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Smart Buyer

Buy Smart — What to check before you buy chargers, bulbs, inverters and tools.

1 of 10 lessons out · next: LED bulb: buy lumens, not watts; look for the BIS mark

▶ Start lesson 1
  1. 01 Smart Buyer: power bank, mAh vs WhmAh is counted at 3.7 V: 10,000 mAh = 37 Wh; after the 5 V boost about 6,000 mAh reach the cable (rated capacity). EP.65 · 24 s
  2. 03 PLANNEDInverter for your home: VA, watts and backup hoursInverter for your home: VA, watts and backup hours.
  3. 04 PLANNEDPhone charger: watts, USB PD, and why the cable mattersPhone charger: watts, USB PD, and why the cable matters.
  4. 05 PLANNEDExtension board: 6 A vs 16 A, and why heaters burn cheap boardsExtension board: 6 A vs 16 A, and why heaters burn cheap boards.
  5. 06 PLANNEDStabilizer: does your fridge or AC still need one?Stabilizer: does your fridge or AC still need one?
  6. 07 PLANNEDStar rating: how many units a 5-star AC really savesStar rating: how many units a 5-star AC really saves.
  7. 08 PLANNEDYour first multimeter: auto-range, CAT rating, continuity beepYour first multimeter: auto-range, CAT rating, continuity beep.
  8. 09 PLANNEDYour first soldering iron: temperature control beats wattsYour first soldering iron: temperature control beats watts.
  9. 10 PLANNEDMCB vs old rewireable fuse for your homeMCB vs old rewireable fuse for your home.