high power 18650 battery case 21700 battery case

20241224 Update:

The printing configuration for the 21700 battery pack High power has been merged into the 18650 battery High power configuration

Designed for high-power applications such as DIY high-performance fans and DIY vacuum cleaners, this design necessitates numerous hardware components. If you do not require high power output, consider using the standard version, which requires only the purchase of battery terminals

Standard version：https://makerworld.com/en/models/539919#profileId-467576

Designed for high-power devices, such as DIY high-performance fans and DIY vacuum cleaners. This design requires a significant number of hardware components. If you do not need high power, you can use the standard version I designed, requiring only battery terminals

Standard version: https://makerworld.com/en/models/539919#profileId-467576

High power 18650 and 21700 battery box design features:

1) The edge design incorporates groove latches, enabling seamless splicing and expansion for flexible series and parallel configurations. For high-power applications, horizontal splicing is recommended over vertical splicing:

High-power 18650 and 21700 battery box design features:

1) The edges feature interlocking grooves, allowing for versatile expansion and connection in series or parallel configurations. For high-power applications, horizontal assembly is recommended over vertical assembly:

2) The positive terminal utilizes M3 * 16mm copper screws and nuts, while the negative terminal employs M3 * 16mm copper screws, tower springs, and nuts to ensure reliable high-power performance

The tower-shaped springs enhance compression, facilitating convenient battery insertion and removal

2) The positive terminal uses M3 * 16mm copper screws and nuts; the negative terminal uses M3 * 16mm copper screws, tower springs, and nuts for robust high-power operation

The tower springs increase the compression ratio, simplifying battery insertion and removal

3) Copper wire connectors are recommended for series and parallel connections and final power output. Alternatively, wires can be secured with an M3 nut if copper terminals are unavailable

3) For series/parallel connections and power extraction, copper wire terminals are recommended. If unavailable, wires can be secured directly with an M3 nut.

4) Screw holes are incorporated into the base for convenient mounting and securing. Screw hole diameter: 2.1mm, spacing: 50mm, countersunk screw head diameter: 4.5mm, depth: 0.8mm. M2 countersunk screws are recommended; a 4mm screw head diameter is sufficient

4) The base includes screw holes for easy installation and secure mounting. Screw hole diameter: 2.1mm, spacing: 50mm, countersunk screw head diameter: 4.5mm, depth: 0.8mm. M2 countersunk screws are recommended; a 4mm screw head diameter will suffice.

The following lists the required hardware components:

1) M3 * 16mm copper screws:

The following is a list of required hardware:

1) M3 * 16mm copper screws:

Pinduoduo link: https://mobile.yangkeduo.com/goods2.html?ps=Dt3JpUBRfE

2) M3 copper nuts:

2) M3 copper nuts:

Pinduoduo link: https://mobile.yangkeduo.com/goods2.html?ps=GKghhSI6Xn

3) 0.6 * 4/8 * 10 tower springs:

3) 0.6 * 4/8 * 10 tower springs:

Pinduoduo link: https://mobile.yangkeduo.com/goods2.html?ps=rYEK2HzrRS

4) OT2-3 wiring copper terminals:

4) OT2-3 wiring copper terminals:

These terminals have a 3.2mm inner diameter, perfectly compatible with M3 screws. Their tin-plated surface facilitates both crimping and soldering, making them a highly recommended option.

Pinduoduo link: https://mobile.yangkeduo.com/goods2.html?ps=BOXLtRm16Z