2-power Main Battery Pack - Akku - 47 mAh (2P-HP277)

When your small electronic device stops holding a charge, this 2-Power 2P-HP277 replacement battery gets it running again. It is a compact lithium-ion polymer cell rated at 3.7V and 47mAh, suitable for a wide range of portable gadgets, sensors, and embedded systems. The prismatic form factor fits into tight internal compartments, and the black casing blends discreetly with most device interiors.

Key specifications

• Chemistry: Li-ion Polymer (rechargeable)
• Nominal voltage: 3.7 V
• Capacity: 47 mAh
• Energy: 0.17 Wh
• Number of cells: 1
• Cycle life: up to 500 charge/discharge cycles
• Protection: overcharge, over-discharge, short circuit
• Operating temperature: 0°C to 45°C
• Storage temperature: -20°C to 60°C
• Certifications: CE, RoHS
• Colour: Black

Why choose it

This battery is built with a protection circuit that guards against common failure modes, extending the life of both the cell and your device. The Li-ion polymer chemistry offers a stable discharge curve and low self-discharge, so the battery is ready when you need it. With up to 500 cycles, it provides long-term value for maintenance and repair tasks.

Ideal use cases

• Replacing a worn-out battery in handheld instruments, IoT sensors, or small medical devices
• Powering DIY electronics projects that require a compact 3.7V source
• Keeping spare batteries on hand for field service technicians
• Restoring functionality to legacy equipment where original batteries are no longer available

Good to know

Installation is internal, so basic soldering or connector matching may be required depending on your device. The battery does not include a connector by default; typical terminations are bare wires or a small JST plug. Always verify polarity and dimensions before installation. Store the battery in a cool, dry place when not in use, and avoid exposing it to temperatures above 60°C.