Maker Electronics Math · Chapter 3

Change One Number, and the Year Changes

The single biggest lever in a battery design, drawn out for you.

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Enter your currents and a pack, then press Calculate.
From the book — Chapter 3. cycle = (awake mA × awake s) + one-off + (sleep mA × the rest). Longer intervals buy less and less, because eventually you are only paying for sleep.

Same arithmetic as the battery budget, run at eight intervals instead of one. Everything stays in your browser — no sign-up, nothing stored.