SPIDER Automation | 2×18650 Battery Holder with Cover, ON/OFF Switch & DC Jack | 7.4V Battery Case
Product Overview
The SPIDER Automation 2×18650 Battery Holder with Cover, ON/OFF Switch and DC Jack is an enclosed battery housing designed for portable electronic devices, DIY electronics and custom battery-powered projects. It accommodates two 18650 cylindrical lithium-ion cells in a series-connected arrangement, providing a nominal battery output of 7.4V when used with conventional 3.7V nominal Li-ion cells.
The enclosure features a removable sliding cover secured with a small locking screw, helping keep the battery cells enclosed within the case. An integrated ON/OFF switch provides manual control of the battery output, while the built-in DC jack offers a convenient connection interface for compatible electronic equipment.
The holder also includes a pre-attached cable with tinned wire ends for soldering and circuit integration. With its compact 90 × 43 × 22mm dimensions and black plastic housing, this battery case is suitable for custom portable power arrangements where an enclosed two-cell 18650 battery solution is required.
Technical Features & Construction
- Dual 18650 Battery Capacity: Designed to accommodate two standard-size 18650 cylindrical lithium-ion cells.
- Series Internal Connection: Connects the two battery cells in series to combine their individual voltages.
- Protective Plastic Housing: Enclosed construction helps keep the installed battery cells organized and provides a physical barrier against incidental contact.
- Sliding Battery Cover: Removable sliding cover allows access to the battery compartment for cell installation and replacement.
- Screw Locking Mechanism: A small screw secures the cover in its closed position.
- Integrated ON/OFF Switch: Provides manual switching control for the battery holder output.
- Built-in DC Jack: Provides a DC connection point for compatible power input arrangements.
- Pre-Attached Cable: Supplied cable provides an additional connection option for integration into electronic projects.
- Tinned Wire Ends: The supplier describes the cable ends as pre-tinned for convenient soldering.
Electrical Configuration & Output Details
The holder uses an internal series connection for its two 18650 battery cells. In this configuration, the voltage of both cells is added together to provide a higher-voltage battery supply.
| Electrical Parameter | Value |
|---|---|
| Battery Configuration | 2 Cells in Series (2S) |
| Nominal Voltage per Cell | 3.7V |
| Nominal Pack Voltage | 7.4V |
| Approximate Fully Charged Voltage | 8.4V |
| Internal Connection | Series |
| Output Control | Integrated ON/OFF Switch |
Important Voltage Information: The 7.4V rating represents the nominal voltage of a conventional 2-cell Li-ion series pack. When both cells are fully charged to 4.2V each, the combined voltage can reach approximately 8.4V. The battery holder does not provide regulated 7.4V output, so the connected device must support the complete battery voltage range.
ON/OFF Switch & DC Power Connection
This battery holder combines an integrated ON/OFF switch and a DC power jack to provide convenient power control and an accessible connection interface. The switch allows the battery output to be manually controlled, while the DC jack can be used with a compatible mating DC plug.
- ON/OFF Switching: Manual switching control for the battery-powered circuit.
- DC Jack Interface: Connection point for compatible DC power plugs and equipment.
- Pre-Wired Construction: Integrated wiring reduces the need to assemble the battery holder’s basic connection wiring separately.
- Solderable Wire Ends: Tinned cable ends support connection to suitable circuit terminals.
The supplier does not specify the DC jack’s exact dimensions, polarity, current rating or the internal switching arrangement. Confirm these details before connecting the holder to a device or external power interface.
Enclosed Design & Battery Protection
The battery case features a removable sliding cover with screw locking to keep the installed cells enclosed. This design helps organize the batteries and provides a physical housing around the cells during normal project use.
The compact plastic enclosure is useful for projects where exposed battery cells are not desirable. The cover can be removed when installing or replacing the cells and secured again using the supplied locking arrangement.
- Enclosed Cell Arrangement: Keeps two 18650 cells housed within a single case.
- Removable Cover: Provides access to the battery compartment.
- Screw-Based Locking: Helps secure the sliding cover in place.
- Compact Housing: Supports integration into portable and custom electronic assemblies.
- Organized Battery Installation: Keeps the two-cell battery arrangement contained within the enclosure.
Functional Advantages
- Combined Battery Housing: Holds two 18650 cells in one enclosed assembly.
- Higher Nominal Voltage: Series connection provides a 7.4V nominal battery supply.
- Convenient Power Control: Integrated ON/OFF switch provides manual output control.
- DC Connection Interface: Built-in DC jack supports connection to compatible equipment.
- Secure Cover Design: Sliding cover and locking screw help keep the battery compartment closed.
- Pre-Attached Wiring: Cable with tinned ends simplifies integration into custom circuits.
- Replaceable Batteries: Removable cover allows access to the installed cells.
- Compact Construction: 90 × 43 × 22mm enclosure supports space-conscious designs.
Applications
This 2×18650 battery holder with switch and DC jack can be incorporated into various electronic projects requiring an enclosed two-cell lithium-ion battery supply.
- DIY Electronics Projects: Enclosed battery supply for custom electronic circuits and prototypes.
- Portable Power Projects: Battery housing for compatible portable electronic equipment.
- Arduino-Based Projects: Suitable for compatible development projects when the board’s input voltage requirements are met.
- Embedded Systems: Battery power arrangement for compatible embedded control applications.
- Microcontroller Projects: Power source for suitable microcontroller-based electronic assemblies.
- Robotics Prototypes: Enclosed battery supply for compatible robot controllers and electronic subsystems.
- LED Lighting Projects: Battery housing for suitable LED circuits designed for the available voltage range.
- Wireless Electronics: Power source for compatible wireless development and communication circuits.
- Electronic Control Systems: Battery supply for suitable low-voltage control and automation prototypes.
- Portable Instrumentation: Enclosed battery arrangement for compatible measuring and monitoring devices.
- DIY Power Supply Assemblies: Two-cell battery source for custom power projects.
- Educational Electronics: Useful in electronics training, laboratory demonstrations and student projects.
- Custom Enclosures: Suitable for integration into equipment requiring a removable two-cell battery compartment.
Package Contents
- 1 × 2×18650 Battery Holder with Cover, ON/OFF Switch and DC Jack
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | Enclosed 18650 Battery Holder |
| Battery Compatibility | 18650 Lithium-Ion Cells |
| Battery Quantity | 2 Cells |
| Internal Connection | Series (2S) |
| Nominal Output Voltage | 7.4V |
| Approximate Fully Charged Voltage | 8.4V |
| Housing Material | Plastic |
| Housing Colour | Black |
| Battery Cover | Removable Sliding Cover |
| Cover Locking | Small Screw Locking Mechanism |
| ON/OFF Switch | Yes |
| DC Power Jack | Integrated (exact size and polarity not specified) |
| Cable Connection | Pre-Attached Wire with Tinned Ends |
| Cable Length | 12cm (supplier specification table) |
| Tinned Wire End Length | Approximately 5mm (supplier description) |
| Length | 90mm |
| Width | 43mm |
| Height | 22mm |
| Dimensions (L × W × H) | 90 × 43 × 22mm |
| Product Weight | 35g |
| Shipping Weight | 0.037kg |
| Shipping Dimensions | 8 × 4 × 3cm (supplier-listed) |
Connection & Operating Recommendations
- Use Matching 18650 Cells: Install two compatible Li-ion cells with the same chemistry, nominal voltage, capacity and similar condition.
- Check Battery Polarity: Insert both cells according to the polarity markings and internal contact arrangement.
- Verify Voltage Compatibility: Ensure the connected device can safely accept the battery pack’s operating range, including approximately 8.4V at full charge.
- Check DC Jack Compatibility: Confirm the mating plug dimensions, electrical polarity and current requirements before connecting external equipment.
- Verify Cable Connections: Identify the positive and negative conductors before soldering or connecting the tinned wire ends. Do not assume wire colours or polarity.
- Use the ON/OFF Switch Correctly: Operate the switch to control the holder output. Do not exceed its unspecified current rating.
- Use a Suitable 2S BMS: A properly rated 2S battery management system is recommended for battery pack protection, balancing and safe operation as required by the pack design.
- Use a Compatible Charger: Charge a conventional 2S Li-ion pack using a suitable 8.4V CC/CV charging arrangement with appropriate protection.
- Secure the Battery Cover: Ensure the sliding cover is correctly positioned and the locking screw is secured after installing the cells.
- Avoid Short Circuits: Keep exposed wire ends and electrical connections insulated and away from conductive objects.
Important: This holder is a battery housing and connection assembly. It is not a voltage regulator, charger or confirmed battery protection circuit. The ON/OFF switch and DC jack ratings, DC jack polarity and internal protection features have not been specified by the supplier.
