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2-Slot 18650 Battery Holder
40.00৳ 60.00৳ (-33%)
This 2-Slot 18650 Battery Holder is specifically wired in parallel to provide a constant 3.7V output while doubling the available capacity (mAh) for your electronics.
- Output Voltage: 3.7V (Nominal)
- Capacity: Combined mAh of both cells (Ideal for long-running DIY projects)
- Connectivity: Pre-soldered 6-inch red/black wire leads for easy integration.
- Material: Durable, heat-resistant ABS plastic with secure spring-loaded slots.
- Best For: Arduino/Raspberry Pi power supplies, DIY power banks, and portable LED lighting.
[!IMPORTANT]
Safety Note: Only use batteries of the same voltage and brand to avoid dangerous current surges between cells.
Are you planning to use protected or unprotected 18650 cells with this holder?
2-Slot 18650 Battery Holder
This 2-Slot 18650 Parallel Battery Holder is a specialized DIY component designed to house two 3.7V 18650 lithium-ion cells. Unlike standard holders that double the voltage, this parallel version keeps the output at 3.7V while combining the capacity (amp-hours) of both batteries for significantly longer runtimes.
Technical Specifications
- Battery Type: 2 x 18650 Lithium-Ion cells
- Connection Type: Parallel (Positive to Positive, Negative to Negative)
- Output Voltage: 3.7V (Nominal)
- Material: Impact-resistant ABS plastic with stainless steel springs
- Output Leads: Color-coded 26AWG wire (Red: Positive, Black: Negative)
- Mounting: Integrated screw holes for securing to a chassis or project box
Key Advantages
- Extended Runtime: Ideal for low-voltage projects that need to stay powered for long periods, such as remote sensors or portable LED lamps.
- Stable Voltage: Provides a consistent 3.7V, which is the standard requirement for many microcontrollers and charging modules.
- Plug-and-Play: Pre-tinned wires make it easy to solder directly to a PCB or connect to a breadboard.
Safety Usage Guide
[!CAUTION]
Voltage Matching: You must ensure both batteries are at the same voltage level before insertion. If one is full (4.2V) and one is empty (3.2V), the full battery will charge the empty one at an extremely high, dangerous current.
- Identical Cells: Always use batteries of the same brand, model, and age.
- Polarity: Observe the “+” and “-” markings carefully; a reversed battery in a parallel holder will cause a direct short circuit.
Would you like to know which Battery Management System (BMS) is best suited for this 3.7V setup
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