Last year my wife gave me these Caterpillar-branded, LED work lights and I want to recommend them because I think they’re great. These 500-lumen work lights run on four AA batteries and have an 8-hour life on low power. The best thing about them though is that they’re magnetic. When I check the oil on the truck at night I take one out of the back and pop it under the hood. It’s such a joy to have the engine bay so well lit. They’re also great for sticking to the side of the roof rack as area lights for when we arrive at a remote camp at night. They’ve made a good addition to the truck.
They’re available for about $34 on Amazon. There are other versions (not CAT-branded) that are plug-in rechargeable. Reviews on those are mostly good.