3 ms·
If your 100W light bulb is a USB bulb running at 5V (to make the math a bit easier), with 20 Ah you’ll get 100Wh, ergo it’ll run your bulb for a hour. You just
by mikestew 1y ago
If your 100W light bulb is a USB bulb running at 5V (to make the math a bit easier), with 20 Ah you’ll get 100Wh, ergo it’ll run your bulb for a hour. You just need to specify the voltage. There are numerous online calculators to do this math for you.
https://www.inchcalculator.com/ah-to-wh-calculator/ https://www.inchcalculator.com/ah-to-wh-calculator/
Watt-hours won’t save you, because we don’t know what voltage your bulb needs. Don’t assume it’s 120/240V.
- SR2Z 1y agoI mean, I know what voltage/wattage my devices need. I have no idea what voltage the battery bank is going to offer.
- SamBam 1y ago...by that logic if my 100W bulb is running on 10V, with my same 20Ah I'll get 200Wh, so I'll get a bulb of the same wattage, with the same battery, running twice as long? Magical double energy! ...this is why we should measure the total energy in Wh, not Ah.