|Place of Origin:||MADE IN CHINA|
|Minimum Order Quantity:||500|
|Packaging Details:||White Box|
|Payment Terms:||T/T, Western Union, Paypal, Cash|
|Supply Ability:||10000 piece per day|
|Nominal Voltage:||3.7V||Type:||Li Polymer|
|Business Type:||Manufacturer||Protection Circuit:||PCB|
|Max.charge Current:||1.0C||Max.discharge Current:||1.0C|
|Storage Temperature:||-10°C~ +45 °C||Cycle Time:||≥800times|
|As Of Shipment:||3.6V~3.9V|
3.7V Lithium Polymer Battery 4000mah 805080 3.7V Lithium Rechargeable Battery Cell
Thickness × Width × Length (mm)
8.0±0.2×50±0.5×80±0.5 (with PCM)
High energy density, good capacity, light and thin, safe
and reliable(with PCM) , long circle life, no memory,environmental, table performance, capacity and size could be customerized.
|Max Charge Current||
Charge with constant current 1C to 4.2V,then charge with constant voltage 4.2V till charge current less than 0.01C
|Max discharge current||
|Discharge cut-off voltage||
Standard Charging:0.5C Rapid charge: 1.0C
|Standard Charging method||
0.5C CC(constant current)charge to 4.2V, then CV(constant voltage 4.2V)charge till charge current decline to ≤0.05C
Charging, 0°C ~ 45°C ; 65±20%RH
Discharging, -20°C~60°C ; 65±20%RH
Storage for a long time(>3 months) and the storage condition shall be:<35°C;65±20%RH;3.7~3.9V
1. According to item 4.1.1, at 23±5℃.
2. Capacity comparison at each temperature, measured with constant discharge current 0.2C with 2.75V cut-off.Percentage as an index of the capacity compared with 100% at 23℃
3C digtal products: Computer / Camera /Labtop...
Portable small home appliance;
medical apparatus equipment;
electric tools ;
Package and shipping:
Optional package: Color paper box, PVC box, Cases, Transparent crystal cases, white netraul box.
Carriers: By express: Like DHL, UPS, FedEx; by air or by sea; Special line
How to place order:
1. Please kindly advise the items, quantity and other detail request about your order
2. After proforma invoice confirmed, the order will be arranged upon receipt of your deposit payment.
3. Confirm and ship the goods , the tracking number will be sent to your promptly
4. Our sales representative will help to tack your goods until you receive them well.
5. we will send customer satisfaction survey form to you ,appreciated get feedback from you about the quality, service, market feedback
Establised since 2006, Delong Energy Technologgy Co.,LTD is a modern enterprise, which specialized in new products researched and development, sales and trade. Delong Energy Tech has 2 business line, one is for finished product, another area is semi-finshed product.
And the main products includes: Power Bank, Li-ion battey cell and pack , Li-polymer cell and pack etc.
Welcome to contact us for further details about our company and products!
Contact person: Jenny
Mobile: +86 136 0302 8413
Wechat: +86 13603028413
Why choose Delong?
Focus on Batteries industry 15 Years
25 professional engineers who has worked with us more than 10 years now
Full automatic machine: 20 sets plastic injection machines, 1 large batteries aging test centre, 1 independent R&D office site.
one stop serive from housing, PCBA, batteries, assembling, package shipping.
Competitive price make you profit maximization
OEM and ODM
OEM and ODM can be acceptable
Best quality contral, the defective rate is within 0.01%
Q1: How fast can i get the quotation ?
A: We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the
price, please call us or tell us in your email so that we will regard your inquiry priority.
Q2: How long will it take to deliver goods?
A: We will deliver the goods within 3- 5 days for spare parts, other goods maybe take a little
more times to test and prepare,we will deliver the goods within the deadline which both
Q3: What kind of packaging you offer?
A: Color window box, Plastic box,Blister Package, White box, Gift box,Tin box, Glass Box,
ECO-package etc. OEM package is available !
Q4: What kind of logo files do you accept for printing logo ?
A: PDF, Core Draw, AI .
Q5: How can I get a sample to check your quality?
A: Generally speaking, Free sample is available. While some samples need to pay, But the
sample cost can be refundable after order confirmation