UltraFire 10440 Li-Ion Battery 1000mAh 3.7V (AAA Size)

UltraFire 10440 is a rechargeable lithium-ion battery with the same physical size as a standard AAA battery. It is used in portable electronics, LED flashlights, small electronic devices, and DIY projects that require a compact 3.7V power source.

Unlike standard AAA batteries (1.5V), this Li-ion battery provides a higher nominal voltage of 3.7V and is designed for devices that support lithium rechargeable cells.

Technical Specifications

• Battery type: Li-ion rechargeable
• Model: 10440
• Capacity: 1000 mAh
• Nominal voltage: 3.7 V
• Minimum voltage: 3.0 V
• Maximum charging voltage: 4.2 V
• Diameter: 10 mm
• Length: 44 mm
• Battery format: AAA size (10440)

Applications

• LED flashlights
• Portable electronic devices
• Measuring instruments
• DIY electronic projects
• Compact battery packs