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Cartridge Refilling and Refurbishing
Awesome! Please add 2-3 more pictures of wiring as person like me who does not belong to science understood circuit with much difficulty. Its great idea and I have modified it using bigger Jam bottle and battery holder so that battery can easily be replaced as soldering on battery is a difficult process :p I used usb type charger so it can be easily charged with new phones chargers :p
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