A battery is considered dead when it drains to a charge near zero. While a battery with a charge of just under 11.5 volts does likely not have enough power to start a vehicle, it is still not completely dead. But when a battery sits too long at a deficient charge (below 11.5V), it will soon become completely dead due to internal sulfation.
Battery drained completely after only one day in sleep mode. One night after playing on the Switch (it still had 70% charge), I left the charger unplugged, and just after one day, the charge went down to 0. This has never happened before, even when it was unplugged for a week.
The lithium-ion battery from a Japan Airlines Boeing 787 that caught fire in 2013. Most lithium-ion battery fires and explosions come down to a problem of short circuiting. This happens when the plastic separator fails and lets the anode and cathode touch. And once those two get together, the battery starts to overheat.
5. votes. Li-Ion degrades with use, so you should prefer shallow discharges. I.e., always charge it as soon as possible. This is in contrast to Ni-Cd and Ni-Mh accumulators, which do like to be fully discharged from time to time to keep their full performance. So normally you should plug in your laptop whenever possible.
By letting the battery rest, you give the reaction products a chance to dissipate. The higher the drain on the battery, the faster the products build up, so batteries under high drain appear to recover more. Many battery-operated appliances use two or four cells in series to create higher voltages. If one of the cells has a problem (for example
When a lithium-ion battery reaches the point of being completely dead, it means that its energy capacity has been drained to zero. This occurs when the voltage drops below a certain threshold, rendering the battery unable to power any device or appliance.
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lithium ion battery drain completely
