I had a power bank sitting next to a tap, and my friend asked me to get it away from water, as the water could enter the power bank and potentially “burn” the insides of it. This got me into thinking how does water ruin circuits when the machine is not running at that moment.
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A power bank stores electric charge in it’s battery. There’s no such thing as “non-running batteries”, the closest you can get to that is having a completely discharged battery, which would be quite bad and kinda impossible to achieve with modern lithium batteries, as they require a minimum voltage level to operate properly, so you’ll always have some kind of electrical potential present.
Water may create a short-circuit that may lead to sparking (fire hazard), quick battery discharge which may generate heat, and generally cause damage to the device.
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