Quote:
Originally Posted by IDguy
Not a myth for me. Get two nights heating w 6 v vs. one night w 12. They have nearly twice the amp hours.
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Yep, 6 volt batteries that are the same size as 12 volt have double the amp-hours................... at 6 volts.
So you need two of them in series to get 12 volts - now you have the same number of amp-hours.....................................at 12 volts. which is exactly the same as putting those two 12 volt batteries in parallel.
Amp-hours is a useless unit without the voltage associated with it. To really measure the "capacity" of a battery you have to state how much energy it stores in Watt-Hours.
A common deception in marketing 12 Volt Lithium battery packs/"solar chargers" is to state the Amp-Hours of the pack based on the single Lithium cell voltage (plus they use milliamp-hours to make the number much larger) of 3.6 volts instead of the implied 12 volts, so the number is 3 times as large.
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