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

