The Verdict

Tresda 100W COB Rechargeable Work Light: Real Brightness, Real Battery, Real Tradeoffs

If you’ve ever squinted at a dark engine bay or tried to run a cord across a wet driveway, you know the drill: most rechargeable work lights are either too dim to matter or too bulky to use. The Tresda 100W COB sits in a sweet spot — bright enough to replace a corded halogen, but portable enough to toss in a tool bag. After 220 Amazon ratings averaging 4.4 stars, it’s clearly doing something right. Here’s the honest breakdown.

What You Actually Get

The box includes the light itself, a Type-C charging cable, a metal hook for hanging, and a small tripod stand that extends to about 5 feet. No wall charger — you’ll use your phone charger or a USB port. The light measures roughly 8 x 5 x 2 inches and weighs about 2.4 pounds. The COB (chip-on-board) LED panel sits behind a durable aluminum housing with a built-in kickstand that folds flat.

Three brightness modes — 100%, 50%, and a low eco mode — plus a separate COB area light and a side-emitting strip for wider coverage. The controls are two simple buttons on the back: one for power/mode, one for the side light. No confusing multi-click sequences to memorize.

Performance: The Numbers Match the Hype

At full 100W output, this thing genuinely pushes 7000 lumens. To put that in perspective: a typical 60W garage fluorescent tube puts out around 3000 lumens. The Tresda covers roughly a 20x20 foot area with usable light at max setting. Color temperature is a neutral 6500K daylight — harsh but excellent for seeing fine detail, less ideal for photography or warm ambient work.

The battery is a 100Wh lithium pack. Real-world runtime at full blast runs about 2 hours. Drop to 50% and you get roughly 4-5 hours — still plenty bright for most tasks. The eco mode stretches to 8+ hours but output drops to maybe 1500 lumens, which is fine for reading or close work.

Charging via Type-C takes about 3.5 hours from empty. The light has a battery indicator with four LEDs, so you’re not guessing when it’s about to die.

What Buyers Consistently Praise

The pattern across reviews is remarkably consistent. One buyer wrote: “Used it for a weekend engine swap in a dark garage — it lit the whole bay like daylight. My corded halogen went in the trash.” Another noted: “Took it camping, dropped it on rocks, got rained on — still works perfectly.”

The IP65 waterproof rating is real, not marketing fluff. The housing has proper rubber gaskets, and the USB port is covered by a flap. I’d trust this in light rain or on a damp concrete floor without worry.

The tripod is a genuinely useful addition. It extends to a working height that puts the light at chest level when seated — perfect for under-dash work or wiring projects.

Where It Falls Short

Battery life at max is the biggest compromise. Two hours at 7000 lumens is fine for a focused task, but if you’re doing a full day of work, you’ll need to plan charging breaks or carry a power bank. This isn’t a flaw — it’s physics — but it’s worth knowing before you buy.

The 2.4-pound weight makes ceiling work uncomfortable. If you’re hanging it overhead for extended periods, the metal hook helps, but your neck will feel it.

The stand is a bit wobbly at full extension. It’s fine on flat surfaces, but on gravel or uneven ground, it wants to tip. The hook is your better option outdoors.

No included wall charger is mildly annoying, though most people have a Type-C brick lying around.

Who Should Buy This

• DIY mechanics doing weekend repairs — this replaces a trouble light and a drop light in one unit
• Electricians and plumbers working in crawl spaces or attics where cords are a hazard
• Campers and overlanders who need reliable, water-resistant light for setup or repairs at night
• Anyone doing interior painting or drywall who needs even, shadow-free illumination

Skip it if you need all-day runtime at full brightness, or if you prioritize ultra-lightweight portability over output.

FAQ

Q: Can you use it while it’s charging? A: Yes, but the light draws more power than the charger supplies at max brightness. You’ll drain the battery slowly while plugged in at 100%, but 50% mode charges while running.

Q: Is the 7000 lumen rating accurate? A: Independent tests and user feedback confirm it’s close to real. The COB panel is efficient and the driver is decent. It’s not a fake “100W equivalent” marketing number.

Q: Does it come with a case? A: No. It ships in a cardboard box. The light itself is rugged, but you’ll want a soft pouch or tool bag for transport.

The Verdict

Buy it if you need a genuinely bright, cordless, weather-resistant work light that won’t break the bank. The Tresda 100W delivers real 7000-lumen output with a usable battery, solid build quality, and IP65 durability that most competitors at this price don’t offer.

Skip it if you need all-day runtime at max output, or if you’re doing overhead work where 2.4 pounds becomes a burden. Also skip if you want a hard carrying case included.

Rating: 4.2/5 — A strong, honest performer with a couple of compromises you should know about. Well worth the money for most buyers.

Note: This product is frequently discounted on Amazon. Check current pricing before purchase.

Where to Buy

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Last updated: 2026-08-06. Ratings and prices current as of review date. Verify on Amazon before purchasing.