SAMSUNG 50G 5A/3.7V LITHIUM (21700) SERIES USED

The Samsung 50G is a high-capacity, unprotected lithium-ion rechargeable battery cell. Its full designation is typically Samsung INR21700-50G.

The specifications often vary slightly depending on the specific revision or the source of the datasheet, but the common nominal ratings are:

• Form Factor:21700 (a cylindrical cell with a diameter of 21mm and a length of 70mm).

• Nominal Capacity:5000mAh (or a minimum of 4,850mAh to 4,900mAh).

• Nominal Voltage:3.6V or 3.63V (your query mentions 3.7V, which is a common, slightly higher nominal voltage used for marketing Li-ion cells).

• Maximum Charging Voltage (End-of-Charge):4.2V.

• Discharge Cut-off Voltage (End-of-Discharge):2.5V.

• Max Continuous Discharge Current (CDR): Typically, 9.8A to 10A (though some sources list a higher current, like 14.7A, for low-temperature use or pulse discharge).

• Standard Charging Current: Approximately 2.45A to 2.5A (0.5C).

• Max Charging Current: Up to 4.9A (1C).

• Chemistry: Lithium Nickel Cobalt Aluminum Oxide (INR or LiNiCoAlO2).

The Samsung 50G cell is categorized as a high-capacity/moderate-drain battery. This makes it an excellent choice for applications where long run-time is prioritized over extremely high burst power, such as:

• Electric Scooters and Bikes (eBikes)

• Energy Storage Systems (ESS)

• Laptops and Power Banks

• General Custom Battery Pack Builds

It is crucial to note that this is an unprotected cell. It does not have a built-in protection circuit against over-charge, over-discharge, or short-circuiting. It must be used in a battery pack with a proper Battery Management System (BMS) or a device with appropriate protection circuitry.