Light Stick Battery Life Calculator (hours per set, batteries for a concert tour)

How it works

Runtime (hours) = capacity (mAh) × usable share ÷ current draw (mA). Batteries in a set are wired in series, so the set lasts as long as one cell. Sets needed = show hours × shows ÷ runtime, rounded up. Start each show with fresh cells if you cannot afford the light to dim, and never mix old and new or different-type batteries.

FAQ

Rechargeable or alkaline?

NiMH rechargeables (1.2 V) can be dimmer in devices designed for 1.5 V cells but keep their voltage steadier; check what the light stick manual allows.

Why did my light stick die early?

Bluetooth sync, flashing modes and cold venues all shorten battery life. Measure the current with a meter if you can, or use a lower usable share.

Checked 11 Nov 2026. Battery runtime ≈ rated capacity ÷ load current (Energizer E92/EN92 AAA alkaline data sheets, “Continuous discharge to 0.8 V at 21 °C”, show capacity falling as drain rises). Current draw: the light stick’s manual or a meter reading.