YOU CAN'T GO WRONG WITH 400+ WATTS OF CHARGING POWER - THE GOAL ZERO YETI 400 LITHIUM PORTABLE POWER STATION.With plenty of juice for all of your devices, this rugged Power Station is the perfect companion for travel and camping. Perfect for basecamps and weekend camping trips, the Goal Zero Yeti 400 Lithium portable power station keeps your electronic devices alive and kicking with 400+ watt hours of power. FEATURESQuiet, portable power station recharges from the sun with a Goal Zero solar panel (sold separately) or from a wall outletMore powerful than its predecessors, the Yeti 400 features increased surge allowances, advanced battery protection, user-replaceable lithium battery pack and longer shelf life428-Wh battery capacity with 39.6Ah and 10.8V is ideal for powering lights, smartphones, tablets, laptops, a mini fridge, TV and portable medical devices4 USB power outputs and 2 AC power outputs let you power up multiple devices at the same timeFully charged, the Yeti 400 offers the following approximate power: headlamp (100 charges); smartphone (30+ charges); laptop (3-5 charges; tablet (10+ charges)TECH SPECSDimensions: 11.25 x 7.5 x 7 inchesWeight: 16 lbs. 4.8 oz.Charge Time (hrs): Wall: 7; solar: 14 - 16 hours