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Personal projects / Sensors & electronics

Headlamp battery modification

A larger external battery supply for a compact headlamp.

3 photographs · Original photo numbers retained

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Modified headlamp

Photos 125–127

Photo 125 — A headlamp with a larger battery supply — Photo 125 · No date found
A headlamp with a larger battery supply
I liked this headlamp’s bright LED, but its small original batteries limited how long I could use it. I adapted it to draw from a larger battery bank, with the aim of extending its runtime. It was a simple packaging and power-supply modification to a light I already enjoyed using.

Photo 126 — Another view of the headlamp modification — Photo 126 · No date found
Another view of the headlamp modification
Another view of the headlamp and its larger power source. My goal was longer use between battery changes, especially for situations where a hands-free light would be needed for an extended period.

Photo 127 — The modified headlamp assembly — Photo 127 · No date found
The modified headlamp assembly
A further view of the battery-bank headlamp project. This was a small practical modification focused on runtime, rather than a redesign of the lamp’s optics or LED.