I’ve noticed this with ipads and iphones. If it’s completely drained and you plug it in, you still can’t turn it on for a few minutes. I don’t know if the battery is part of the standard circuit powering the thing or what.
In: Technology
Electronic devices like phones, tablets or laptops don’t have a constant consumption of power. So when it has to do a lot of things (like startup or play movies and games) the device requires a lot more power than “normal”. For laptops, the chargers are sufficient to run the device at full power mode and still charge the battery. For smaller devices (especially older ones with older USB), the maximum power consumption can exceed the power provided by the charger.
In cases like this, if the phone tried to power up with a fully discharged battery, it would boot up halfway, then shut down since the charger cannot provide enough power to complete the boot up cycle. This becomes an endless cycle of boot up halfway, shut down and then trying to boot up again. To avoid this, manufacturers will design the product that prevents startup until the batteries achieve a charge sufficient to at least get through the startup cycle.
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