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Specifications
5000mAh power bank best winter gifts for girls1.Aspect as Dressing Box
2.low price
5000mAh power bank best winter gifts for girls
Power Bank Advantage: 1.Over-charge protection, discharge protection, over-current protection, short circuit protection 2.Hardware and software design with cutting-edge technology 3.Synchronous Rectification technology makes power efficient more than 95%, while the others’ power efficient lower than 90% 4.Heat-sink stick keeps PCB temperature low 5.Long cycle life, Rapid charge
| Battery Capacity | 5000mAh colorful and pretty USB universal portable power bank |
| Battery Cell Type | Polymer Li-ion battery cell |
| Rated Input | 5.1V/800mAh |
| Rated Output | 5.0V/800mAh |
| Self-Charging Time | 2-3 hours |
| Fully Charging Iphone | 3-4 times ( Iphone battery 1420mAh) |
| Recharge Cycles | Charge to 100% Up to 500 times |
| LED Indicators | 1 battery capacity level LED indicators |
| LED Torch | YES |
| Protection Functions | Built-in protection functions for short circuit, over charge/discharge; |
| Attached Connectors | Micro Mini USB |
| Devices Supported | Mobile phones, MP3 players, MP4 players, PDAs, digital cameras, handheld game consoles, Bluetooth devices and so on. |
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 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 |
|
Standard Cell Technical Specification Summary | |||
Nominal Voltage |
3.7V |
Cell Voltage is between 3.6v--3.9v when shipped |
|
Capacity range |
100mah-1,999mah |
|
|
charge |
MAX charge voltage |
4.2 |
Cell Voltage is between 3.6v--3.9v when shipped |
MAX charge current |
1.0C |
||
Charging method |
Constant current/voltage |
Standard charge:0.2c @4.2v |
|
Constant current/voltage |
Standard charge:0.5c @4.2v |
||
Discharge |
Min Discharge voltage |
2.75 |
|
Max Discharge Current |
1.0Cmin |
Cells can be manufactured to discharge rates of up to 2.0c ,see high discharge series cells for more information |
|
Self Discharge |
Residual Capacity |
>97% |
After standard charging,stored at 25 @0.2C/2.75V |
Operating Temp(C) |
Discharge |
-10℃ +60℃ |
Higher and Lower temperatures are achievable to order |
charge |
0℃ +45℃ |
||
Storage Temp (C) |
-10℃ +45℃ |
|
|
Cycle Life (Number of cycles) |
Minimum |
300 |
One cycle relates to one charge period to 0.2C/4.2V-then one discharge period to 0.2C/2.75V.the cycle life rating is when the discharge capacity is at 80% of the rated capacity |
Typical |
500 |
||
|
|
K1:Professional factory directly sale all over the wrold. we can produce various capacity mobile power bank according to customer's requirements.
K2: Customized packing and customer's logo are accepted.
K3:Faster delivery: 3~5 days.
K4:Accept various transportation ways. like by express, by sea, by air and also specified freight company.
K5:Easy to use, light weight, compact design, convenient to carry, great for gift set, outages, emergencies, business trip and more.
Any questions ,fell free to call :+86 13165939787 contact person :kobe chen skype:powerbank1990 wechat:13165939787
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