4 Cell 18650 SeriesParallel DIY Li Battery Box Power Bank Cases Battery Slot ...

4 Cell 18650 Series-Parallel DIY Li Battery Box Power Bank Cases Battery Slot Holder Storage Case

• 【Integrated Design with Easy Installation】This lithium battery box is designed with 4 slots for 18650 batteries, featuring KF8500-8.5 terminals integrated into a PCB board. The design allows for hassle-free installation and removal without soldering, using just a screwdriver to secure wiring. This provides a seamless experience for both beginners and professionals handling battery packs.
• 【Flexible Wiring Options for Custom Setups】Our battery holder supports versatile configurations, allowing batteries to be connected in series or parallel. You can set up configurations like 4 in series, 4 in parallel, or mixed setups like 2 in series followed by parallel. This flexibility lets you tailor the power bank to specific voltage and capacity needs, ensuring optimal performance for various applications.
• 【Enhanced Capacity and Voltage Management】By using the 4 parallel connection method, the battery box maintains voltage while quadrupling capacity. Alternatively, the two parallel followed by two series configuration doubles both capacity and voltage. Such customization ensures that your power bank aligns precisely with your energy requirements, maximizing efficiency and functionality.
• 【Compatibility with Protection Boards】The battery case is compatible with 1 to 4 lithium battery protection boards, allowing for safe and efficient operation. This compatibility ensures your battery pack remains protected against overcharge, over-discharge, and short circuits, providing peace of mind and extending the lifespan of your power bank.
• 【User-Friendly Design for Secure Connections】Each battery slot is individually linked to the terminals, ensuring secure and independent connections. With a focus on safety, the design requires consistent wire thickness when connecting in series and parallel. The 3mm mounting holes further facilitate secure installations, enhancing reliability during use.

18650 battery boxes and KF8500-8.5 terminals are integrated into a PCB board,
which is convenient for the installation and removal of 18650 batteries and the wiring of the positive
and negative poles of the batteries.
Use a screwdriver to tighten and loosen the wires directly on the terminals without soldering the wires to the PCB board.
Each 18650 battery box corresponds to the terminal one by one and is separated from each other.
Up to 4 18650 batteries can be installed at the same time.
Flexible wiring can be performed to allow the battery pack to be connected in series and parallel,
such as 4 in series, 4 in parallel, 3 in series, 3 in parallel, 2 in series, 2 in parallel,
two in parallel and then two in series, and two in series and then two in parallel.
Mounting hole: 3mm
1, four parallel connection method: the total capacity of the battery becomes 4 times, the voltage is unchanged
B1+, B2+, B3+, B4+ are connected, B1-, B2-, B3-, B4- are connected,
and the positive poles of the batteries are facing the terminals when they are installed.
2, first two parallel and then two series connection method:
the total capacity of the battery becomes 2 times, the voltage becomes 2 times
B1+ is connected to B2+, B3+ is connected to B4+,
B1- is connected to B2-, B3- is connected to B4-, B2- is connected to B3+,
and the positive poles of the batteries are facing to the terminals when they are installed.
3, four series connection method: the total capacity of the battery remains unchanged,
the voltage becomes 4 times
B1-connected to B2+, B2-connected to B3+, B3-connected to B4+,
the positive poles of the batteries are facing the terminals when installing.
4、Two strings and then two parallel connection method:
the total capacity of the battery becomes two times, the voltage becomes two times.

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