At just under 2 pounds, this 500 watt inverter works well for low/med draw items like charging laptops, phones, tablets etc. while it will run a few more power hungry devices, it's best to go up a version or two so you don't always use at max output.  Maximum AC output listed is 4.17 ampsNice modern design case vs many power inverters that have more industrial look about them.  Comes with both power socket plug and battery terminal clips with wire set for each.You must determine the draw of what you will be plugging into any power inverter, this is just right for your electronic charging needs (note some exclusions/cautions in owners manual) and even has two USB outlets (max available shared 2.1 amps but note not full 2.1A from both at same time) PowerBright customer service says you can get full 2.1 amps when only using one USB outlet at a time however...so for the most part you don't need to use your AC adapters if you don't want.Update on the USB outlets;Seems they are 2.1 amps but only charge at the slower DC rate like hooked to a computer and not the fast AC rate like a wall adapter.  Of course using your AC wall charger in the EN500 outlet will get you fast charge as normal.I need to experiment with different USB cables to see if I can get the EN500 USB outlet to fast charge rate...  a slight chance since there are two versions of USB cable out there, one for power only and one for power and data communitcations.  Chance that power only cable will work better with the EN500 but not tested yet.  Have tested this with OTHER power sources/devices and it changes between AC/DC.Keep in mind if you are going to power a higher draw device, you really need to use the supplied wires with clips for direct battery attachment as the interior power outlet is not rated for heavy loads for longer periods or higher peak startups .Calculate what your devices use before you attempt to use them with the inverter.  Most devices will state amperage draw  on their labels.If what you need to use on regular basis draws more toward the max output, I recommend you go to at least the next size up or whatever output works at less than maximum ratingBuilt in cooling fan turns on at 158 F internal case temperatureEN500 has auto shut down under these conditions;Low battery voltage (10.5v)OverloadInput voltage too highOverheatedOutput short circuitThere is also a built in fuse to protect the inverterEN500 is not waterproof and needs to stay dryBe sure to read your owners manual for all cautions and warnings before use.  User manual also available to read in .PDF form at the Energizerpower web siteSold under the Energizer brand but manufactured and warranted by the PowerBright company, See the PowerBright web site for warranty claims or phone number in owners manual.Used within it's limits it will do a good job for you, used outside of it's limits you are asking for problems.