Universal 100W Laptop Car Charger 15V 16V 18.5V 19V 19.5V 20V DC Power Adapter W/16 Tips for HP Dell ASUS Samsung Sony Acer Toshiba Gateway Lenovo ThinkPad Compaq and More Laptop Computers

My application is to charge a Solar Power Station while on the road. It will accept up to 30 volts and up to 120 watts, so this charger with 20v @ 90 watts sounded perfect.Sadly, the charger has no current limit on the output, so my Power Station sees 121 watts! This is 6.05 amps at 20v, while the charger is only rated for 4.5 amps. You can see by the picture that the charger is pulling 143 watts, so it’s 85% efficient. However, it gets very warm after 5 minutes so I can’t see this lasting very long while being overloaded.This is otherwise a very nice unit that I’m sure would work well for a laptop, but I’m returning.

I have to hand it to the ambitious company that designed engineered, and produced this thing. They we're really trying to make a Jack of All Trades, but unfortunately they ended up with a Master of None.Let's face it: There are a lot of different laptop charging voltages, amperages, and tips. It's really pretty ridiculous how little commonality there is. USB is the exception.Well, I tried this DC charger without a tip at all (USB port power only), on a Dell laptop, and on an Acer laptop. It didn't work with any of them at all. No power. Nothing.I will concede that my use is a little different. I was plugging into a portable power bank with a 12 volt recepticle rather than an actual car cigarette lighter jack. But that shouldn't have effected the function. My power bank is rated to over 200 watts, and is a pure sine wave. When I tested it with another simple 12 volt to USB converter, it worked fine. But with the DC laptop charger, all I got was an error message.Pity, because I could really use the more efficient DC to DC charging rather than having to use my power bank's DC to AC inverter.

I needed a 12v charger for my ASUS ZenBook. I kind of figured that all 19v ZenBook chargers are created somewhat equal, and even though my specific model number was not on their list, surely one of them would work. After all, it does claim to be a "Universal" charger.Wrong.If you own a ZenBook, you are aware that there are a gazillion model numbers. Mine is: UX533F. None of the adapters worked. The one that "should" have worked didn't fit into the power receptacle. Two other that did fit (and, had the essentially the same voltage) didn't work either. I guess the ZenBook has a feature where it can tell if the proper charger is plugged in, regardless if the voltage is correct and the plug fits or not.So, I can't speak for the effectiveness of this product, except to say "Universal" isn't really Universal. I guess that's the really nice thing about standards: There are so many to choose from.

I bought this to use on a 24" 19v television in my ice fish house. I connected to a car battery and it worked great for the first 2 times I used it. On the third use it would momentarily send power to the TV then the blue indicator light would dim out. No power coming out. TV works great with ac-dc adapter so it has to be this adapter that failed.It was handy and I kept all the different adapter ends in case I needed something else to power, but not if it dies...

I just wrote a poor review about this. I was a bit hasty in doing that. After 7 months it quit working and I was disappointed with it. Then I got to thinking about it and remembered there is a fuse in the cigarette lighter plug. I checked and the fuse looked good but when I tested it it was faulty. I changed the fuse and now it is working again.It has kept my computer charged for me and has done a good job.

Got this to power a laptop while off grid living in an RV. The connector that fits my HP laptop didn't last 6 months while being stationary and only moved from one room to another. The OEM 120v charger still fits the barrel connector and charges perfectly well. The charger portion has worked well, but with the flimsiness of the barrel connector I can't imagine this would fare better for travel.

I've been using this charger for a couple months in my car and it has worked great for an Asus E203MA laptop. It charges up only when the ignition key is turned on so you don't need to worry about draining the car battery. One issue is the adapter plug is a not as tight as expected and will come out easily if you aren't careful. The unit itself is smaller than I expected so it is pretty non-intrusive sitting in my car.

Works great! Doesn't struggle with the hefty power demand of my laptop. Has an extra convenient USB to charge your phone. It can handle 16 Volt input without a problem. Output is voltage is clean and causes no issues unlike cheap power supplies. The materials and build quality seems excellent