I am reading "Make Electronics - 2nd edition" by Charles Platt, and I am looking at batteries in series in parallel right now. There's a sentence I really can't understand:
Figure 1-73. Batteries in parallel, powering the same load as before, will run it for for about twice as long. Alternatively, they can provide twice the current for the same time as a single battery.
What puzzles me is the last part: if the V stays the same, how can the battery provide twice the current for the same time? Are we talking about an implicit resistance drop (but in that case I wouldn't need the second battery, would I?), or what, exactly?