End the test. This test is performed without PCM	No fire, no explosion

Our Services

K-1; From design/ sketch to shipment/ delivery, one-stop service offered;

K-2: On-time delivery:we offer 7 days for production or 2-5 days when you asking urgent;

K-3: Efficient feedback:any questions or needing, you'll be replied within 24hours no matter we can or cannot;

K-4: warranty:you're guarantted to buy from us, any defects will be replaced or funds returned;

K-5: Win-Win transaction:our professional customer representatives dedicated to make each potential client to experience an enjoyable buying trip.

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Factory Photos 2014

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Buyer Feedback

Any questions ,fell free to call :+86 13165939787 contact person :kobe chen skype:powerbank1990 wechat:13165939787

Contact Us

Ningbo Keqiang Battery Co., Ltd.: Contact namekobe chen
Chat Now; Phone86-574- 65152044; Addressdajiahe industrial zone,ninghai , Ningbo, Zhejiang

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Product Categories

10000-20000mah Li-ion Power Bank	10400mah Li-ion Power Bank	2600mah Li-ion Power Bank	5200mah Li-ion Power Bank
7800mah Li-ion Power Bank	Cartoon Power Bank	Jump Starter	Li-polymeride Power Bank
New Products	power bank mainpage	Smart Bracelet	Solar Power Bank
Youxin Stationary

external battery charger , Li-po power bank ultra thin

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