Tripp Lite PowerVerter models provide AC power from a 12V DC source via your cigarette lighter plug. Packing reliable technology into a durable, lightweight housing, they provide solutions for all mobile power applications. Ultra-compact metal case Convenient plug for accessory outlet Quasi-sinusoidal phase-corrected waveform Up to 90% efficiency Low battery alarm / automatic shutdown Easily-replaceable automotive fuse Durable aluminum housing Illuminated on/off switch