Cylindrical Battery 18650 3500mAh 3C Li Ion Cell
Summary of 18650 3500mAh 3C Li-ion Battery 3.7V
Cylindrical Battery 18650 3500mAh 3C Li-Ion Cell is a high-performance rechargeable lithium-ion battery designed for applications requiring high energy density, long runtime, and stable high-current output. With an energy density of up to 264.28Wh/kg, continuous 10A discharge capability, and excellent cell consistency, this 18650 cell delivers Samsung 35E / LG MJ1-level quality, making it ideal for multi-series and multi-parallel battery pack assembly.
18650 Battery 3500mah Specification
Model: 18650
Rated capacity: 3500mAh
Energy: 12.95Wh
Energy Density: 264.28Wh/kg
Minimal Capacity: 3250mAh
Rated voltage: 3.7V
Discharge Cut-off Voltage: 2.75V
Charge Cut-off Voltage: 4.2V
Cycle Life: More than 500 cycles
Dimensions: Φ18*65mm
Weight: 49g
Internal Resistance: ≤ 50m Ω
Max Continuous Discharge Rate: 3C (10A)
Max Continuous Charge Current: 1C
Charging Temperature: 0 to 45℃;
Discharge Temperature: -20 to 65℃
Storage Temperature:
- -20℃~25℃: 12 months
- -20℃~45℃: 3 months
- -20℃~60 ℃: 1 month
Key Features – 18650 3500mAh Battery
🚀 Ultra-High Energy Density – Up to 264.28Wh/kg
This 18650 Li-ion cell achieves an outstanding gravimetric energy density of 264.28Wh/kg, allowing more power to be stored in a compact cylindrical format. It is ideal for designs where space, weight, and efficiency are critical.
🔋 Large Capacity for Extended Runtime
With a nominal capacity of 3500mAh, this cell delivers longer operating time per charge, reducing pack size or cell count while maintaining reliable endurance for demanding devices.
🔥 10A Continuous Discharge for High-Load Applications
Supporting 3C discharge (up to 10A continuous), the cell provides strong and stable current output. This makes it suitable for applications that require instant power delivery and sustained high current, without excessive voltage drop.
🏭 Comparable to Samsung 35E & LG MJ1 Quality
Manufactured with advanced materials and strict process control, this 18650 cell offers performance, safety, and reliability comparable to Samsung 35E and LG MJ1. It is an excellent alternative for these well known brand cells.
🧩 High Cell Consistency for Pack Assembly
Excellent capacity, internal resistance, and voltage consistency make this cell especially suitable for multi-series and multi-parallel battery packs, improving overall pack safety, lifespan, and balancing performance.
🔁 Long Cycle Life – 500 Cycles with ≥2800mAh Remaining
After 500 full charge–discharge cycles, the remaining capacity can still exceed 2800mAh, ensuring long-term durability and reduced replacement costs in commercial and industrial applications.
🧠 Typical Applications
Custom lithium battery packs
E-mobility & light electric vehicles
Portable power stations & energy storage
Power tools & industrial equipment
LED lighting & backup power systems
❓ Frequently Asked Questions (FAQ)
Q1: How many times can you recharge an 18650 battery?
A: Cestpower 18650 lithium-ion battery can typically be recharged over 500 times under normal use conditions, for example this 3500mah retains more than 2800mah after 500 times of charge & discharge
Q2: How long will a 3500 mAh battery last?
A: A 3500 mAh battery can deliver 3.5 A for about 1 hour, 1 A for roughly 3.5 hours, or proportionally longer at lower currents. Actual runtime depends on the device’s power consumption, discharge rate, and operating conditions.
Q3: How long does a 3500mAh battery take to charge?
Q4: What is the charge limit for a 18650 battery?
A: The typical charge limit for a standard 18650 lithium-ion battery is 4.2 volts per cell. Charging beyond this voltage can damage the battery and pose safety risks.
Q5: Is it better to have higher or lower mAh?
A: Higher mAh rating provides longer battery runtime between charges, making it ideal for power-hungry devices. A lower mAh battery is smaller and lighter but needs to be recharged more frequently.
Lithium Ion Battery 3.7V 18650 2000mAh 15C
3.7V 18650 3500mAh Lithium Ion Li-ion Battery with PCB
