Portable lamp

I have made a portable lamp out of a normal 230V lamp.
I bought the lamp at Aldi I think.
Then removed the 230V cable and installed a LED pcb, a Lion battery and a charge and driver board.


The battery is from an old PC so I do not know the capacity. It are 18650 cells and I  use 3 cells in parallel, so the nominal voltage is 3.7 V (3.0 – 4.2 V).

The old hole for the 230V cord is now the hole for the micro USB charging plug.

For charging the battery and LED lamp driving I use a cheap China board found on eBay. It has a micro USB charging (5V to 3.7 V) and a step up regulator (3.7 V to 12 V) on one board.
On eBay search for “USB 18650 Battery Charger Module Boost Step Up”.
It cost only $ 1.25.

The used light source is a 12 V DC, G4,  2,1 W,  203 lumen, which I bought at jemogfix. I removed the connector and connected it directly  after the diode bridge to save same voltage losses. The G4 is glued to the 230V socket in the lamp by hotmelt.

Min private hjemmeside