HardLabs

Battery charger

eshazen·StudentProjects2025·BlueBikes/battery_charger/battery_charger.kicad_pcb

Battery charger PCB layout, top view — open source board by eshazen

About the Battery charger PCB

Battery charger is an open source PCB design by eshazen, published on GitHub. It is a 2-layer board measuring 40.6 × 24.1 mm, with 6 components from 6 distinct parts.

Other key parts include the LM317_TO-220. By type, the board carries 3 resistors, 2 connectors and 1 IC.

It belongs with the power & battery designs in this gallery.

From the project

Student project docs for spring 2025

Main components on the Battery charger

LM317_TO-220

Battery charger bill of materials (BOM)

6 components, 6 distinct parts.

QtyPartRefs
1
LM317_TO-220
U1
1
Barrel_Jack
J1
1
Conn_01x02
J2
1
237
R1
1
1.3k
R2
1
4.7 Ohm
R3

Battery charger design files

The KiCad project lives in the eshazen/StudentProjects2025 repository on GitHub; these links point at the commit this page was built from.

Battery charger: common questions

How big is the Battery charger PCB?

The Battery charger measures 40.6 × 24.1 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Battery charger?

6 components, from 6 distinct parts. The full bill of materials is listed on this page.

Where can I download the Battery charger design files?

From the eshazen/StudentProjects2025 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Battery charger design in my own project?

The repository has no license, so all rights stay with eshazen. Use it as a reference, and ask the author before reusing the design.

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