4-Slot 18650 Battery Holder Case with Bare Wire Leads (14.8V Series)

When building custom power solutions, you need a secure and accessible way to house your lithium-ion cells without permanently spot-welding them together. The 4-Slot 18650 Battery Holder Case provides a rugged, reusable enclosure for four standard 18650 batteries. Pre-wired in a series configuration, this holder instantly combines the voltage of four 3.7V cells to deliver a formidable 14.8V nominal output (peaking at 16.8V fully charged), making it the perfect foundation for medium-power DIY projects.

Constructed from impact-resistant ABS plastic, this case is designed to withstand the rigors of a busy workbench or mobile field deployment. It features heavy-duty, nickel-plated steel springs that maintain constant, firm pressure against the battery terminals, ensuring a low-resistance connection that won't drop out during vibration or movement. Terminated with pre-stripped bare wire leads, it is ready to be soldered directly to your custom PCB, wired into a 4S BMS protection board, or plugged straight into a breadboard.

Key Features & Functional Advantages:

• Instant 14.8V Power: Internally wired in series, converting four individual 3.7V cells into a powerful 14.8V power supply without the need for specialized spot-welding equipment.

• Heavy-Duty Spring Contacts: Nickel-plated coil springs provide a tight, secure grip on both flat-top and button-top 18650 cells, minimizing electrical resistance and preventing accidental disconnects.

• Durable ABS Construction: The rigid plastic chassis is tough enough to be mounted inside 3D-printed project enclosures, strapped to robotic frames, or deployed in outdoor telemetry nodes.

• Flexible Mounting Options: Designed with a flat bottom and recessed screw holes, allowing you to easily secure the holder to structural panels using M3 screws, double-sided tape, or hot glue.

• Reusable Design: Unlike welded battery packs, this holder allows you to easily pop out depleted cells and snap in a fresh set, or safely remove the batteries for dedicated balancing in a smart charger.

Perfect For:

• DIY 14.8V Battery Packs: The ideal physical housing to pair with a 4S BMS protection board when building custom, rechargeable power supplies for heavy-duty electronics.

• Custom Robotics: Easily powers 12V to 14V DC gear motors and high-torque servos in autonomous rovers and hexapods.

• Off-Grid IoT & Telemetry: An excellent, easily serviceable main power bank for remote environmental sensors, solar-supplemented data loggers, and energy metering arrays.

• Portable Lighting & Audio: Provides extended runtime for high-wattage LED floodlights and custom-built portable Bluetooth amplifiers.

Technical Specifications:

• Battery Compatibility: Holds 4 x 18650 Lithium-Ion Cells (Supports both Flat-Top and Button-Top)

• Wiring Configuration: Series (Internal)

• Nominal Output Voltage: 14.8V (3.7V x 4)

• Fully Charged Voltage: 16.8V (4.2V x 4)

• Connection Type: Bare Wire Leads (Red for Positive / Black for Negative)

• Wire Length: Approximately 15cm (6 inches)

• Housing Material: High-Impact Black ABS Plastic

• Contact Material: Nickel-Plated Steel

• Approximate Dimensions: 78 mm x 80 mm x 21 mm (L x W x H)

Ensure your order is placed by 2PM to guarantee next-day delivery! Our commitment to prompt service includes a 24-hour delivery system through our network of carriers, aimed at ensuring your package arrives right on schedule.

Please note, a delivery fee of €4.99 applies for orders under €50. For those in remote areas, be aware that our couriers may apply an extra surcharge. This additional fee helps cover the costs of transporting your items to harder-to-reach locations.