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Li-Polymer Battery AS552035 3.7v 350mAh Rechargeable Li-Polymer Battery 500 Deep Cycles for IOT Device
with UL1642/UL2054/CE/CB/UN38.3/WERCS LiPo Battery Wholesale Supplier
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Parameters
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Common Applications
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Other Products
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Handling Precautions & Guidelines
Parameters

Norminal Capacity: 350mAh

Rated Voltage: 3.7V

Weight: 7g

Dimensions (mm): 5.7*20.5*37.5mm

lmpedance: ≤320mΩ

Standard Charge/Discharge: 0.2C

Max Charge/Discharge: 350mA 1.0CmA

Peak Discharge: 1.0CmA

Charge Temp: 0~+40°C

Discharge Temp: -20~+60°C
AS552035 Li Po Batteries Product Parameters:
Item项目 | Rating参数 | Note标注 | ||
---|---|---|---|---|
1.1 |
Capacity容量 |
Typical 标称容量 | 350 mAh |
Temperature/温度:25±5℃
Charge/充电:0.2C
Discharge/放电:0.2C |
Minimum 最小容量 | 330 mAh | |||
1.2 | Nominal Voltage 标称电压 | Average 3.7V | ||
1.3 |
AC Impedance Resistance 内阻 |
≤120mΩ | Cell | |
≤320mΩ | Battery Pack | |||
1.4 |
Discharge Cut-off Voltage 放电截止电压 |
3.0V | ||
1.5 | Charge voltage 充电限制电压 | 4.2V | Cut-off current≤3.5mA | |
1.6 |
Max Charge Continuous 最大充电电流 |
350mA | +10~+45℃ | |
1.7 |
Max Discharge Continuous 最大连续放电 |
350mA | +10~+45℃ | |
1.8 | Weight/重量 | Weight/重量 | Approx 7g | |
1.9 | Cycle Life循环寿命 | 500 cycles | Capacity≥80% | |
1.10 | Shipping Voltage/出厂电压 | 3.85-3.95V | ||
1.11 |
Operating Temperature 工作温度 |
Charge充电 |
0~+45℃ | Max Charge:70mA |
+10~+45℃ | Max Charge:350mA | |||
Discharge放电 | -20~+60℃ | |||
Model Name/型号: A&S 552035 |
Battery size (T*W*H): 5.7 * 20.5 * 37.5mm | Wire(L):40±3mm (UL3302 26#) | Connector: SHR-03V-S-B | |
Overcharge detection voltage过充电检测电压: 4.255--4.305V | |||
Overdischarge detection voltage过放电检测电压: 2.950--3.050V | |||
Overcurrent protection current过电流保护电流: 1~3.0A | |||
NTC:10K,B=3435±1% | |||
IC: DAA |

Cooperation Case
Successfully cooperated with Mitel brand on bluetooth headphone project
Client Background
Project name: 552035 3.7V 350mAh lipo battery are used in Mitel 6940 IP phone and spare bluetooth headset.
We started to contact with Mitel on Nov. 22th, 2014. They sent us an inquiry about 3.7V 350mAh-450mAh lithium polymer battery used in their developing bluetooth headset project.
Cooperation Details
The battery need to be with UL and IEC62133 certificate approval, and the size should be within T = 6.2mm (max), W = 22mm (max), H = 41mm (can be longer if needed) . As per their requirements, we suggest our ready UL1642 cell model 552035 3.7V 350mAh, which will save much UL1642 certificate fee for our customer. Mitel accept our suggestion, but they also need the battery pack with UL2054 certificate.
According to our cooperation experience with Philips over 5 years and international common practice, lipo battery doesn’t need to make UL2054 certificate as it’s just a part of finished products for US market if the cell has UL1642 approved. We advised them that this certificate is not necessary, but they still insist on making UL2054 certificate for 552035 3.7V 350mAh lipo battery pack, even though the high expensive certificate fee of UL2054.
Outcome & Value
During the past 2 years, we continued to provide several battery samples for Mitel to develop their IP phone and bluetooth headset project. They tested our battery samples and satisfied with our battery quality. But they suspend this project about 1 year.
In November 2015, they re-started the project and we received our vendor number: 148688. Then we arranged another battery samples for their final design. At the begining of 2016, they paid the certificate fees and request us to make the following battery certificates, like UL2054, IEC62133, ROHS, REACH, UN38.3 etc. UL2054 testing is very strictly and request battery with high quality. It took about half past 2 month to finish UL2054 certificate. After all certificates finished, Mitel start their trial production in July, 2016. In August, they recommend their partner Flextronics to us, and we also become Flextronics Supplier in China (our Flextronics BP Code: SPS03130U).

Even though it’s long time for developing a new project, but we have confidence for our clients and do our best to offer a good service and best solution for them.
Cooperation Case
Successfully cooperated with Flex brand on Bluetooth Handset Battery Project
Client Background
Project name : 552035 3.7v 350mAh lithium polymer battery used in Flex Bluetooth bluetooth handset .Detailed introduction : We got an inquiry from Flex International Ltd which is a leading company in Electronic Manufacturing Service in global market .
Cooperation Details
After communication , we got to know that it was our regular customer Mitel introduced our company to them . Flex was going to promote their latest bluetooth handset to global market and they needed 552035 3.7V 350mAh handset bluetooth battery.They were very glad to know that our 552035 lithium polymer battery has UL2054 and CB certificates . They asked several samples for testing . A few days later , they told us that they were very satisfied with the quality of our samples and they decided to cooperated with our company for this project.
Outcome & Value
Finally , this cooperation turned out to be a great success for both companies . They said to me “ your company Shenzhen A&S Power is really a reliable supplier and great business partner . We are looking forward to cooperate with your company again soon .”
So this pleasant cooperation was a great start for our long term business relationship with Flex . After this cooperation , we have cooperated with each other for some other successful projects.
Cooperation Case
IP Phone Collaboration - AS552035 3.7V 350mAh
Client Background
Our collaboration with Mitel dates back many years. At that time, the customer contacted us seeking a custom battery for their new IP phone, intended as a backup power source. They also desired to enhance the device’s portability and flexibility to meet diverse user scenarios.
Solution
We understood that stability and safety were crucial for a backup power source. Through in-depth discussions with the customer’s team, we recommended our certified model, the AS552035 3.7V 350mAh battery.Importantly, we equipped it with a PTC self-resetting fuse function, providing additional protection against overcurrent and short circuits, thereby adding an extra layer of safety for the device.
Outcome & Value
After undergoing multiple tests, Mitel ultimately selected our battery. This battery continues to operate reliably in several of their IP phone models, consistently providing backup power support. Simultaneously, the battery’s certifications have been continuously enhanced and now include UL2054, CB, UN38.3, WERCS, and CE, ensuring compliance and facilitating market entry globally.
This successful collaboration with Mitel not only strengthened our long-term partnership but also significantly boosted the expansion of our business. It laid the foundation for our subsequent successful partnerships with other renowned companies like Flex and Wistron.
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Performance
1 Standard Test Conditions
Test should be conducted with new batteries within one month after shipment from our factory and the cells shall not be cycled more than five times before the test. Unless otherwise defined, test and measurement shall be done under temperature of 25±2℃ and relative humidity of 45~85%. The test results are not affected evidently by such conditions of temperature 15~30℃ or humidity 25~85%RH.5.2 Measuring Instrument or Apparatus.
2 Measuring Instrument or Apparatus
2.1 Dimension Measuring Instrument
The dimension measurement shall be implemented by instruments with equal or more precision scale
of 0.01mm.
A&S Power Battery with Terminations, Pins, Tags
Battery is always available with different types of terminations, i.e. PC pins, tabs, solder tabs, leads, wire, cable and connectors. We hope you find the one in our product list and suite you the best. If not, our Customer Service can assist you to find one, or offer custom-made terminations to meet meet your specifications.
Custom Battery Pack
We manufacture custom battery pack assembly for electronic, industry and OEM business for decades. We are proud to serve our customers, some of them are world's most prominent companies, with engineering design, prototype, in-house testing, certifications, and mass-production. Our Customer Service can help for engineering suggestion to meet your specification.
A&S Power Battery Quality Control & Compliance
Check A&S Power Manufacturing site and product compliance.
Safety Handling and Product Design with A&S Power Lithium Battery
Handling Lithium Battery Safely.
Production Equipments

Automatic Rolling Machine

Electrolyte Injecting Machine

Automatic Tape Sticking Machine

Automatic Slitting Machine

Fully Automatic Tablet Making Machine

Aluminum-Plastic Film Punching Machine

Ultra High Vacuum Baking Machine

Thermoforming
Partnerships |
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Our Service
• Your inquiry related to our product & price will be replied within 24hours.
• Well-trained & experienced staff are to answer all your inquiries professional in English of course.
• OEM is highly welcomed. We have strong R&D team here to help.
• Your business relationship with us will be confidential to any third party.
• 1 year warranty of products and good after-sale service offered, please get back if you got question.
Contact Us
Shenzhen A&S Power Technology Co., Ltd
Tel: +86-0755-28169348
Fax:+86-0755-84157385
E-mail: info@szaspower.com
sales@szaspower.com
Address: Rm1312,A Block,Weidonglong Business Building,No.194 Meilong Rd,Longhua,Shenzhen,Guangdong,518109,CHINA
Our website lists just some of the products we have
successfully supplied,but please note this is just
representative and an example of our products&service,
so,if you cannot see the product you are looking for, please contact us today!!!
Li-Polymer Battery Applications
Other Li-Polymer Battery
Model No. | images | Voltage [V] | Capacity [mAh] | Thickness [mm] | Width [mm] | Length [mm] | Weight [g] |
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3.7v
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750
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6.2
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30.5
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42.5
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15.5
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3.7v
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850
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5.7
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36.5
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42.5
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16
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3.8v
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1800
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5.2
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50.5
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56.5
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34
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3.7v
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5000
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6
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60
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115
|
95
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3.7v
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1200
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7.5
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30
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48
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22.5
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3.7v
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1050
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6.2
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34.5
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52.5
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20.5
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3.7v
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800
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8.2
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30.5
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37
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15.8
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7.4v
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1600
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11.5
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51
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61.5
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62
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3.7v
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1200
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6.2
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40.5
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48.5
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22
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3.7v
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3000
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17.5
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34.5
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53
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55
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3.7v
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350
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6.7
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20.5
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32.5
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7.0
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3.7v
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1000
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6.2
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26.5
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65.5
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19
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3.7v
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500
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7.2
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20.5
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42.5
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9.5
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3.7v
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900
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6.2
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30.5
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50.5
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18
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3.7v
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540
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5.7
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25.5
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42.5
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11
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3.7v
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1500
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8.7
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34.5
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52.5
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30
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3.7v
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130
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8.5
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\\
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35.5
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3
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3.7v
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160
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5.2
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12.5
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37.5
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3.5
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3.7v
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520
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6.2
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31
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32.5
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10
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3.7v
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80
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4.2
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10.5
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32.5
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1.8
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3.7v
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200
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4.8
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17.5
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32.5
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4
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3.7v
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500
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5
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22.5
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50.5
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11
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3.7v
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58
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10.3
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10.3
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12.3
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1.2
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3.7v
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950
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5.7
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34.5
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46.5
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18.5
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3.7v
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60
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4.2
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11.5
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22.5
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1.5
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3.7v
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430
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5.2
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31
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32.5
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8
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3.7v
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85
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10.3
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10.3
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18.9
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1.6
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3.7v
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10000
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11.2
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62.5
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103
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180
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3.7v
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1000
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7.2
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34.5
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42.5
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19
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3.7v
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5400
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12.5
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64
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66
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91
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3.7v
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550
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3.7
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27.5
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31.5
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5
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3.7v
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240
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3.4
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26.5
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28.0
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4.5
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3.7v
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1100
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10.3
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10.3
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18.3
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23
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3.7v
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250
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6.2
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5.5
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32.5
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5.5
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3.7v
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500
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6.2
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15.5
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32.5
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5.5
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3.7v
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200
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4.2
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25.5
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27
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4.5
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3.7v
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700
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10.2
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20.5
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47.5
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13
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3.7v
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1000
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10.2
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30.5
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37.5
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18
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3.7v
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500
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6.2
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25.5
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37.5
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11
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3.7v
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600
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10.2
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22.5
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33.5
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11.5
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Handling Precautions & Guidelines
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Can I have some samples for testing quality?
Yes you can buy some samples of any our products for testing quality and market.
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How should I pay?
You can pay via T/TL/C at sightWestern Union Cash etc. 100% T/T in advance for samples. For large quantities 30% T/T in advance as soon as order confirmed and the balance before shipping via T/T or L/C etc. If you prefer other payment terms please contac
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Can the Lithium Battery be Customized?
Yes we provide tailored solutions to meet our customers' precise needs. Our customization options include size capacity voltage maximum discharge rate and other parameters. Contact us to explore how we can create a battery solution that fits your requirements perfectly.
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What is delivery time if we place an order?
It depends order quantities. Usually we can deliver goods within 3 -5 working days for small orders for more QTY. order let's confirm when you place official order.
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Are you factory?
We have factories both in Dongguan China. The factory covers an area of 8000㎡ Has 500 employees And 25 R&D engineers.We can produce 100000 lithium batteries every dayThe factory has passed SGS & TUV QMS certification.