Power planning for professional LED lighting is not a question of finding a generic wattage range and deciding that “small lights use batteries” while “large lights use mains”.
The useful questions are more practical: how much electrical power does the fixture actually need, at what voltage, through which connector, with what current capability, for how long, and under which location-power conditions?
Once those questions are separated, mains circuits, V-Mount batteries, DC supplies and generators become much easier to plan — and wattage stops being confused with light output.
Start with the distinction between electrical power and light output
Watts tell you how much electrical power a fixture consumes.
They do not tell you how much useful light reaches the subject.
Optical performance also depends on:
- LED efficacy;
- driver efficiency;
- optics;
- beam angle;
- modifier transmission;
- working distance;
- thermal management.
A lower-wattage fixture with an efficient optical system can produce more useful illuminance in a given beam than a higher-wattage fixture spreading its output much more broadly.
That is why power planning and photometric comparison should be treated as two separate tasks.
Use the fixture’s maximum input requirement for electrical planning
When planning circuits or DC supplies, do not estimate from the dimming percentage you expect to use.
Use the manufacturer’s specified maximum input requirement unless the documentation explicitly provides another design value.
A 600W fixture that normally runs at 30% may still need a power system capable of supporting its full permitted load.
This gives the setup electrical headroom and prevents the power infrastructure from becoming the limiting factor when the creative requirement changes.
Watts, volts and amps are related
For a simple DC system:
Power (W) = Voltage (V) × Current (A)
So a fixture requiring 200W draws very different current depending on the supply voltage.
At approximately 14.8V, 200W corresponds to much more current than the same 200W delivered at 26V or 48V.
This is one reason higher-voltage battery systems can be useful for higher-power fixtures: the same power can be delivered with less current.
Why battery current capability matters
A battery can have plenty of watt-hours and still be unsuitable for a fixture if it cannot safely provide the required current.
Check at least:
- nominal voltage;
- allowed voltage range;
- continuous-current rating;
- peak-current behaviour if relevant;
- connector rating;
- manufacturer compatibility guidance.
Physical fit is not electrical compatibility.
A V-Mount plate tells you how the battery attaches. It does not by itself prove that every V-Mount battery can power every V-Mount fixture at every output level.
Watt-hours estimate runtime, but only approximately
Battery capacity is commonly expressed in watt-hours (Wh).
A simple first estimate is:
runtime ≈ battery Wh ÷ fixture W
But that result is theoretical.
Real runtime is affected by:
- conversion losses;
- fixture efficiency at different operating states;
- battery protection electronics;
- temperature;
- battery age and condition;
- the discharge rate;
- the cut-off voltage used by the fixture or battery.
Use the calculation for planning, then test the real combination before an important production.
Why a 150Wh battery does not automatically run a 150W light for exactly one hour
The arithmetic says one hour, but the complete system is not lossless.
The battery may not make all of its nominal capacity available at the required discharge rate, and the fixture may stop operating before the battery is completely empty.
For production planning, build in margin rather than scheduling the final shot for the theoretical last minute of the battery.
Direct V-Mount changes the complete system
A fixture with direct battery support can remove:
- external battery plates;
- long DC cables;
- separate power boxes;
- additional mounting hardware.
That reduction in components can matter as much as the lamp-head weight itself.
This is why we treat battery architecture as a system-design feature, not just another connector on the specification sheet.
Where Spectra fits
Maxima Spectra is built around a compact battery-first workflow.
Its direct V-Mount architecture allows the AC driver and battery configuration to be swapped rapidly, while the built-in touchscreen includes battery-oriented performance controls.
For a small crew, that can mean moving the entire light without dragging a separate ballast or battery plate through the set.
At approximately 1.4 kg, Spectra is especially relevant when the power system needs to stay physically close to the fixture.
Where Rapida fits
Maxima Rapida follows the same battery-first philosophy in a slightly more rugged location-oriented package.
It can move quickly between grid power and direct V-Mount operation, while its approximately 1.8 kg body and IP54 protection make it particularly useful where the power system needs to remain compact in more demanding environments.
Again, the battery itself still has to meet the fixture’s electrical requirements.
Battery operation does not automatically mean lower output
Some fixtures reduce performance on certain batteries. Others can maintain their normal output when the battery system supplies the required voltage and current.
The correct question is:
What does this specific fixture do with this specific battery?
Do not generalise from one product family to every battery-powered LED light.
Mains power is still the simplest solution for many studios
If a fixture remains in one position for hours, AC power avoids battery swaps and charging logistics.
For permanent or semi-permanent studios, mains operation can simplify:
- long production days;
- repeatable sets;
- multi-fixture operation;
- central power distribution.
That does not make mains “more professional”. It simply solves a different workflow.
Plan circuits from the real load
When several high-power fixtures share a location circuit, total load matters.
Do not assume that because each individual fixture plugs into a normal outlet, any number of them can share the same branch circuit.
Consider:
- the rated circuit capacity;
- other equipment already on that circuit;
- local electrical regulations;
- continuous-load requirements where applicable;
- cable length and conductor size.
For larger systems or unfamiliar venues, involve a qualified electrician or experienced lighting technician.
AC current is not always just watts divided by nominal voltage
Real AC equipment can introduce power factor, conversion efficiency and waveform considerations.
For rough planning, the fixture’s published input-current specification is preferable to reverse-engineering the load from headline wattage alone.
For critical distribution, follow the manufacturer’s electrical data and local code rather than an internet calculator.
Voltage drop matters on long cable runs
Long cables and high current can reduce the voltage arriving at the fixture.
That can contribute to:
- unexpected shutdowns;
- reduced performance;
- erratic behaviour;
- additional heating in underspecified cabling.
Our guide to voltage drop and unstable location power explains this problem in more detail.
DC voltage drop can be especially important at low voltage and high current
Because a low-voltage system may carry substantial current, cable resistance becomes more significant.
This is another reason to avoid unnecessarily long, undersized DC leads between battery and fixture.
Keep the power architecture as simple as the production allows.
Where Maxima 3 fits
Maxima 3 is a fixed 5,600K all-in-one fixture specified at approximately 270W input.
That gives a useful example of why wattage should be read as a power-system requirement rather than as a creative description of the light.
Its actual photographic value depends on the modifier, optic, distance and subject — not merely the 270W figure.
Where Maxima 6 fits
Maxima 6 represents a substantially higher power class, with a maximum draw of approximately 600W.
Its current platform also supports DC operation from compatible third-party sources within the documented 35–75V input range.
That is a very different electrical problem from running a compact V-Mount fixture directly from a camera-style battery, even though both systems are “battery capable”.
Higher voltage can make high-output DC systems more practical
At 600W, delivering power at 14V would require very high current.
A higher-voltage DC architecture reduces that current requirement and can make cabling and connectors more manageable.
This is why battery-system compatibility should be evaluated in terms of volts, amps and watts together rather than asking only whether the battery is “large enough”.
Where Furiosa fits historically
Maxima’s earlier Furiosa platform represented the company’s previous high-output tunable-white, ballast-free philosophy.
It is a useful reminder that “all-in-one” describes system architecture, not low electrical demand. A fixture can remove an external ballast while still requiring a substantial and correctly planned power source.
For current compact battery-first Maxima workflows, Spectra and Rapida are the more relevant reference points.
Do modifiers change electrical consumption?
A modifier does not normally change the fixture’s electrical input simply by being attached.
But it can change how much output you need.
A large softbox or diffusion frame can absorb a meaningful amount of light, so you may run the fixture harder to reach the same exposure.
That increases practical battery consumption even though the modifier is not electrically connected.
Power planning therefore belongs to the complete lighting design.
Do not size a battery from lumens
Lumens are optical output. Watt-hours are stored electrical energy.
You cannot determine runtime from lumens alone.
You need the fixture’s actual electrical demand at the intended operating state.
Temperature affects the power system too
Battery and fixture behaviour can change outside their normal operating temperature range.
Cold can reduce available battery capacity. Excessive heat can trigger battery or fixture protection.
Follow the documented operating limits for both the light and the battery rather than assuming one temperature rule applies to every chemistry and design.
Generators and temporary power need their own planning
On remote locations, the issue is not simply whether the generator has enough headline watts.
Also consider:
- voltage stability;
- frequency stability;
- other loads sharing the generator;
- grounding and protection;
- cable distance;
- noise and placement;
- fuel/runtime planning.
Where temporary power becomes complex, use qualified crew.
Redundancy is part of professional power design
For an important production, ask what happens if:
- a battery fails;
- a charger fails;
- a cable is damaged;
- a circuit trips;
- the planned outlet is unavailable.
A spare battery or second AC cable may create more practical resilience than carrying another entire fixture.
A practical V-Mount planning workflow
- Read the fixture’s permitted voltage and current requirements.
- Check the battery’s continuous discharge capability.
- Estimate runtime from Wh and fixture draw.
- Add realistic margin for losses and battery cut-off.
- Test the exact battery at the intended output.
- Plan charging and swaps around the production schedule.
- Carry enough redundancy that one failed battery does not stop the shoot.
A practical mains-power planning workflow
- List every fixture’s maximum electrical load.
- Identify what else shares the circuit.
- Check circuit capacity and local regulations.
- Use appropriately rated distribution and extension cables.
- Minimise unnecessary cable length.
- Keep connectors dry and mechanically protected.
- Use qualified electrical support when the system becomes complex.
Common power-planning mistakes
- Comparing fixtures by watts as though watts were brightness.
- Assuming a V-Mount battery is compatible because it physically attaches.
- Calculating runtime from Wh without allowing for losses.
- Using average operating power instead of maximum input for circuit planning.
- Ignoring current draw at low DC voltage.
- Running long underspecified cables.
- Assuming battery operation always means reduced output.
- Planning a large temporary-power system without competent electrical support.
So how much power does a professional continuous LED light need?
Exactly as much as its electrical design requires — and that number only becomes useful when you know the voltage, current, connector, runtime and power source around it.
Professional power planning is not choosing the biggest battery or the highest-rated outlet. It is matching the electrical architecture to the way the fixture will actually be used.
If you are building a Maxima kit around mains, V-Mount or higher-voltage DC operation, talk with a Maxima specialist about the fixture model, expected output, battery platform and location-power environment.
