Will your ESP32 sensor last a week or a season?

What you get

• Real runtime, in months Capacity, wake interval, awake time and active current — the four numbers that actually decide it, on sliders you can drag.
• The standby-current comparison The same sensor on a typical dev board, a bare module and the Sprig-C3, side by side. The gap is bigger than most people expect.
• Average draw and recharges per year The two numbers to quote when someone asks whether the project is practical.
• No spreadsheet, no datasheet hunting The maths is done. You bring your project; it tells you how long it lives.