BoschGLI18V-4000CN 18V Bluetooth LED Floodlight - 4,000 Lumens, Remote Control, Durable Metal Body, Adjustable Brightness & Long Runtime - Perfect for Job Sites & Outdoors (Bare Tool)

I had the older Bosch light (the GLI18V-1900), which is much heavier and bulkier than this light. I still use it at home, in the backyard when we're playing games in the yard (cornhole, Bocce ball, etc). I love that this light connects to your phone. You can turn it on and off and control the brightness from your phone. I connect this light to the ceiling grid with a zip tie when I'm terminating cables in a rack or cabinet, so it's nice to be able to turn it on and off without having to get up on a ladder.If you are like me and end up having this on all day, I strongly suggest you get a couple of the big Core 8 amp hour batteries to use in it. I can keep this on all day (on the high setting) with 2 to 3 battery changes if I'm using the 8ah batteries. I just take the drained one out, put the other one in, and pop the drained one in the charger... rinse and repeat. A long day might require 3 -4 battery changes. but considering how incredibly bright this thing is, that's really amazing. If you lower the brightness, you can probably get through an 8 hour day using only one Core 8ah battery. If you are going to have it on the brightest setting and use it all day, you'll need 2 8ah batteries, and your charger to keep it going constantly.While this tool does have Bluetooth built in, it does NOT have a geofence feature that will remind you if you leave it behind (nor does it let you know where it was last located, although it does tell you the last time it was connected). So, I attached an Apple Tag to it with a rugged tag case that sticks to the light using 3M's VHB adhesive (I have a bottle of adhesion promoter that makes the VHB stick like a champ to most surfaces). That way if I forget it (which is easy to do when you're packing up and just forget that I've ziptied it to the ceiling grid) the Apple Tag alerts me when I drive away (the Apple Tags have a nice geofence feature that does that). I wish Bosch would include a geofencing feature, or at least let you know the last place your phone was connected to it. Some other commercial-quality toolmakers are including that feature, and it would be easy to do with the Bluetooth being built in these devices or available separately in a little Bluetooth module that pops in the newer devices (like the newer drills and chargers).That aside... it's a great jobsite light that is really bright, well-constructed and pretty lightweight compared to most other portable lights of it's type. Bosch has upped their game in the last couple of years and that makes me really happy, because most all of my portable tools are Bosch. Most construction guys are monogamous to one manufacturer, because we don't want to haul around 2 or 3 types of chargers and dozens of different batteries. So, it's nice that they've recommitted themselves to keeping up with the Yellow, Red and Turquoise competitors (you know who they are).There is one more reason - maybe a little quirky, but still a good reason - is because most guys on jobsites are Yellow or Red tool devotees. Not a lot of construction guys in the States have all Bosch tools, unless it's vacuums or demo hammers, which most construction companies prefer (especially the demo and hammer drills, of which Bosch is the best). That means that those few bad apples who have sticky fingers and like to add tools to their collection that they didn't buy (meaning they steal tools from the jobsite) aren't as tempted by Bosch tools, because they don't have the charger or batteries for it. In the past, fear of being stomped into the concrete kept guys from stealing tools, but nowadays (in our kinder and gentler world) that fear isn't as prevalent. So, it's nice that Bosch tools aren't as attractive to them as the Yellow, Red and Turquoise tools are (because lots of guys buy their tools from Home Depot, that stocks the Red, Yellow and Turquoise tool brands, but they don't often carry Bosch, except for demo hammers). I live in Texas, and tools rarely get stolen off jobsites here, but when I travel to some other places (which will remain unnamed) they walk off frequently, but Bosch tools aren't as attractive to these thieves it seems like. Dunno if they're harder to pawn or they just don't have the charger and batteries for them, but Bosch tools are stolen far less, in my experience (except for the demo hammers, thieves love Bosch demo hammers). Anyway, I'm rambling. This is a great light! Get it!

Was in search for a portable outdoor light and have tried 3 different lights prior before settling on this light. Other 3 lights were below 2000lm output and just didn't have enough output or the beam being too narrow. This light has a very wide beam and natural white color output that doesn't distort colors. Heatsinks were barely warm to touch after two hours on high and the battery life is exactly as stated in the spec. This unit looks to be made by Scangrip and even has their logo on the LED housing. Very well built and looks sturdy enough to take the usual construction jobsite abuse. Only cheap feeling part is the light switch, which is hard to locate in dark due to it being smooth and level with the surrounding surface. Light output is very good considering its size and highly recommend if you're already in the Bosch battery ecosystem.

This thing is so bright! And one thing I love about it is that there aren’t any hotspots. It’s just even lighting, everywhere. It has a nice, wide spill so you can illuminate a large area.It works with every size of Bosch’s 18V batteries, but the 8AH ones are heavy enough that depending on how you’re trying to aim it, it’ll fight you. 4AH batteries aren’t heavy enough to cause a problem.I have only barely used the Bluetooth feature, and it’s nice to be able to turn on and off or adjust brightness from a distance but Bosch’s app is absolutely terrible.

This light (you have to buy your own battery) is small, versatile and bright for any work jobs indoors or outside. You can mount the light on a tripod(if you have one) and works well!

Sturdy and very bright

Good product

I have no idea why I kept these 500W halogen work lights around for the last 20 years. The 4000 Lumens are not just fully replacing these 500W halogens, but you can also turn them down. I use 8 Ah batteries and these, and on low setting, which is plenty, on charge ran for hours (16 reportedly, I think I hit 12 and there was charge left), through the entire project. I use it for home improvement projects, where I have to take the circuit breakers out, or after dark working outside. 4000 Lumens appear to the the sweet spot - you can switch between 1000, 2000, and 4000 - which compares to about roughly 10 lumens per incandescent Watt. So, 4000 lumens gives you roughly the output of 400W of incandescent, a tiny bit shy of the 500W old-school halogens.

I have been disappointed by the "flashlight" style 18v lights from all the power tool manufacturers. Bosch, Dewalt, etc, they just don't provide enough light for most tasks. This light is the opposite, it provides as much light as you could ever need. It is capable of illuminating large rooms or whole outdoor areas even on the "low" setting. On the "high" setting the light is blinding and you need to take care to position it so it is not directed anywhere near your eyes.The only issue to be aware of is that the power it has uses batteries up quickly. On the high setting you can burn through even a largest Bosch 18v batteries charge fairly quickly.