Wholesale li-ion 18650 3.7v battery rechargeable for Flashlight

Product Description

Model	18650 3.7V 2600
Type	Li-ion
Rated Capacity	2600mAh
Nominal Voltage	3.7V
Max charge Voltage	4.2 V
Discharge cut-off voltage	2.75V
Max Chaging current	1 C
Max Discharging current	5 C
Diameter	18.1 ± 0.2 mm
Height	64.8 ± 0.5mm
Weight	45 ± 1g

 

 

Specification 

NO	Items	Parameter	Remarks
2.1	Rated Capacity	2600mAh	Discharge:0.2C Cut-off voltage:3.0V
	Minimum Capacity	2545mAh
2.2	Energy	9.62Wh
2.3	Nominal Voltage	3.7V
2.4	Open Voltage	≥3.85V
2.5	Load Voltage	≥ 3.6	10Ω
2.3	Internal Impedance	≤60mΩ	AC 1KHz after standard charge
2.7	Charge voltage	4.2V
2.8	Standard charge current	520mA
2.9	Max charge current	2600mA
2.10	Standard discharge current	520mA
2.11	Max Discharge current	13000mA
2.12	Discharge cut-off voltage	3.0V
2.13	Operating Temperature	0~+45℃	Charge
		-20~+30℃	Discharge
2.14	Storage Temperature	-20℃~+30℃	Less that 1 month
		-20℃+30℃	Less than 3 months
2.15	Weight	45 ± 1g

 

1 Charging 

1.1 Charging current 

   Charging current should be less than maximum charge current specified in the Product Specification.Charging with higher current than recommended value may cause damage to cell electrical, mechanical,and safety performance and could lead to heat generation or leakage.

 1.2 Charging voltage 

   Charging shall be done by voltage less than that specified in the Product Specification(4.2V/battery).Charging beyond 4.30V,which is the absolute maximum voltage ,must be strictly prohibited. The charge shall be designed t o comply with this condition.

  It is very dangerous that charging with higher voltage than maximum voltage may cause damage to the cell electrical ,mechanical safety performance and could lead to heat generation or leakage.

  

1.3 Charging temperature 

  The cell shall be charged within 0℃~45℃range in the Product Specification

1.4 Prohibition of reverse charging 

  Reverse charging is prohibited .The cell shall be connected correctly .The polarity has to be confirmed before wiring.In case of the cell is connected improperly, the cell cannot be charged.Simultaneously,the reverse charging may cause damaging to the cell which may lead to degradation of cell performance and damage the cell safety,and could cause heat generation or leakage.

2 Discharging 

 2.1 Discharging current 

 The cell shall be discharged at less than the maximum discharge current specified in the Product Specification .High discharging current may reduce the discharging capacity significantly or cause over-heat.

 2.2 Discharging temperature 

  The cell shall be discharged within -20℃~30℃range specified in the Product Specification.

  2.3 Over-discharging 

 It should be noted that the cell would be at an over-discharged state by its self-discharge characteristics in case the cell is not used for long time.In order to prevent over-discharging,the cell shall be charged periodically to maintain between 3.7V and 3.9V

Over-discharging may causes loss of cell performance, characteristics,or battery functions

 The charger shall be equipped with a device to prevent further discharging exceeding a cut-off voyage specified in the Product Specification . Also the charge shall be equipped with a device to control the recharging procedures as follows:The cell battery pack shall start with a low current(0.01C)for 15-30minutes,i.e.pre-charging, before rapid charging starts .The rapid charging shall be started after the (individual)cell voltage has been reached above3.0V within 15-30munutes that can be determined with the use of an appropriate timer for pre-charging.In case the (individual) cell voltage does not rise to 3.0V within the pre-charging time ,then the charger shall have functions to stop further charging and display the cell/pack is at abnormal state.

3 Protection Circuit Module 

 The cell/battery pack shall be with a PCM that can protect cell /battery pack properly. PCM shall have functions of (1) overcharging prevention,(2)over-discharging prevention,(3)over current prevention to maintain safety and Prevent significant deterioration of cell performance. The over current can occur by external short circuit.

 

3.1 overcharging protection :

  Overcharging protection function shall stop charging if any one of the cells of the battery pack reaches 4.30±0.05V;

  

 3.2 over-discharging protection:

  Over-discharging prevention function shall work to avoid further drop in cell voltage of 2.75±0.10V

  Or less per cell in any cell of the battery pack. It is recommended that the dissipation current of PCM

  Shall be minimized to 0.5uA or less with the over-discharging prevention,the protection function shall monitor each back of the battery pack and control the current all the time.

4 Storage

 The battery shall be storied within-10℃~45℃range environmental condition.

 If the battery has to be storied for a long time (over 3 months),the environmental condition should be:Temperature:23±5℃,Humidity:35±20%RH

The voltage for a long time storage shall be 3.7V~3.9V range.

5 Handling Instructions 

  Read and observe the following and precautions to ensure correct and safe use of Li-polymer batteries.

18650 3.7v battery 18650 3.7v battery 18650 3.7v batter

 

Company Information

Guangzhou FuBai Technology Co., Ltd. has nearly 20 years experience in battery R & D and production, whose products include lithium-ion batteries, NiCd / NiMH batteries, and power bank, rechargeable flashlights and other battery extension products. FuBai owns Guiping and Guigang battery production base and Guangzhou battery production / flashlight processing / mobile power production demonstration bases, with a daily capability of 18650/18500/26650/14500 and other lithium-ion batteries 100,000 pcs, high temperature / low temperature / power type NiCd / NiMH battery 400 000 pcs, mobile power / rechargeable flashlight 2--3 million units, but also provide design, development, tooling, manufacturing, assembly, testing and other supporting services to customers and the batteries to the finished battery packs, mobile power / charge flashlight OEM / ODM.

 

According to ISO 9001: 2000 system requirements, Fubai Technology establish and improves the quality assurance system to ensure that the quality of lithium ion batteries, Ni-Cd / Ni-MH battery, power bank, rechargeable flashlight are safe and reliable ,all of it are in line with CE, UL, and ROHS and other international certification requirements. Specialized production to protect the stability and consistency of batteries; large-scale production to ensure adequate battery supply and timely delivery; more competitive price and better service to earns the trust and praise, so FuBai products are preferred by the customers of the United States, Europe, South Korea, Hong Kong, Macao and Taiwan and more than 70 countries and regions.

 

FuBai Technology is committed to becoming a global supplier of better quality, seeking sincere cooperation and a common development with you.

 

 

18650 3.7v battery 18650 3.7v battery 18650 3.7v battery

Our Services

 

1. Contactus for good price.

2. If you need, We can send you samples to check.

3. Confirm other details such as delivery time, payment, shipment.

4. After produce finished, we send the sample for your check if you need, then you finish payment.

5. We arrange shippment. And send documents for your custom clearance.

6. When you got the goods, tell us the comments then we can do better next time.

7. Will share latest price or other news of your goods anytime if you need.

8.the battery that we sold supports1 year warranty.

 

FAQ

 

FAQ

Q1. Can I print my logo on product?

 

Yes of course, please contact with our sales, they will help you to customized your own case.

Q2. Are you a manufacturer or a trading company?

 

   We are a manufacturer, providing OEM & ODM service.

 

Q3. What is the delivery date for a sample?

 

   Usually about 2-3 days for items with general requirements.

 

Q4. Are your products conforming to our standards?

 

   Yes, our products pass the certificates CE, RoHS etc.

 

Q5. How do you control the quality?

 

   We control the product quality by IQC, three tests on production lines, and 100% aging testing before packaging.

 

Q6. What's MOQ?

 

   MOQ is 100 pcs. Of course, we could accept small trial orders for certain items.

 

Q7. Can you give us a favorable discount?

 

   Of course, a favorable discount will be offered if the quantity is sizable.

 

Q8. How do you ship the goods and how long does it take?

 

We usually ship by DHL, UPS, FEDEX, TNT. It usually takes 4-5 days to arrive. By air or by sea are also acceptable.