The Festool 578128 SYSLITE KAL C Cordless 1200-Lumen Task LED Light is a compact cordless work light built for close-range jobsite lighting in tight spaces. This is a cordless task light designed for illuminating cabinets, punch-list work, electrical service areas, and other hard-to-reach spots. Model Number: 578128. If you already run Festool 18 volt batteries, this light gives you a simple way to add clean, even light right where your hands are working.

Output is the big story here. The KAL C uses 24 LEDs and offers three brightness levels at 300, 600, and 1200 lumens. That matters because not every job needs full blast. Lower output is useful when you are working up close and want to avoid harsh reflection, while the full 1200-lumen setting is strong enough to light the work area within the stated three to six foot range. Festool also rates the light at 5000 K with a color rendering index above 80, so surfaces and wire colors look more natural than they do under yellow-tinted shop lights.

Where this light separates itself from a generic battery lantern is positioning. The head swivels anywhere between 0 and 180 degrees, so you can aim the beam into a cabinet, under a sink, at a panel, or across a bench without having to prop the light up with scrap material. Festool also built in more than one mounting option. You can hang it from a hook, or use the 1/4 inch stand thread to mount it on a tripod when you want a small cordless area light instead of a handheld or shelf-set light.

The size is a real advantage. At 5 inches long, 3-1/4 inches wide, and 2-1/16 inches high, this is the kind of light that earns a permanent place in the truck because it does not take up much room. Festool specifically notes that it fits into the Systainer battery compartment or nearly any toolbox. At 0.80 lb without a battery, it is light enough to carry into finish work, service calls, and walkthroughs without becoming another bulky piece of gear.

For jobsite durability, the housing is built to be robust, shock-proof, dust-proof, and splash-proof, with an IP54 protection class listed without the battery pack installed. That is important for the kind of environments task lights actually see: floors with dust, damp basements, unfinished rooms, and service work where the light gets moved around constantly. It is a practical work light, not a delicate inspection lamp.

Battery compatibility is straightforward. The KAL C runs on Festool 18 volt battery packs, except the Ergo pack. Runtime scales with battery size, and Festool lists up to 360 minutes at maximum luminous flux with a 4.0 Ah battery and up to 450 minutes with a 5.0 Ah battery. Festool also states runtime of up to 90 minutes per Ah, so this light can stay useful through long service work or extended install tasks if you already have spare batteries in the system.

This light makes the most sense for electricians, cabinet installers, remodelers, punch-list crews, finish carpenters, and maintenance techs who regularly work inside enclosed spaces or in rooms where permanent lighting is not finished yet. It is also a smart add-on for any Festool user who wants a better alternative to holding a flashlight in one hand while trying to work with the other. If you do a lot of open-area lighting, a larger site light may be the better fit. If you need targeted, movable light in tight quarters, this one is right in its lane.

Festool 578128 SYSLITE KAL C Cordless 1200-Lumen Task LED Light Is the One You Keep Close

This is the kind of light that solves annoying real-world problems fast: bad lighting, tight access, and no free hand to hold a flashlight.

• Who it's for: Festool 18 volt users doing cabinet work, electrical work, remodeling, service calls, and finish work in close quarters.
• Why it stands out: It is compact, genuinely bright for its size, and the 0 to 180 degree head plus hook and tripod options make it much more useful than a basic cordless light.
• Worth knowing: This is a bare tool, so bring your own battery and charger. It is built for targeted task lighting, not for replacing a full-size room or site light.

• What batteries does this light use? It runs on Festool 18 volt battery packs, except the Ergo pack.
• How bright is the Festool KAL C task light? Maximum output is 1,200 lumens, with three selectable levels at 300, 600, and 1,200 lumens.
• Can it be mounted on a tripod? Yes. The light has a 1/4 inch stand thread for tripod mounting.
• How long does it run at full brightness? Festool lists 360 minutes at maximum output with a 4.0 Ah battery and 450 minutes with a 5.0 Ah battery.