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Shenzhen Delong Energy Technology Co.,LTD
Shenzhen Delong Energy Technology Co., LTD Professional Expert of rechargeable li-ion battery , Power Bank, Car Jump Starter
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3.7v 4000mah Li Ion Battery Pack Rechargeable 2S1P With Connector

3.7v 4000mah Li Ion Battery Pack Rechargeable 2S1P With Connector

Brand Name : DELONG
Model Number : DEL-DC3740
Certification : CE/ROHS/etc
Place of Origin : China(Shenzhen)
MOQ : 100 units
Payment Terms : T/T, Western Union, Paypal
Supply Ability : 10000 units per day
Packaging Details : Standard Export Package
Model : DEL-374000
Nominal Voltage : 3.7v or other
Nominal Capacity : 4000mAh
Size : Custom
Weight : About 100g
Battery type : 18650 Lithium-ion cell
Connector : Custom or red/black wire
Switch/indicator : Available
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3.7v 4000mah Li Ion Battery Pack Rechargeable 2S1P With Connector


TypeLi-ion battery pack with red/black wire
Battery CellsA Grade quality 18650 battery
Nominal voltage3.7v 1S2P
Max continuous charge/discharge currentadjustable
Charger Includedcharger:US plug/EU plug/UK plug
Protection2S PCM,over-charge/discharge protection, over-heat protection
Recharge cycleMore than 500 times
LED IndicatorAvailable
ON/OFF SwitchAvailable
Key word3.7v battery
Standard Charge TimeAround 1hour
Dimensionas your requirement
Operating temperature-20 °C to 60 °C
Charge temperature-0 °C to 45 °C
Storage temperature-20 °C to 45 °C
Operating humidity5% to 90%,non-condensing
ApplicationsLed 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


  • Communication equipment: Cordless phones, walkie-talkie
  • Information equipment: Laptop, PDA, portable fax machines, remote control
  • Audio-visual equipment: : Digital cameras, camcorders, DVD, VCD, MD, CD drive
  • Lamps: Emergency lights, solar lightsSearchlight, flashlight
  • Electronic toys: Remote control cars, remote control boats, aircraft model
  • Power Tools: An electric drill, planer, electric, electricity approved Please review the attached details of some of our LED / LCD TVs.
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.

Product Tags:

li-po battery pack


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