Li-polymer Cell Factory Wholesale Alarm Clock Battery UFX 302538 3.7V 250mAh Lithium Ion Battery
FOB Price: US $1.2 - 1.5 / Ampere
Min.Order Quantity: 1000 Ampere
Please contact us for the order !
Model Number: 302538
Type: Li-polymer
Nominal Voltage: 3.7V
Size: 3*25*40mm
Nominal Capacity: 250mAh
Product name: 302538 Li-ion battery
Warranty: 1 Year
Weight: 3g
Cycle life: 500 Times
Application: Alarm Clock Battery
Certificate: RoHS/MSDS
Payment: Paypal.TT.Escrow.Western Union
Max charge current: 1C
Product Parameters
|
No. |
Item |
General Parameter |
Remark |
|
|
1 |
Rated Capacity |
Typical |
255mAh |
Standard discharge(0.2C C5A) after Standard charge |
|
Minimum |
250mAh |
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|
2 |
Nominal Voltage |
3.7V |
Mean Operation Voltage |
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|
3 |
Voltage at end of |
3.0V |
Discharge Cut-off Voltage |
|
|
Discharge |
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|
4 |
Charging Voltage |
4.2±0.03V |
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|
5 |
Internal Impedance |
≤250mΩ |
Internal resistance measured at AC 1KHZ after 50% charge |
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|
The measure must uses the new batteries that within one week after shipment and cycles no more than 5 times |
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|
6 |
Standard charge |
Constant Current 0.2C5A |
Charge time : Approx 6h |
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Constant Voltage 4.2V |
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|
0.01 C5A cut-off |
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7 |
Standard discharge |
Constant current 0.2 C5A |
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end voltage 3.0V |
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8 |
Fast charge |
Constant Current 0.5C5A |
Charge time : Approx 2.5h |
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|
Constant Voltage 4.2V |
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|
0.01 C5A cut-off |
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|
9 |
Fast discharge |
Constant current 0.5C5A |
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end voltage 3.0V |
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|
10 |
Maximum Continuous Charge Current |
1 C5A |
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|
11 |
Maximum Continuous Discharge Current |
1C5A |
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12 |
Operation Temperature Range |
Charge: 0~45℃ |
60±25%R.H. |
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|
Bare Cell |
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Discharge: -20~60℃ |
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13 |
Storage Temperature Range |
Less than 1 year: -20~25℃ |
60±25%R.H. |
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|
less than 3 months: -20~40℃ |
at the shipment state |
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14 |
Pack Dimension |
High: max40mm Width: max25mm |
Initial Dimension |
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