Baofeng UV-5R UV5R charging charge 18650 battery case

This battery box is suitable for Baofeng UV-5R series handheld radios and has been tested and verified on my own UV-5RB model

simple slim version:

1. It is a slimmed-down version of the battery box with a charging board, removing the charging function to significantly reduce its size, thus creating this simple slim version

2. Adjusted the battery series connection design. Given the difficulty of quickly and accurately welding nickel strips (I myself am not good at welding), a method of connecting electrodes with wires has been added, and space has been reserved for wire storage (for 1.8mm - 20AWG). During operation, the electrodes can be calmly soldered with wires before being pressed in. Wire lengths of about 2cm can be accommodated

3. Others: The electrode spring contact specifications are the same as before. For the contact point between the top electrode and the walkie-talkie contacts, it is still recommended to pre-tin it. PLA and PETG are both suitable printing materials

Full Function Version:

Wiring grooves have been reserved, with B+ and B- leads from the charging module connected to the positive and negative terminals of the battery spring contacts through the grooves

If the balance function needs to be enabled, the BM lead from the charging module should be connected to the battery series side spring contact through the wiring groove

The 3D printer is Bambu Lab A1, and using PLA and PETG materials poses no significant issues

2-series 18650 lithium battery boost charging module (with balance function), dimensions: 31x18mm (excluding the type-c protrusion)

Self-tapping screw specifications for fixing the charging module: M1.4x4 two screws

Recommended connecting wire is 20awg silicone wire. When connecting the positive and negative spring contacts at the bottom in series, a soldering iron is needed to weld nickel strips

Refer to the photos for the wiring scheme. Assembly requires some hands-on skill. Materials used include: a 2-series boost charging module with balance function, a soldering iron, solder wire, nickel strips (2-3cm is enough), 2 sets of single 18650 battery spring contacts, and M1.4x4 self-tapping screws. If poor contact is found at the top positive and negative terminals, a little solder will fix it (pre-tinning is recommended)