Use these at work the 10w is good the 20w is brighter but bigger depends what your doing but both are good crisp white bright light. Re charging takes a while but they last a long time and have a led warning as they get low. You can buy a magnetic base. Can be charged by socket or tab lighter in a vehicle. A few different makes available but the flood it are more expensive but that's the ones I have a good light. The screw fix ones are good and cheaper and lad I work with is more than happy with his screwfix one. All led so no bulbs blowing even when knocked about and cool to the touch 2 advantages over the old halogen type. But means you can not warm your hands off it
http://www.screwfix.com/p/ae0183-rechargeable-led-work-light-10w-12-240v/1815D?kpid=1815D&cm_mmc=Google-_-Product%20Listing%20Ads-_-Sales%20Tracking-_-sales%20tracking%20url&cm_mmc=Google-_-Shopping%20-%20Electrical%20and%20Lighting-_-Shopping%20-%20Electrical%20and%20Lighting&gclid=CLOBs-6kt8wCFQhuGwodHbMMSw
http://www.screwfix.com/p/ae0183-rechargeable-led-work-light-10w-12-240v/1815D?kpid=1815D&cm_mmc=Google-_-Product%20Listing%20Ads-_-Sales%20Tracking-_-sales%20tracking%20url&cm_mmc=Google-_-Shopping%20-%20Electrical%20and%20Lighting-_-Shopping%20-%20Electrical%20and%20Lighting&gclid=CLOBs-6kt8wCFQhuGwodHbMMSw