Timeline for portable power supply
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 22, 2018 at 9:06 | answer | added | Dorian | timeline score: 0 | |
| Oct 21, 2018 at 20:47 | answer | added | Ale..chenski | timeline score: 0 | |
| Oct 21, 2018 at 17:23 | comment | added | user57037 | Your math is OK. Your terminology is a bit off (as TimWescott says). But sometimes the ratings on devices like this are the maximum rather than the average. Average is what you would want to use for sizing the battery pack. So it would be nice to measure the actual power usage somehow. You might not really need to supply 288 Wh. Also, if you use an LED lamp, you will likely only need 1W or at most a few W. So the battery could be much smaller. I wonder if your wife's light uses an incandescent bulb? Can the bulb be changed? Anyway, good luck. | |
| Oct 21, 2018 at 17:08 | answer | added | TimWescott | timeline score: 2 | |
| Oct 21, 2018 at 17:04 | comment | added | user80875 | You are correct, you need 36 Wh or 24,000 mAh at 12 volts. The lamp uses 36 watts or 36 joules per second, not 36 watts per hour or 36 joules per second per hour. | |
| Oct 21, 2018 at 16:50 | review | First posts | |||
| Oct 21, 2018 at 17:25 | |||||
| Oct 21, 2018 at 16:47 | history | edited | SamGibson♦ | CC BY-SA 4.0 |
Split text into paragraphs to improve readability.
|
| Oct 21, 2018 at 16:45 | history | asked | Craig A | CC BY-SA 4.0 |