Is the 12,000mAh referring to the 5V USB or the voltage of the battery inside (should be ~3.7V)?
2 Answers from the Community
The 12,000mAh rating is measured at 3.7V, which calculates to 44.4Wh. With the 5V output and 44.4Wh of power, usable capacity is closer to 8,900mAh (ignoring all resistance etc.). It seems all manufacturers rate their products similarly.
- Answered by Dennis J from Fairport
- Feb 24, 2014
- Flag as inappropriate Answer 1
No, mAh or milliamperes per hour is a measure of how much current can be drawn over a specified period of time(usuall 1 hour). Quick example, a device draws 4000mAh while charging, a battery rated for 4000mAh will deliver this for 1 hour. A battery rated for 12000mAh will provide 4000mAh for 3 hours give or take. Hope this helps.
- Answered by Shawn P from Fountain
- Jan 25, 2014
- Flag as inappropriate Answer 2
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- Asked by Barbara E. E from Waban
- Oct 7, 2012
- Flag as inappropriate (Do these have a battery in them?)
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