Battery Health Light (LM393)

1. Prepare

Verify component pinouts against each manufacturer’s datasheet before wiring. Label cut wires with their wire numbers; the same numbers follow them through every stage. Wire colors are written out for black-and-white printing. Custom colors can be named in the wire library.

Progress is saved on this browser for this board revision. Changes to the board or measurements start a new checklist. Printed diagrams are references, not life-size templates.

17 wires to prepare; 461mm total wire, including end allowances.

Parts List

12 unique parts

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2. Cut wires

17 wires · +5mm per end for lead-through

Total wire: 461mm (18.1in)

3. Bend wires

Use the straight-line ruler to mark bend points on the wire before bending. Use the bent shape as a visual reference while bending.

Wire 1 — GRN_DRV — L22 → G23 — 25mm — Red

Cut 25mm. Bend 90° left at 8mm.

Wire 2 — RED_A — D26 → F26 — 15mm — Yellow

Cut 15mm.

Wire 3 — GRN_A — L26 → H26 — 20mm — White

Cut 20mm.

Wire 4 — RED_DRV — D22 → E20 — 18mm — Green

Cut 18mm. Bend 90° right at 10mm.

Wire 5 — TH_HIGH — E18 → G19 — 18mm — Blue

Cut 18mm. Bend 90° down at 10mm.

Wire 6 — TH_LOW — H13 → J22 — 38mm — Black

Cut 38mm. Bend 90° down at 10mm.

Wire 7 — VSENSE — J11 → H19 — 35mm — Red

Cut 35mm. Bend 90° left at 25mm.

Wire 8 — VSENSE — K12 → H23 — 46mm — Yellow

Cut 46mm. Bend 90° down at 8mm. Bend 90° left at 35mm.

Wire 9 — VBAT — E6 → E4 — 15mm — White

Cut 15mm.

Wire 10 — VBAT — F7 → J7 — 20mm — Green

Cut 20mm.

Wire 11 — VBAT — L7 → L19 — 40mm — Blue

Cut 40mm.

Wire 12 — VBAT — K18 → E22 — 34mm — Black

Cut 34mm. Bend 45° down-left at 18mm. Bend 45° down at 21mm.

Wire 13 — VBAT — F23 → G26 — 19mm — Red

Cut 19mm. Bend 45° down-right at 10mm.

Wire 14 — GND — C6 → H3 — 30mm — Yellow

Cut 30mm. Bend 90° right at 13mm.

Wire 15 — GND — I4 → M6 — 25mm — White

Cut 25mm. Bend 90° down at 15mm.

Wire 16 — GND — D7 → H17 — 40mm — Green

Cut 40mm. Bend 45° down-right at 20mm.

Wire 17 — GND — G16 → I19 — 23mm — Blue

Cut 23mm. Bend 90° down at 10mm.

4. Place wires

Component side. Select a wire to emphasize its route in its own color and highlight its endpoints. Wires follow number order, matching the bend guide and solder checklist.

5. Solder connections

Bottom view: horizontally mirrored. Coordinate names still identify the same physical holes. Highlights mark wire endpoints; wire routes belong on the component side. Check each connection and the listed solder bridges.

Board is horizontally mirrored. Column A is on the right.