4 x 18650 battery charger

After 6 months of waiting the little current meters turned up from Aliexpress so I can now make my 18650 charger.

I used a 4 x version of the holder I posted at DIY 18650 battery holder

I used 4 x the lipo chargers posted at LiPo charger group build? (each set conservatively to 500mA).

I used a cheap LM2596 chinese buck converter to drop 12V to 5V.

The aliexpress link is below, unfortunately these are the 10A meters, not the 1A version but a 10mA resolution is still quite useful.

https://www.aliexpress.com/item/Digital-Mini-Ammeter-Ammeter-of-power-indicator-LED-Red-0-5A-panel-meter/32796860320.html

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