Rechargeable 18650 lithium battery Battery Pack 2600mAh 7.4V
19.24wh lipo battery pack
Advantages
Strong Voltage Adaptability: The 7.4V battery is composed of two
18650 cells connected in series, a common medium-voltage
specification for electronic devices, requiring no additional
voltage conversion module to meet the needs of most devices.
Balance Between Battery Life and Size: The 2600mAh capacity meets
moderate usage needs, and the standardized size of the 18650 cells
allows for a compact battery pack structure, minimizing space
requirements.
Reliability and Cost Advantages: The 18650 cell technology is
mature, with a cycle life of 500-1000 cycles, good consistency,
controllable costs under mass production, and convenient
maintenance and replacement.
Applications
Portable Electronic Devices: Handheld walkie-talkies, portable gas
detectors, small Bluetooth speakers, external power supplies for
portable hard drives, etc.
Mobile Lighting Equipment: High-intensity flashlights, outdoor
emergency lights, head-mounted searchlights, etc.
Small Powered Equipment: Mini drones, small power tools,
remote-controlled cars/boats, and other electric toys.
Power supplies for specialized equipment: portable medical devices
(blood glucose meters, small monitors), portable printers, small
UPS backup power supplies, etc.
Safety Concerns
Over-heating Risk: The heating mechanism in the battery pack is designed to operate
within a specific temperature range. If the heating element
malfunctions or the temperature control system fails, the battery
can over-heat. Over-heating can lead to a phenomenon known as
thermal runaway. In a lithium-ion battery, this can cause a chain
reaction where the battery's internal components start to
decompose, release heat at an increasing rate, and potentially lead
to a fire or explosion. For example, if the temperature sensor
fails to accurately detect the battery's temperature and the
heating continues unchecked, the battery cells can reach
temperatures far above their safe operating limits.
Battery Swelling and Leakage
Pressure Build-up: Excessive heat can cause the battery to swell. As the temperature
rises, the internal pressure of the battery increases due to the
expansion of the electrolyte and the chemical reactions occurring
at a faster rate. Swelling not only indicates a potential safety
hazard but can also damage the device in which the battery is
installed. In severe cases, the battery may leak its electrolyte.
The electrolyte in 18650 lithium-ion batteries is often flammable
and corrosive. If it leaks, it can cause damage to surrounding
components and pose a fire and chemical burn risk.
Product Images
