DropIt Battery DEMO

Turn a lighting rig into a power answer.

Build the rig once — then ask it either question: how long will the quoted batteries last, or what should I rent. Planning estimates only; verify on a meter.

01 — The Rig

Build your rig

Wattage = maximum AC draw (HMI = ballast input VA). Tap a fixture to add it.
Your rig — empty
Battery scope
02 — Assumptions

Concept of operations

Shoot length · hours onhow long the rig runs
10h
Avg utilization · dutyrealistic day, not full blast
Reserve · bufferfail toward a bigger battery
▶ Advanced — efficiency · depth of discharge · inrush
Fixture type in rigStrike inrush ×
Add fixtures to see their inrush.

Strike inrush × drives the surge requirement — the worst single fixture striking at a time. LED ≈ 1×; electronic HMI ballasts ~2× (older magnetic 4–8×); cold tungsten 10–15× for ~100 ms. Note: tungsten on a shared dimmer channel can strike as a group — sequence power-up, or size surge up.

03 — The Answer

Compare batteries

Sizing method & assumptions ▾

Peak = Σ max draw × qty — every fixture at full. Average = peak × duty. Surge = peak + worst single strike, where a strike adds maxW × (inrush − 1). Energy = average × hours ÷ efficiency. Required capacity = energy × reserve.

Runtime = usable Wh × efficiency ÷ average load. Usable = nameplate × the lower of your DoD floor and the unit’s rated DoD. “To empty” is shown only as a footnote — never plan to zero.

HMI wattage is ballast input VA, not lamp watts. Self-powered fixtures (Astera tubes, etc.) are excluded from sizing — plan their charging separately. Batteries are screened on four axes: energy, continuous power, surge headroom, and voltage.

Planning estimates only — manufacturer figures vary and inrush data is largely unpublished. Verify with a true-RMS power analyzer before committing a rental.