Available Models: INR21700 P50B, P45B, P42A | INR18650 P30B, P28A, M35A Applications: Power tools, drones, model aircraft, FPV drones, agricultural drones, robots, submarines, and high-drain electronics.
Molicel P50B Technical Datasheet
Parameter
Value
Test Conditions
Model Number
INR21700 P50B
Standard Industry Grade
Chemistry
Lithium-Ion (Li-ion)
Cathode: NCM / Anode: Graphite
Rated Capacity
5000mAh (5.0Ah)
0.2C discharge to 2.5V
Max Charge Current
15.0A (3C)
T ≤45°C
Continuous Discharge
45A (9C)
Surface T ≤80°C
Molicel P45B Technical Datasheet
Parameter
Value
Test Conditions
Model Number
INR21700 P45B
Ultra High Power Cell
Rated Capacity
4500mAh (4.5Ah)
0.2C discharge to 2.5V
Continuous Discharge
50A (11.1C)
Max current limit
Peak Pulse
80A (17.8C)
≤5s duration
Cycle Life
≥600 cycles
1C charge/discharge
Molicel P42A & P30B Comparison
Parameter
P42A (21700)
P30B (18650)
Capacity
4200mAh
3000mAh
Internal Resistance
≤9mΩ
≤10mΩ
Max Discharge
45A
35A
Weight
69g
46.5g
Molicel 18650 Series (P28A & M35A)
Parameter
P28A (High Power)
M35A (High Capacity)
Rated Capacity
2800mAh
3500mAh
Max Discharge
35A
10A
Cycle Life
≥800 cycles
≥500 cycles
Typical App
Racing Drones
Long Range Robots
Frequently Asked Questions
What are the primary applications for Molicel 21700 batteries?
These cells are specifically engineered for ultra-high-drain applications, including professional power tools, FPV drones, agricultural UAVs, robotics, and electric vehicles requiring high peak currents.
Is the Molicel P45B better than the P42A?
The P45B is an upgrade over the P42A, offering slightly higher capacity (4500mAh vs 4200mAh) and significantly better thermal performance and discharge capability at high currents.
What is the safe discharge cut-off voltage?
The recommended discharge cut-off voltage is 2.5V. Discharging below this level frequently can cause irreversible damage to the cell chemistry and reduce cycle life.
Can these batteries be fast-charged?
Yes, models like the P45B support fast charging up to 2C (9.0A), though standard charging (1C or less) is recommended for daily use to maximize the battery's lifespan.
How should I store the cells if not in use?
Batteries should be stored at approximately 50% State of Charge (SOC) in a cool, dry place (ideally below 25°C). For long-term storage, check the voltage every 3 months.
What does the "AC Internal Resistance" signify?
It indicates the cell's ability to handle high current loads. A lower internal resistance (like the ≤7mΩ found in the P50B) means less heat generation and higher efficiency during heavy discharge.
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