100Pcs 3.7V 280Mah 501740 Li-Polymer Li Battery Jst-Ph 2Pin 2.0 For SMART WATCH For Sale

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Please select the correct battery terminal interface you need.

Special Notes:

1、There are three kind of Connectors, please choose the correct version you need.

2、As a manufacturer of batteries, we can customize the connector you need,if you need any other types,please contact us.

3、When purchasing a LIPO battery, please note the following: First, ensure there is enough installation space to accommodate the battery and its connection wires. Second, when measuring the battery size, the numerical code (like 502030) refers to the thickness, width, and length of the battery itself, excluding the JST connector. Make sure your device can accommodate these dimensions to avoid installation issues.

Thank you for your understanding.

CaoDuRen Li-PO battery

CaoDuRenbatteries can be customized to your desired connector port size and dimensions. They undergo strict quality inspections to ensure exceptional reliability. If you require a large quantity of batteries, we provide on-site factory inspection services. Additionally, purchasing large quantity batteries allows for negotiable pricing.

NO

1

Charge cut-off voltage

4.2v

2

Discharge cut-off voltage

2.75v

3

Standard charging mode

1.Charge with a constant current of0.2C to4.2V, then turn to a constant voltage of4.2V for charging until the charging current is ≤0.01C.

2. Charge to4.2V witha constant current of 0.5C, and then charge at a constant voltage of4.2Vuntil the charging current ≤0.01C

Charging time≤8 hours

4

Standard discharge performance

After fully charging in the standard charging mode, leave it for 1 hour, anddischarge it to2.75Vwith a constant current of 0.5C.

Discharge time≥300Min

5

high temperature performance

After the battery is fully charged, it should be placed in an environment of 55℃± 2℃ for 2 hours, and then discharged to2.75V with a current of 0.5C.

The discharge time is≥51Min, andthe appearance of the battery has no deformation or burst.

6

low temperature performance

Charge the battery in standard mode, put the battery in a low-temperature box at (-10±2)°C for 16-24 hours, and discharge it at a constant current of 0.5C to3.7V.

The discharge time is≥210Min, andthe appearance of the battery has no deformation or burst.

7

charge retention

After charging in the standard mode,the battery was left open circuit for 28 days at an ambient temperature of 20°C±5°C, and then discharged to2.75V at a current of6 C.

Discharge time≥255Min

8

cycle life

Discharge to2.75V with a constant current of 0.2C, then charge4.2V with a constant current of 0.5C, then charge at a constant voltageof 4.2Vto a current≤1C, rest for 10Min, discharge to2.75V with a constant current of 0.2C, after the discharge is completed , stand still for 10Min, and then carry out the next charge-discharge cycle until the first discharge capacity of 0.5C where the discharge capacity is less than 80% for three consecutive times.

Cycle times≥500 the battery to 40% to 65% of its capacity instandard mode , and then store it in an environment with an ambient temperature of 20°C±5°C and a relative humidity of 45% to 85%. Afterstoragefor 12 months, discharge to the cut-off voltage with 0.2C current.

The batteries for the storage test should be selected from the batteries whose production date to the test date is less than 3 months

Discharge time≥240Min

Item

Parameter Value

Unit

Overcharge detection protection release detection detection delay

≤120

mS

Over discharge discharge detection detection Overcurrent protection circuit detection delay

≤320

uS

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Use Attentions

Warnings

1 Do not expose to, dispose of the battery in fire.

2 Do not put the battery in a charger or equipment with wrong terminals connected.

3 Avoid shorting the battery.

4 Avoid excessive physical shock or vibration.

5 Do not disassemble or deform the battery.

6 Do not immerse in water.

7 Do not use the battery mixed with other different type or model batteries.

8 Keep out of the reach of children.

Storage

1,The Li-ion battery pack should be stored in a cool, dry and well-ventilated area, and should be far from the fire and the high temperature.

2,The battery should store in the product specification book stipulation temperature range, the best storage temp. is 25±5℃. The best humidity is 60±15%.

3,The battery should be stored within room temperature, and charged to 40%~60% electric quantity（3.85V）. In order to avoid over-discharge, we suggest charge and discharge the batteries every three months.,Then charge to40%~60%electric quantity(3.85V).

Transportation

1 Do not mix the battery products with other car gos.

2 Do not immerse the battery products in water or allow it to get wet.

3 Do not over 7 layers staking and upside-down.

4 The highest temperature in transportation is lower than 65℃.

Charge

1 Battery must be charged in appropriate charger only.

2 Never use a modified or damaged charger.

3 Do not leave battery in charger over 24 hours.

4 Charging current: Can not surpass the biggest charging current which in this specification book stipulated.

5 Charging voltage: Does not have to surpass the highest amount which in this specification book stipulated to decide the voltage.

6 Charge temperature: The battery must carry on the charge in the ambient temperature scope which this specification book stipulated.

7 Uses constant current and constant voltage way charge. PLS connect the positive and negative terminals in right way, or the battery may be damaged.

Discharge :

1 The discharging current should not surpass the biggest discharging current this specification book stipulation, The large discharge current can cause heat and lower capacity.

2 Discharge temperature: The battery discharge must carry on in the ambient temperature scope which this specification book stipulated.

3 Over-discharge: After short time over discharge, then charge immediately won’t damage the battery. But the battery will be damaged for being long time over discharged. During long-term storage, the battery may be within over-discharging condition for self discharge. To prevent the occurrence of over discharging, the battery should maintain the certain capacity when storage.

Handling of Cells

1Soft Al foil

●Don’t strike battery with any sharp edge parts

●Trim your nail or wear glove before taking battery

●Clean worktable to make sure no any sharp particle

2 Sealed edge may be damaged by heat above 100°C, bend or fold sealed edge.

3 Handling ofTabs

The battery tabs are not so stubborn especially for aluminoustab.

Do not bend tabs unnecessarily.

4 TabConnection

Ultrasonic weldingorspot weldingisrecommended for LIP tab connection method.

Battery pack should be designed that shear force are not applied to the LIP tabs.

If apply manual solder method to connect tab with PCM, below notice is very important to ensure battery performance:

nThe solder iron should be temperature controlled and ESD safe;

nSoldering temperature should not exceed 370°C;

nSoldering time should not be longer than 3s;

nSoldering times should not exceed 5 times, Keep battery tab cold down before next time soldering;

nDirectly heat cell body is strictly prohibited, Battery may be damaged by heat above approx. 100°C