SPIDER Automation | 2×18650 Battery Holder with DC Barrel Jack | Series-Connected Battery Power Supply
Product Overview
The SPIDER Automation 2×18650 Battery Holder with DC Power Plug is a compact battery enclosure designed to accommodate two standard 18650 lithium-ion cells in a series configuration. It provides a convenient battery-powered supply arrangement for compatible Arduino boards, embedded systems, electronic prototypes and portable projects.
The holder comes with an approximately 5-inch (127mm) cable terminated with a standard 5.5×2.1mm DC barrel plug. The connector has a centre-positive polarity, making it suitable for equipment with a matching DC socket, voltage requirement and current requirement.
Its black plastic enclosure provides a structured housing for the two battery cells, helping keep them organized within a project. The compact dimensions of 76×40×20mm make it convenient for various battery-powered electronic assemblies.
Technical Features & Construction
- Two-Cell Battery Housing: Designed to accommodate two 18650 cylindrical lithium-ion cells.
- Series Internal Connection: The two battery positions are connected in series to provide a combined voltage output.
- Black Plastic Body: Features a plastic enclosure for holding and organizing the battery cells.
- Integrated DC Output Cable: Supplied with a pre-attached cable for convenient power connection.
- Standard Barrel Connector: Uses a 5.5×2.1mm DC barrel plug.
- Centre-Positive Output: The DC plug is specified with positive polarity at the centre contact.
- Compact Enclosure: Its 76×40×20mm dimensions support integration into compact electronic projects.
- Project-Friendly Design: Provides a ready-to-connect battery holder arrangement without requiring a separate output connector to be installed.
Electrical Configuration & Output Details
This holder connects two 18650 lithium-ion cells in series. In a series configuration, the voltage of the two cells is added while the available capacity in ampere-hours remains approximately that of one cell, assuming matched cells.
- Nominal Output Voltage: Approximately 7.4V when using conventional 3.7V nominal 18650 lithium-ion cells.
- Fully Charged Voltage: Approximately 8.4V with two conventional 4.2V maximum-charge cells.
- Internal Connection: Series (2S).
- Output Connector: 5.5×2.1mm DC barrel plug.
- Connector Polarity: Centre-positive.
Important: The holder does not regulate or stabilize the battery voltage. The connected device must support the full battery voltage range, including approximately 8.4V immediately after a full charge. A suitable 2S battery protection and charging arrangement should be used where required.
DC Connector & Cable Details
- Connector Type: DC male barrel plug.
- Connector Dimensions: 5.5mm outer diameter × 2.1mm inner diameter.
- Polarity: Centre-positive.
- Cable Length: Approximately 5 inches (127mm).
- Connection: Designed for compatible DC barrel power sockets.
Before connecting the holder to an Arduino board or another electronic device, confirm that the device supports the battery’s operating voltage range, connector dimensions, polarity and required current.
Applications
This dual 18650 battery holder can be used in electronic projects that require a compact series-connected battery supply with a standard DC barrel plug output.
- Arduino Projects: Battery power for compatible Arduino boards with a matching DC input and supported voltage range.
- Embedded Systems: Portable power arrangements for embedded controller projects designed for a suitable 2S battery supply.
- Electronics Prototyping: Convenient battery power for prototype circuits and development setups.
- Robotics Projects: Battery supply for compatible robot controllers and electronic subsystems.
- Portable Electronic Devices: Power source arrangement for devices designed to accept the holder’s voltage range and connector.
- DIY Battery-Powered Projects: Integration into custom electronic builds requiring two 18650 cells in series.
- Microcontroller Applications: Powering compatible microcontroller development systems through a suitable DC input.
- IoT Prototypes: Battery-powered IoT development projects with appropriate voltage regulation where required.
- Educational Electronics: Battery supply for electronics learning, demonstrations and practical circuit-development projects.
- Portable Instrumentation: Power arrangements for compatible electronic measurement and monitoring equipment.
- Wireless Control Projects: Battery power for suitable wireless control systems and electronic modules.
- Electronic Testing Setups: Portable power for compatible circuit-testing and development assemblies.
Package Contents
- 1 × 2×18650 Battery Holder: Black plastic enclosure with series-connected battery positions and attached DC barrel plug cable.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | 2×18650 Battery Holder with DC Power Plug |
| Battery Compatibility | 18650 Lithium-Ion Cells |
| Number of Battery Cells | 2 |
| Internal Connection | Series (2S) |
| Nominal Output Voltage | 7.4V (with conventional 3.7V nominal Li-ion cells) |
| Fully Charged Voltage | Approximately 8.4V (with conventional 4.2V maximum-charge cells) |
| Output Connector | DC Male Barrel Plug |
| DC Plug Size | 5.5×2.1mm |
| Connector Polarity | Centre-Positive |
| Cable Length | Approximately 5 inches (127mm) |
| Housing Material | Plastic (specific grade not provided) |
| Colour | Black |
| Product Dimensions | 76×40×20mm (L×W×H) |
| Product Weight | 18g |
| Shipping Weight | 0.02kg |
| Shipping Dimensions | 7×6×3cm |
| Package Contents | 1× 2×18650 Battery Holder with DC Power Plug |
Connection & Operating Recommendations
- Use Compatible Cells: Install two compatible 18650 lithium-ion cells with matching chemistry, capacity, condition and charge level.
- Observe Battery Polarity: Insert both cells according to the polarity markings inside the holder.
- Check Input Voltage: Ensure the connected device can accept the battery voltage from approximately 8.4V when fully charged down to its specified operating limit.
- Confirm Connector Compatibility: Verify the 5.5×2.1mm barrel socket dimensions and centre-positive polarity before connection.
- Use Suitable Protection: Use an appropriate 2S battery protection circuit and compatible charger where required.
- Check Current Requirements: The holder’s current rating is not specified. Ensure the complete battery and holder assembly is suitable for the connected load.
- Avoid Direct Charging: Do not connect a charger directly to the holder’s output plug unless the charging arrangement is specifically designed for a 2S lithium-ion battery pack.
