Samsung 50S – 21700 – 5000mAh 25A

Descrição

Samsung 50S – 21700 – 5000mAh 25A
Grade A :

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A melhor célula para equipamentos que exigem alta capacidade (Ah) com boa descarga de corrente continua(A), é uma excelente escolha para veículos elétricos portáteis como os skates, bikes, pranchas entre outros veículos elétricos e equipamentos como lanternas, pack de bateria para nobreak, carrinhos de criança etc.

Modelo: 21700 50S
Tamanho: 21700
Capacidade nominal: 4800 a 5000mAh (teste será realizado em Liitokala Eng 500)
Tensão nominal: 3.6V
Tensão max de carga: 4.2V
Máxima descarga continua: 20A (recomendado) a 25A
Máxima descarga picos: 35A

RESISTENCIA INTERNA: (a medir)

Vídeo canal youtube medindo Resistência Interna https://www.youtube.com/watch?v=xca8ogCzBSY

Nominal specifications (*1)
Item Specification
Standard
discharge capacity
Typ. 5,000mAh
-Charge: 0.5C(2.5A), 4.20V, 0.05C(250mA) cut-off @ RT
-Discharge: 0.2C(1A), 2.5V cut-off @ RT
*1C=5.000mA
Rated discharge capacity
Min. 4,800mAh
-Charge:1.2C(6A), 4.20V, 0.02C(100mA)cut-off @RT
-Discharge: 10A, 2.5V cut-off @ RT
Nominal voltage 3.6V
Standard charge CCCV, 2.5A, 4.20 V, 250mA cut-off
Rated charge CCCV, 6A, 4.20 V, 100mA cut-off
Charging time Standard charge : 150min / 250mA cut-off(@ RT)
Rated charge: 100min / 100mA cut-off(@ RT)
Max. continuous discharge
(Surface temperature)
25A(Without temperature cut)
45A(With 80℃ temperature cut)
Max. charge current 10A (for step charge)
6A (continuous charge)
Discharge cut-off voltage 2.5V (End of discharge)
Cycle life
① Capacity ≥ 2,940mAh @ after 250cycles
(60% of the standard capacity @ RT)
– Charge : 6A, 4.20V, CCCV 100mA cut-off @ RT
– Discharge: 25A , 2.5V cut-off @ RT
② Capacity ≥ 2,940mAh @ after 100cycles
(60% of the standard capacity @ RT)
– Charge : 6A, 4.20V, CCCV 100mA cut-off @ RT
– Discharge: 45A, 2.5V cut-off
(80℃ cut-off, re-discharge release < 50℃) @ RT
-SAMSUNG SDI Confidential Proprietary –
Spec. No. INR21700-50S Version No. 0.2
– 3/23 –
Retention characteristics
Capacity recovery(after the storage) ≥ 4,320 mAh
(90% of the rated capacity @ RT)
– Charge : 6A, 4.20V, CCCV 100mA cut-off @ RT
– Storage : 30 days (@ 60℃)
– Discharge : 10A , 2.5V cut-off @ RT
Cell weight 72.0g max
Cell dimension
Height : Max 70.62mm
Diameter : Max 21.25mm
Operating temperature
(Ambient)
Charge : 0 to 60℃
Discharge: -20 to 60℃
Operating temperature(*2)
(Surface)
Charge : 0 to 60℃
(recommended recharge release < 45℃)
Discharge: -20 to 80℃
(must re-discharge release < 60℃)
Operating temperature
(For safety certificate)
Charge : -10 to 60℃

Recovery 90% after
storage(*3)
1 year 0~25℃
3 months 0~45℃
1 month 0~60℃

Note (*¹): Protection function of the battery pack should be set within the specified
charge, discharge and temperature range in Cell Specification.
Note (*2): Discharge OTP(over temp. protection) should not be over 80℃ of temperature.
Protection set should be based on the location of the cell surface with the
highest temp increase part of the battery pack.
Note (*3): If Cell is kept as ex-factory status (30% of charge),
the capacity recovery rate shall be more than 90%.

Alguns dados e orientações importantes estão nas fotos.

Teste de Carga-Descarga

4814mAh usando no modo Normal Test com 500mA
4869mAh usando no modo Normal Test com 300mA
4925 mAh usando no modo Normal Test com 500mA

5014 mAh usando no modo Normal Test com 300mA

Alguns dados e orientações importantes estão nas fotos.

Capacidade: 5000mAh
Tensão Nominal 3,6 V – 3,7 V
Tensão de terminação do ciclo de carregamento 4,20V ± 0,05V
Corrente de descarga máxima: 35A
Não descarregue mais fundo que 2,5V
Mais piscina: topo plano
Química: Li-íon
Circuito de proteção: Sem
Diâmetro: 21,25mm
Altura: 70.62mm
Peso: 72,7g

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