Power & Battery
AirLeak Pro's 18650 rechargeable cell, USB-C charging, and how power is managed.
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AirLeak Pro runs from a single 18650 rechargeable cell in an on-board holder, and charges over USB-C. It can also run directly from USB while it charges.
Which cell to buy
Fit a standard 18650 lithium-ion cell (nominal 3.7 V). A protected, flat-or-button-top cell from a reputable brand is recommended, avoid unbranded, swollen, or damaged cells. The Pro holds one cell; capacity (mAh) only affects how long it runs, not whether it fits.
Battery
- Cell
- 1x 18650 lithium-ion, on-board holder, user-supplied
- Charging
- USB-C, on-board charger
- Powered charging
- Runs while charging, seamless switch between USB and battery
- Power switch
- Slide switch, cuts power fully
The 18650 cell is user-supplied
AirLeak Pro ships without a cell. Drop a standard 18650 lithium-ion cell into the holder, matching the + and − printed on the board next to the holder — the flat, spring-loaded end is negative and the button end is positive. The spring contact only makes good contact when the cell is the right way round.
Charging and running at once
The on-board charger includes a power path, so AirLeak Pro can run and charge at the same time and switch between USB power and the battery without interrupting a scan. Plug into USB during a long stationary survey and the device keeps running while it tops up.
Battery level in the app
The app shows the current battery level so you can plan a session. When you finish, the slide switch cuts power completely, there is no background drain.