> Sadly, he did not say how the batteries were re-charged. Dry-cell batteries had to be changed, they weren't recharged. https://www.reddit.com/r/diyelectroni

> Sadly, he did not say how the batteries were re-charged. Dry-cell batteries had to be changed, they weren't recharged. https://www.reddit.com/r/diyelectronics/comments/y7qmhq/15v_drycell_batterys_in_old_phone/ https://www.reddit.com/r/diyelectronics/comments/y7qmhq/15v_...