The Tripp Lite PVINT375 PowerVerter PVINT375 Power Inverter helps you to keep your devices functioning even when you re away from a household current. It can sustain a load of 375W and peak power of 600W so you can use it to run your battery charger laptop TV radio or other device. This Tripp Lite power inverter connects to any standard cigarette lighter adapter so you can run it from your car while you re driving. The unit has a low-battery alarm and an auto shut-off to keep from draining your battery to a critical point. The built-in cooling fan keeps the unit running smoothly by keeping air flowing and preventing overheating. Its fuse is user-replaceable so you can keep using it even after an overvoltage. This unit has an all-metal case to make it rugged and strong.