32700 3.2V 5500mAh 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 5500mAh, energy approximately 17.6Wh, internal resistance ≤8mΩ (AC 1kHz), cycle life ≥2500 times (1C charge and discharge, capacity retention rate ≥85%).
Physical characteristics: The dimensions are 32mm in diameter and 70mm in length, with a weight of approximately 130-160g. Customized packaging is supported (such as steel shell cylinders, built-in protection plates, and heat sink designs).
Charging and discharging performance: Supports 1.5C fast charging (8.25A charging, fully charged in about 40 minutes), maximum continuous discharge current 16.5A (3C), pulse discharge current 27.5A (5 seconds), stable voltage platform (3.2-3.3V fluctuation < 2mV).
Temperature adaptability: Operating temperature -30℃ to 65℃, storage temperature -20℃ to 45℃. At a low temperature of -30℃, the capacity retention rate is ≥70% (with a heating system). At a high temperature of 65℃, it is necessary to avoid full charge storage.
Materials and Structures
Cathode material: Lithium iron phosphate (LiFePO₄), with nano-modification and carbon coating process, the ionic conductivity is increased by 30%, the thermal decomposition temperature is over 800℃, and there is no risk of thermal runaway.
Negative electrode and electrolyte: Graphite negative electrode + silicon-carbon composite coating, electrolyte is a highly stable lithium salt organic solvent (containing VC/FEC additives), separator is a nano-scale polyolefin porous membrane, supporting rapid ion transport.
Packaging design: Steel shell compressive strength ≥600kgf, built-in dual safety valves +PTC explosion-proof components, supports flat head/pointed head design (pointed head with intelligent BMS protection board), compatible with standard 32700 battery compartment, and can be optionally equipped with heat dissipation fins or liquid cooling modules.

Core advantage
Safety
It has passed strict certifications such as UL1642, IEC62133-2:2022, UN38.3, CE, and RoHS. There was no combustion or explosion in the needle puncture, compression, and overcharge tests, meeting the safety standards for air transportation.
It has no memory effect, a self-discharge rate of less than 1.5% per month, minimal long-term storage loss, and supports immediate charging and use.
Durability
The cycle life exceeds 2,500 times, which is 8 to 12 times that of lead-acid batteries. High-temperature resistant (operating at -30℃ to 75℃), with optimized low-temperature performance (3C discharge capacity at -30℃ ≥80%).
Environmentally friendly and non-toxic, its carbon emissions throughout the life cycle are 35% lower than those of ternary batteries, and it complies with the EU REACH and RoHS standards.
Performance
The energy density is approximately 160-190Wh/kg, supporting high-rate charging and discharging (3C discharge temperature rise < 30℃), with a stable voltage platform. It is suitable for scenarios that require continuous high power output, such as power tools, energy storage systems, and military equipment.

Application scenarios
Energy storage systems: Home energy storage (such as Tesla Powerwall compatible models), solar/wind energy storage, UPS backup power supply, communication base stations (5G/6G base station dedicated), data center backup power supply.
Power and Tools: Electric bicycles, electric motorcycles, small electric vehicles, electric drills, electric saws, electric screwdrivers, drones (long-range models), AGVs (Automated guided Vehicles), electric forklifts, golf carts.
Lighting and equipment: High-intensity flashlights, outdoor searchlights, solar street lamps, portable medical equipment (such as defibrillators, ventilators), military equipment (such as individual soldier communication equipment, night vision devices, unmanned aerial vehicles).
Special scenarios: outdoor adventure equipment, ship/railway transportation, renewable energy storage (photovoltaic/wind power), medical implant devices (requiring high safety), emergency power supplies (fire/rescue), aerospace equipment.