The Energizer XP 18000 Universal Power Pack is the best in class laptop battery and charger. Use it as a power adapter or charge up to three devices at the same time like your cell phone, iPod and laptop. The Energizer XP 18000 Universal Power Pack is less than a pound and compact. This rechargeable power pack fits in your bag easily, and provides up to 6 hours of additonal laptop power. Three power outputs allow you the flexibility to charge and power multiple devices simultaneously. The Energizer XP 18000 Universal Power Pack comes with 3 power cables, 6 cell phone tips, 3 media tips, 9 laptop tips, an AC adapter and a carrying bag.