2-power pääakku - akku - 54 mAh (2P-1W2Y2)

Small IoT sensors, wearable devices, and compact electronics often depend on a reliable, rechargeable power source that fits into tight spaces. The 2-Power Main Battery Pack delivers 54 mAh of capacity at 3.7 V in a compact Li-Ion cell, ensuring your device stays powered through daily use. Integrated protection circuits guard against overcharge, over-discharge, and short circuits, while the 1S1P configuration keeps the footprint minimal. With a cycle life of up to 500 charges and a low self-discharge rate, this battery is a practical replacement or upgrade for compatible gadgets.

Key specifications

• Battery chemistry: Lithium-Ion (Li-Ion)
• Nominal capacity: 54 mAh
• Nominal voltage: 3.7 V
• Energy rating: 0.2 Wh
• Cell configuration: 1S1P
• Rechargeable: Yes
• Cycle life: Up to 300–500 cycles
• Internal resistance: < 200 mΩ
• Self-discharge rate: < 5% per month
• Operating temperature: 0°C to 45°C
• Storage temperature: -20°C to 60°C
• Certifications: CE, RoHS

Why choose it

This battery is built for longevity and safety. The integrated protection against overcharge, over-discharge, and short circuits prevents damage to both the battery and your device. Its low self-discharge means it retains charge during storage, so it's ready when you need it. The compact form factor fits easily into small electronics, and the Li-Ion chemistry provides a stable voltage output for consistent performance.

Ideal use cases

• Replacing a worn-out battery in IoT sensors, smart tags, or small medical devices.
• Powering DIY electronics projects that require a compact 3.7 V Li-Ion cell.
• Maintaining backup power for low-drain devices such as remote controls or small wearables.
• Upgrading the battery in compatible handheld gadgets to extend runtime.

Good to know

The battery does not include a connector; it is designed for devices with a matching terminal or for custom wiring. Always verify polarity and voltage compatibility before installation. Store in a cool, dry place and avoid extreme temperatures to maximise cycle life. For disposal, follow local regulations for lithium-ion batteries.