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DC 1S2P diy li ion battery pack red / black wire 4000mAh Battery Pack

DC 1S2P diy li ion battery pack red / black wire 4000mAh Battery Pack

DC 1S2P diy li ion battery pack red / black wire 4000mAh Battery Pack

Product Details:

Place of Origin: China(Shenzhen)
Brand Name: DELONG
Certification: CE/ROHS/etc
Model Number: DEL-DC3740

Payment & Shipping Terms:

Minimum Order Quantity: 100 units
Packaging Details: Standard Export Package
Payment Terms: T/T, Western Union, Paypal
Supply Ability: 10000 units per day
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Detailed Product Description
Model: DEL-3740 Nominal Voltage: 3.7v Or Other
Nominal Capacity: 4000mAh Size: Custom
Weight: About 95g Battery Type: 18650 Lithium-ion Cell
Connector: Custom Or Red/black Wire Switch/indicator: Available


DC 1S2P diy li ion battery pack red / black wire 4000mAh Battery Pack





model DEL-37400
Type Li-ion battery pack with red/black wire
Battery Cells A Grade quality 18650 battery
Nominal voltage 3.7v 1S2P
Capacity 4AH/customized
Input 4.2v
Out-put 3-4.2V
Max continuous charge/discharge current adjustable
Charger Included charger:US plug/EU plug/UK plug
Connectors Custom
Protection 2S PCM,over-charge/discharge protection, over-heat protection
Recharge cycle More than 500 times
LED  Indicator Available 
ON/OFF Switch Available 
Key word 3.7v battery
Standard Charge Time Around 1hour
Dimension  as your requirement
Operating temperature -20 °C to 60 °C 
Charge temperature -0 °C to 45 °C
Storage temperature -20 °C to 45 °C
Operating humidity 5% to 90%,non-condensing
Applications Led light, spot light, flashlight, portable DVD, Speaker, power bank, clock, Medical device, industory equipment,traffic indicator light, cameras, DV, toys, GPS, Cameras, interphone, alarm system, Pos machine,communicate equipement, IC terminal, eletric lock, wireless dishes ordering set, etc.






1.long discharge platform

2.Low inner resistance

3.Long cycle life

4.low self-discharge

5.CE/RoHs/UL/SGS/MSDS certificate

6. Low price

7. Fast lead time



Suitable to cordless phone, solar lighting, electrical drill, shaver, emergency lighting, back-up power,cordless tool, power tool, flashlight, torch etc…

Packaging & Shipping:

(1) Samples checking: sending by Express ( DHL / UPS / FEDEX/ TNT ,by air)

(2) Bulk production: sending out by cargo shipping / air/freight / Express

(DHL/UPS/FedEx/TNT),or we can accept other shipping terms according to

your requirements.

(3) We are not responsible for any accidents, delays or other issues that are

caused by the shipping.

Our Services:

1.Professional lithium-ion battery manufacturer for 8 years experience,have own factory.
2.Strong R&d team to support.
3.BMS solution come from NSK and Recoh.
4.Offer OEM service for customer, small order also accepted.
5.Quick action & respond.
6.Competitive price and Best service before/during/after sales.




Company Information:

Shenzhen Delong Energy Technology Co., Ltd. , is a professional lithium battery

manufacturer and we have almost 8 years experience of manufacturing, developing

and exporting products.

We are specializing in Kinds of lithium ion polymer battery, lithium ion battery,

18650 battery pack, power bank etc, and we also offer one-stop battery solution for you!


Hoping to have more chances to serve you with our best !






1.   Q:  Can i get some samples for test?

      A  : Of course, the sample is available for test.


2.  Q:  Can i produce the battery pack whatever i asked for ?

     A: Yes, we can customize the battery pack according to your requirement.


3.  Q: The capacity of battery pack is real,right?

     A: Yes, all of our products are used by the A grade 18650 cell which has the real capacity, if need, we             can also use the samsung 18650 cells to customize the battery pack.

4.  Q: Can we use the lithium polymer cell to customize the battery pack?

     A: Of course yes. Tell me your special requirement, such as the dimension, continue current, weight,               charging time, and so on, we will design the battery which can be best suitable for your project. 







Contact Details
Shenzhen Delong Energy Technology Co.,LTD

Contact Person: Victor

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