18650 2P 3.7V 2400mAh Li-ion Battery Pack with JST 3-Pin Plug
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Prices updated: 14 Oct 2026
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About this product
This 18650 2P pack combines two lithium-ion cells in parallel for a 3.7 V nominal, 2400 mAh battery with a JST 3-pin 2.54 mm plug. It includes red positive, black negative and yellow temperature-sensing wires for compatible portable and DIY projects.
Specifications
- Cell type
- 18650 Li-ion, 2 cells
- Configuration
- 2P (parallel)
- Nominal voltage
- 3.7 V
- Capacity
- 2400 mAh
- Connector
- JST 3-pin, 2.54 mm
- Wires
- Red (+), black (−), yellow (temperature sensing)
Frequently asked questions
What charger should I use?
Use a charger designed for a single 3.7 V lithium-ion battery, which typically charges to 4.2 V. Confirm the charger's output matches the pack's voltage and connector before connecting.
What is the yellow wire for?
The yellow wire is a temperature-sensing wire for compatible devices. Do not use it as a power line, and connect it only to a device or charger that expects it.
