DIY Handheld Lamp: A3 Battery LED Upgrade

If you are interested in a DIY handheld lamp, you may want to take a look at this article.

Suppose you happen to have several A3 drill batteries that you rarely use. If you also happen to have an A3 handheld lamp housing and a few LEDs, you can have a sudden idea and use these materials to modify it into a practical handheld lamp.

This is the base of the unused handheld lamp.

First, you add two lamps. The upper one is from an electric vehicle and provides both warm yellow and white light, with a measured power of 17W. The lower one is a floodlight-style white LED lamp, with a measured power of 7W.

Then you use the original switch to control the floodlight LED, and you add a two-position switch to control the warm yellow and white light. The modification is complete.

You can try turning on the lights and take a look. The result is very good, and it feels like it has met your expectations.