This 3x18650 battery holder is designed to hold three 18650 cells and connect them in series, providing a simple power solution for compatible electronic projects.

With approximately 130mm / 13cm connection wires, the holder is easy to integrate into enclosures, prototypes, electronic modules, robotics systems, small devices and DIY projects requiring three 18650 cells.

Its compact 76 x 61 x 20mm dimensions make it suitable for assemblies where available space is limited, allowing practical installation without taking up excessive internal volume.

It is a useful option for prototyping, bench testing, portable power supplies, battery packs, maker projects and systems requiring power from rechargeable 18650 cells.

Main features

Battery holder for 3 x 18650 cells
Accessory type: battery holder
Compatibility: 3x18650
Electrical configuration: series connection
Connection: pre-installed wires
Wire length: approximately 130mm / 13cm
Approximate dimensions: 76 x 61 x 20mm
Main application: power supply for compatible electronic projects
Mounting: integration into enclosures, prototypes and equipment
Cells / batteries not included
Suitable for compatible 18650 cells
Suitable for electronics, robotics and prototyping

Recommended applications

Electronics projects
Robotics and automation
Prototyping and bench testing
Portable power supplies
18650 battery pack assemblies
Maker and DIY projects
Equipment powered by rechargeable cells
Compatible low-voltage systems
Project boxes and small electronic modules
Replacement of damaged holders in compatible projects

Important note

Before use, always confirm the polarity, 18650 cell type, final pack voltage, required current, protection circuit, charger used and equipment compatibility.

As this holder connects the 3 x 18650 cells in series, the final voltage will be the sum of the voltage of the cells used. With common Li-ion 18650 cells, a 3S configuration is typically associated with around 11.1V nominal and up to 12.6V fully charged, so it should only be used with equipment compatible with that voltage.

For safe use with rechargeable lithium cells, a suitable BMS/protection circuit, compatible charger and matched cells in good condition are recommended. Do not mix cells with different capacities, brands, charge states or wear levels.

Avoid short circuits, reverse polarity, overcharging, deep discharge, excessive heat and contact with loose metal parts. This item corresponds only to the 3x18650 battery holder with wires. 18650 cells, BMS, charger, enclosure and other accessories are not included unless expressly stated otherwise.