Product Overview
BeiLaMoo 18650-PC8 Four-Cell 18650 Battery Holder - 8-Pin Through-Hole PCB Mount, Series or Parallel Wiring
Condition
Unused NOS. Part of the PartsMine house line, stocked new and sold by the piece. Black molded thermoplastic body with legible BeiLaMoo and 18650-PC8 markings on the upper face. All eight through-hole pins present. Spring contacts intact at all four cell positions. Polarity and SERIES/PARALLEL labels molded in clearly.
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Product Overview
BeiLaMoo 18650-PC8 is an 8-pin through-hole PCB-mount battery holder sized for four 18650 lithium-ion cells. Each of the four slots connects independently through two dedicated pins, so the wiring configuration - series, parallel, or a combination - is set by the PCB traces and battery orientation rather than fixed inside the holder. Polarity and SERIES/PARALLEL orientation labels are molded directly into the body. Compatible footprint matches the standard used by the MPD BK-18650-PC8.
Key Features
- Holds four 18650 lithium-ion cells - optimized for protected cells
- 8-pin through-hole PCB mount - 2 independent pins per slot for individual cell access
- Non-interconnected slots - series or parallel wiring determined by PCB layout and cell orientation
- SERIES/PARALLEL and +/- polarity markings molded into the body in English and Chinese
- Nickel-plated metal spring contacts at all four positions
- Black molded thermoplastic body with ribbed side walls and corner mounting posts
- Standard footprint - cross-references to MPD BK-18650-PC8
Applications
- Maker soldering a 4-cell holder into a custom PCB for a Meshtastic off-grid radio node, then slotting in four protected 18650s before sealing the enclosure
- Hardware prototyper integrating the holder into a BMS test fixture - individual pin access per slot lets balance leads connect to each cell independently for charge and discharge monitoring
- DIY Powerwall builder adding a modular cell section to a salvaged-cell battery array, using the PCB mount to keep connections clean and cells swappable
- Hobbyist building a custom portable speaker or power bank on a hand-routed board, configuring two cells in series and two in parallel for target voltage and capacity
- Robotics or IoT developer prototyping a rechargeable onboard power supply without soldering directly to lithium cells
Frequently Asked Questions
Does this holder fit unprotected 18650 cells?
The holder is sized for protected 18650 cells, which run approximately 65mm to 67mm in length due to the integrated protection circuit board. Standard flat-top unprotected cells are shorter and may sit loosely against the spring contacts. Fit depends on the specific unprotected cell you are using.
What PCB footprint does this use?
The 8-pin through-hole layout matches the standard footprint used for the MPD BK-18650-PC8. Verify your PCB layout against that reference before ordering.
Can I wire the cells in series, parallel, or both?
Yes. Each slot connects independently through two dedicated pins. The wiring configuration is determined entirely by your PCB traces and how you orient each cell - the holder itself does not fix series or parallel. SERIES/PARALLEL orientation labels are molded into the body to guide cell placement.
Are cells or a PCB included?
Not included. This listing is for the holder only. Cells and a compatible PCB are required separately.
Is this suitable for high-drain applications like power tools or e-bikes?
Spring-contact holders have higher contact resistance than soldered tabs. For applications drawing sustained high current, review your system's current requirements against the contact rating for your specific build. This holder is well suited for moderate-drain portable devices, IoT nodes, and BMS prototyping rigs.
Four slots, eight pins, and a footprint that plays by the rules - the rest of the circuit is up to you.
