The image shows four 18000mAh Li-ion rechargeable batteries. Helpful information:
Capacity: 18000mAh indicates the battery's charge capacity; higher mAh means longer usage.
Type: Li-ion (Lithium-ion) is a common rechargeable battery type.
Voltage: Typically around 3.7V per cell, but this is not visible in the image.
Usage: Suitable for devices needing 12V DC power, like cameras, LED lamps, and portable electronics.
Charging: Full charge time can take over 8 hours.
Lifespan: Overcharging or completely draining the battery can negatively impact its lifespan.
Compatibility: Ensure the battery's specifications match the device requirements to avoid damage.