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// MYTH OR FACT · ✓✗

Myth or Fact

Electronics Myths Busted — Popular beliefs about phones, power and safety, tested.

3 of 10 lessons out · next: Drain your battery to 0 % before charging

▶ Start lesson 1
  1. 01 Myth or Fact: charging overnight kills your batteryMOSTLY MYTH: the phone stops at 100 %; heat and sitting at 100 % age it a little (many phones now pause at 80 %). EP.62 · 24 s MOSTLY MYTH
  2. 02 Myth or Fact: fast charging damages your batteryMOSTLY MYTH: the phone controls the current and slows down near full; heat is the real enemy. EP.68 · 24 s MOSTLY MYTH
  3. 03 Myth or Fact: "A TV on standby uses no power"MYTH: standby still uses about 0.5–1 W, every hour of the year. EP.74 · 24 s MYTH
  4. 05 PLANNEDA 20,000 mAh power bank charges a 5,000 mAh phone 4 timesMYTH: mAh is at 3.7 V and losses are ~30–40 % → about 2.5 times.
  5. 06 PLANNEDIt's the voltage that kills, not the currentHALF TRUE: current through the body does the harm, but voltage is what pushes it through your skin.
  6. 07 PLANNEDRubber slippers make you 100 % safe from shockMYTH: wet or worn soles conduct, and touching two wires bypasses your feet.
  7. 08 PLANNEDLED bulbs don't get hotMYTH: the driver and heatsink get warm, just far cooler than an old bulb.
  8. 09 PLANNEDUsing your phone while it charges is dangerousMYTH with a good charger and cable; the real danger is cheap fake chargers.
  9. 10 PLANNEDClosing apps saves batteryMOSTLY MYTH: reopening apps from scratch can use more power than keeping them paused.