Happy New Year!

Happy New Year to all the workers in Chanda, and to all our customers and our friends!

May 2019 bring with it all things beautiful and lovely. Have a wonderful New Year!

Chanda Lithium Ion Rechargeable Battery

Chanda Lithium Ion Rechargeable Battery 

                   18650-2.5Ah-4S7P  

                    Li-ion battery pack 14.4V 17Ah

                    Max. charging current: 5A

                    Max. continuous discharge current: 15A

                   Battery pack dimension:105*145*80mm 

                   Applications: portable power supply, solar storage...

                   Cell: UL1642 approved

                   Factory ISO9001:2015 approved

Accept OEM & ODM battery packs

Contact us at admin@chandaenergy.com 

Ltihium Ion OEM & ODM battery packs from Chanda Energy Co., Ltd.

Chanda Lithium Ion Rechargeable Battery 

                   18650-2.5Ah-3S8P  

                    Li-ion battery pack 10.8V 20Ah

                    Max. charging current: 5A

                    Max. continuous discharge current: 10A

                   Battery pack dimension: 95*180*80mm 

                   Applications: portable power supply, solar storage...

                   Cell: UL1642 approved
                   Factory ISO9001:2015 approved

We can do various OEM battery packs as customers' requirement. OEM & ODM welcome to us!

Welcome to contact us at admin@chandaenergy.com 

Low Temperature Lithium ion Polymer battery

Low Temperature Lithium ion Polymer battery

Model: CND-753048PL 

 

Low Temperature Lithium-ion polymer battery
3.7V 1100mAh Single cell
Cell weight about: 22gSize about (per battery): 7.6*30.5*49mmStandard charge current: 0.2CQuick charge current: 0.5CStandard discharge current: 0.2CQuick discharge current: 0.5C Charge voltage: 4.2V Discharge cut off voltage: 2.5V 

Temperature Performance:
at + 50ºC and 0.2CmA, discharge capacity 》90%
at + 25ºC and 0.2CmA, discharge capacity 》100%
at  -40ºC at 0.2CmA, discharge capacity 》60%
Low temperature performance
After standard charge at 25ºC,
Put the cell into -40±2℃ low temp oven for 4 hours and discharge at 0.2C CC to 2.5V at the low temperature
The discharge capacity is 》60%

                            
Operation Temperature:
Charge temperature: 0~45ºCDischarge temperature: -40~ + 55ºC
Storage temperature: 
           -20~40 ºC within one month
           0~35ºC within 3 months
           20ºC~25ºC for more than 3 months at partial charged state
Cycle life: 》 300 times at 0.5C, no less than 80% of initial capacity

Application: products used in lower temperature...

Welcome to contact us at linda@chandaenergy.com  or www.chandaenergy.com 

Low Temperature Lithium ion battery

CND-18650CL

Low Temperature Lithium ion battery 
3.7V 2200mAh/2400mAh/2600mAh Single cell

Cell weight about: 42gSize about (per battery): dia: 18.5* Height: 65.5mm Max.Standard charge current: 0.2CQuick charge current: 0.5CMax. charge current:1CStandard discharge current: 0.2CQuick discharge current: 0.5C Max. discharge current: 1C
Charge voltage: 4.2V Discharge cut off voltage: 2.5V 

Temperature Performance:
at + 50ºC and 0.2CmA, discharge capacity 》90%
at + 25ºC and 0.2CmA, discharge capacity 》100%
at  -40ºC at 0.2CmA, discharge capacity 》85%
Low temperature performance
After standard charge at 25ºC,
Put the cell into -40±2℃ low temp oven for 4 hours and discharge at 0.2C CC to 2.5V at the low temperature
The discharge capacity is 》85%

Operation Temperature:
Charge temperature: 0~45ºCDischarge temperature: -40~ + 60ºC
Storage temperature: 
           -20~40 ºC within one month
           0~35ºC within 3 months
           20ºC~25ºC for more than 3 months at partial charged state
Cycle life: 》 300 times at 0.5C, no less than 80% of initial capacity

Application: products used in lower temperature...

Welcome to contact us at linda@chandaenergy.com for more details. Or visit us at www.chandaenergy.com 

                   Chanda Lithium Battery Assembling Lines

Electric Scooter / Motorcycle battery LifePO4 96V 20Ah module

Electric Scooter / Motorcycle battery LifePO4 96V 20Ah module 

Chanda can support our customers to design various battery packs as customer's requirement.  We not only produce battery packs we also provide solutions to them, provide suggestion during developing new project so as to assure the battery exactly matching the devices, and avoid future potential problems. 

With our skilled sales and engineers' support, you will feel so easy to communicate with us and get the project done smoothly.

Pls contact us at admin@chandanergy.com or linda@chandaenergy.com 

We will come to you timely

Thank you

Chanda Energy Co., Limited.  

 

Want to see how the Inside structure of battery packs? Here's some of the pictures for your reference:

Contact us for more details or battery solutions at www.chandaenergy.com or admin@chandaenergy.com   

Chanda Battery Products for reference

Chanda can make various OEM & ODM battery packs as our customer's requirements. The below are one of our production products for reference.
Welcome to contact us for any battery solution:

Battery wait for spot welding by machine:

Battery spot welded by machine:

Semi-completed battery pack after spot welding:

 Semi-completed battery pack after spot welding:

Lithium ion battery with plastic case and IC guage:

We can provide a wide selection of single cells including LG, Samsung, Sanyo, Panasonics.. and also BAK, Lishen, DLG... China factories 

We can provide various solutions based on your requirement with cost effective products. Quality is guaranteed. And you can always depend on our quality service and technical support. 

Welcome to contact us at admin@chandaenergy.com 

Chanda Automatic Spot Welding Machine for power battery packs. Welcome to visit us!

Chanda Automatic Spot Welding Machine for power battery packs. Welcome to visit us!

Chanda Energy Co., Limited 

www.chandaenergy.com

Email: admin@chandaenergy.com 

How a lithium battery pack produced?

Have you ever seen how a battery pack is produced and inspected? Below we listed the import procedures and show you for better understanding. 1. Incoming materials' inspection (other materials inspection not shown out here)

Below is for BMS inspection by BMS testing machine (16S )

Below is for the single cell matching before assembling

2. Get the cells configured in one pack and waiting for spot welding:

3. Single cell spot welding (here QC will check the spot function is strong enough and do the pull-up testing)

4. After putting PVC, and Semi-completed battery pack performance inspection for over-charge, over-discharge, over-current, short-circuit, ...ect protection

5. Aging / Cycling test (semi-completed battery pack) Remark: Not so many factories do the aging test for all the battery packs

Advantages by doing aging test: can find problems during this test, such as cells are not in

  good matching, lower voltage, lower capacity, BMS functions...ect.

Can avoiding problems: Batteries after some time using, it can avoid problems like lower

voltage, lower capacity, can not be charged full, discharge time shorter or cannot be charged ...etc.

6. After aging test, store the batteries by 3~7 days to see the voltage drop to assure the battery pack performance. 

       

  

7. further measuring the battery's voltage by each series to assure the battery cells are well matched after storage:

8. Battery Pack PVC heat shrinking

The below is first layer of PVC shrinking. It will be heat shrink two layers.

9. Completed battery pack

10. Appearance Inspection, and final functional performance checking by 100%

11. Packing and shipent

12.  Wooden Pallet Packing 

After the above strictly controlling of the battery pack quality, we are proud we can control the battery funcational diffective rate within 0.3%.

Chanda can provide battery solutions as customer's requirement and produce various OEM battery packs by using different chemistry such as lithium ion, LifePo4 ...etc. Welcome to contact us. You can always depend on our quality service and quality goods! 

www.chandaenergy.com

email: admin@chandaenergy.com

Contact: Ms. Linda email: linda@chandaenergy.com

Meet a price issue in the hard competition? Below ways may help you!

Nowadays, with B2C's flourishing like Amazon, Ebay, Alipress,, many products have been directly sold to end users while many of the middle sale's channels like distributors, importers, agent..etc have been cut off.  This makes more & more companies with traditional sale's channels are meeting heavier pressure in price.  It's seen many of the companies have made the changes in the sales channels, such as updated company website as an online shop, set up shop on Amazon...etc. try to meet the current trend.

Actually many of the consumer electronic products need a battery to provide power and make it work. 

Battery is just a component for an electronic product.  However, it's very important part, 

without it, the product can not work and it takes a quite part of the whole product cost. 

Hence, to choose a suitable battery, cost effective with good performance is very important. When designing a new product, it's better to check with the battery supplier first and try to select a suitable solution in order to get the quality goods with competitive price.  

 Here some of the ways help you save battery cost:

1. 18650 cylindrical battery 3.6V 2000mAh~2200mAh

Among the Lithium-ion cells, the 18650 cell is a good choice, it can provide higher power energy while the cost is very low. And the demand in the market is very big, so you can always no worry about the MOQ. 

The short-coming is the size. Its diameter is about 19. Length about 69mm. If the size is no problem, the best cost effective way is to consider 18650 cells. 

2. BL-5C , BL-4C ...etc  previous Nokia mobile batteries

BL-5C, BL-4C were the most popular items in the past for the Nokia mobile phones, the prismatic cells and production procedures are both very very cost effective.  Now many of other electronic products are still adopting BL-5C, BL-4C as the power supply, like the old man mobile phones, wireless speakers... 

BL-5C capacity available from 600mAh~1100mAh.  Price varies with different capacity.！

BL-4C capacity available from 500mAh~800mAh. Price varies with different capacity. 

3.   Polymer cell 523450P-3.6V 950mAh~1000mAh
This lithium-polymer battery is cost-effective if qty is big 

4. 103450P 3.6V 1800mAh
This lithium-polymer battery is cost-effective if qty is big. 

Note:  the above recommendations are based on consumer electronic application.  Different applications have different requirement for the battery.  It's better to consult with the battery supplier during designing your new product to get the best solution!

If interested in how the BL-5C, BL-4C is produced, pls see the blogger:  
http://chandaenergy.blogspot.com/2018/05/bl-5c-bl-4c-produced-by-automatic.html

Battery replacement for Iphone, LG, Samsung, Huawei...ect

Chanda is producing a full series of smart phone battery replacement for Iphone, LG, Samsung, Huawei, ZTE, also produce universal batteries for those old phones.

Battery replacement for Iphone is from 4G, 4S, 5G, 5S, 6P, 6S, 6S plus, 7G, 7 Plus.

All the batteries use grade A cells for assembling. All of the batteries' communication checked by computer 100% one by one.

Battery communication checking by computer:

All the batteries welding is by laser welding:

Below are some of the battery models for reference:

Welcome to contact us at linda@chandaenergy.com, or visit our website: www.chandaenergy.com