Description
These files show a series of standard 18650 Battery Holders. These are widely used in DIY electronics, robotics, and custom portable power projects to create battery packs from individual 18650 lithium-ion cells.
Product Overview
These holders are typically made from black, durable ABS plastic with nickel-plated steel springs to hold the batteries in place and ensure good electrical contact. They feature pre-soldered wire leads (red for positive, black for negative) for easy connection to your project.
Technical Specifications
The configuration for these holders is generally in series, meaning the voltage of the batteries adds up.
| Feature | 2-Slot Holder (L18650X2) | 3-Slot Holder (UM-18650X3) | 4-Slot Holder (L18650X4) |
| Battery Type | 18650 Li-ion | 18650 Li-ion | 18650 Li-ion |
| Configuration | 2S (Series) | 3S (Series) | 4S (Series) |
| Nominal Voltage | 7.4V | 11.1V | 14.8V |
| Max Voltage | 8.4V | 12.6V | 16.8V |
Important Safety Considerations
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No Integrated Protection: These holders are simple housings and do not contain built-in protection circuitry (BMS). If you are creating a rechargeable battery pack, you must use an external Battery Management System (BMS) to prevent overcharging, over-discharging, and short circuits.
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Battery Matching: Only use batteries of the same brand, model, capacity, and charge level. Mixing different types or states of charge can cause hazardous imbalances.
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Physical Fit: These are designed for standard, unprotected 18650 cells (approx. 65mm long). Protected cells, which include a small circuit board at one end, are longer and may not fit securely.
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Current Limitations: The thin wire leads are meant for low-to-moderate current. Ensure the gauge is appropriate for your project’s power requirements to avoid overheating.
Are you using these for a specific project, such as a multi-cell battery pack or a robotics application?
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