Adafruit
Lithium Ion Polymer Battery with Short Cable - 3.7V 420mAh
A 3.7 V lithium-ion polymer (LiPo) battery with 420 mAh capacity (approximately 1.55 Wh). It features a short cable with a genuine 2-pin JST-PH connector tha...
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A 3.7 V lithium-ion polymer (LiPo) battery with 420 mAh capacity (approximately 1.55 Wh). It features a short cable with a genuine 2-pin JST-PH connector that clicks smoothly into matching JST jacks without snagging.
The battery includes built-in protection circuitry that guards against overcharging, over-discharging (cuts off at 3.0 V), and output short circuits. Output voltage ranges from 4.2 V when fully charged to 3.7 V nominal.
Key Features
- 420 mAh Capacity – Approximately 1.55 Wh
- 3.7 V Nominal – 4.2 V fully charged, 3.0 V cutoff
- Genuine JST-PH Connector – 2-pin with short cable for reliable connections
- Built-In Protection – Overcharge, over-discharge, and short-circuit protection
- Thin and Lightweight – Ideal for portable and wearable projects
Specifications
- Chemistry – Lithium-ion polymer (LiPo)
- Nominal Voltage – 3.7 V
- Capacity – 420 mAh
- Connector – 2-pin JST-PH
- Max Charge Rate – 420 mA (1C)
Jargon buster
Plain-language definitions for the technical terms used above.
- conductive thread
- Thread made with metal or other conductive fibres so it can carry electricity while being sewn into fabric. It matters for wearable and textile projects because it can replace wire, but it has more resistance than normal hookup wire.
- LiPo
- A LiPo (lithium polymer) battery is a rechargeable lithium battery widely used in portable projects because it is light and compact. LiPo cells need correct charging circuitry and careful handling to stay safe, so equipment that supports LiPo generally includes charging or protection hardware suited to that battery type.
- pH
- A measure of how acidic or alkaline a liquid is, on a scale where 7 is neutral. For a water monitoring kit, pH tells you about water chemistry and whether the included probe matches the range and accuracy your project needs.
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