26650 3.2V 3200mAh Special Lithium Battery

Technical parameters and characteristics
Basic parameters
Voltage and capacity: Nominal voltage 3.2V, charging cut-off voltage 3.65V, discharging cut-off voltage 2.5V, typical capacity 3200mAh, energy approximately 10.24Wh.
Physical properties: Dimensions are 26mm in diameter × 65mm in length (standard size of 26650), weight approximately 80-100g, internal resistance ≤30mΩ (AC 1kHz), cycle life ≥2000 times (1C charge and discharge, capacity retention rate ≥80%).
Charging and discharging performance: Supports 1C standard charging and discharging (3.2A charging /3.2A discharging), with a maximum continuous discharge current of 9.6A, a pulse discharge current of 15A (5 seconds), and a fast charging time of approximately 1-2 hours (2A charger).
Temperature adaptability: Charging temperature 0-55℃, discharging temperature -20-60℃, storage temperature -20-45℃. At a low temperature of -20℃, the capacity retention rate is approximately 60-70%. At a high temperature of 60℃, it is necessary to avoid full charge storage.

Materials and Structures
Cathode material: Lithium iron phosphate (LiFePO₄), with a stable crystal structure, a thermal decomposition temperature above 600℃, and no risk of thermal runaway.
Negative electrode and electrolyte: Graphite negative electrode, organic solvent + lithium salt electrolyte, and the separator is a polyolefin porous membrane.
Packaging design: Steel shell cylindrical structure, compressive strength ≥300kgf, built-in safety valve for explosion-proof, supports flat head/pointed head design (pointed head with protective plate).


Core advantage
Safety
It has passed the needle-puncture, compression and overcharge tests without combustion or explosion, and complies with international safety standards such as UN38.3, IEC62133, CE and RoHS.
It has no memory effect, a low self-discharge rate (monthly self-discharge rate < 3%), and small long-term storage loss.
Durability
It has a long cycle life (≥2000 times), which is 4 to 8 times that of lead-acid batteries. High-temperature resistant (operating at -20℃ to 75℃, with a peak temperature resistance of 350-500℃).
Environmentally friendly and non-toxic, the total life cycle cost is one fourth of that of lead-acid batteries, in line with the trend of green energy.
Performance
The energy density is approximately 120-150Wh/kg, supporting high current charging and discharging. The voltage platform is stable (3.2-3.3V fluctuation < 5mV), making it suitable for scenarios that require stable output.


Application scenarios
Energy storage systems: home energy storage, solar/wind energy storage, UPS backup power supply, communication base stations.
Power and tools: High-power equipment such as electric bicycles, electric motorcycles, small electric vehicles, electric drills, electric saws, and electric screwdrivers.
Lighting and equipment: High-intensity flashlights, street lamps, solar street lamps, portable medical equipment (such as defibrillators, ventilators), military equipment (such as individual soldier communication equipment).
Special scenarios: outdoor adventure equipment, ship/railway transportation, renewable energy storage (photovoltaic/wind power), medical implant devices (requiring high safety).