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Adafruit
Lithium Ion Cylindrical Battery - 3.7v 2200mAh
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A 3.7V 2,200 mAh lithium-ion cylindrical battery with built-in protection circuitry for over-voltage, under-voltage, and over-current protection. Slim enough...
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A 3.7V 2,200 mAh lithium-ion cylindrical battery with built-in protection circuitry for over-voltage, under-voltage, and over-current protection. Slim enough to fit into many project enclosures and includes a JST 2-pin cable with a genuine JST connector for smooth, snag-free connections.
The battery can deliver up to 2C peak current (4,400 mA), though sustained draws should be kept under 0.5C (approximately 1 A). The protection circuit cuts output at 2.5V to prevent over-discharge.
Key Features
- 2,200 mAh Capacity – Plenty of power for portable projects
- Built-In Protection – Over-voltage, under-voltage, and over-current circuitry
- JST 2-Pin Cable Included – Genuine JST connector, rated for 2 A
- 3.7V Nominal – Standard lithium-ion voltage
- 2C Peak / 0.5C Sustained – Up to 4,400 mA peak, ~1 A recommended continuous
Specifications
- Chemistry – Lithium Ion
- Nominal Voltage – 3.7V
- Capacity – 2,200 mAh
- Cut-Off Voltage – 2.5V
- Recommended Charge Rate – 0.5C (1 A) or less
- Connector – JST 2-pin (included)
Safety Warning: Only use a LiIon/LiPoly constant-voltage/constant-current charger at 0.5C (1 A) or less. Do not use NiMH, NiCd, or lead-acid chargers. Never short, bend, crush, or puncture the battery. Never charge or use unattended. Always inspect batteries and surrounding circuitry for damage or loose wiring. Polarity matches Adafruit LiPoly/LiIon chargers — other brands may have reversed polarity.
Ideal For
- Portable electronics and IoT devices
- Arduino and Raspberry Pi projects
- Wearable technology
- Battery-powered sensor nodes
Package Contents
- 1× Lithium Ion Cylindrical Battery (3.7V, 2,200 mAh)
- 1× JST 2-Pin Cable
Jargon buster
Plain-language definitions for the technical terms used above.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
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