Yeti Lithium batteries are rated for 500 cycles to 80% capacity. This means after 500 full life cycles from 100%-0% you will still have 80% of the original rated capacity. A Yeti 1500X will last 1,516 Watt Hours. A Watt Hour is a unit of measurement for power over a period of time (an hour), or in the case of Goal Zero products, a way of measuring capacity. One Watt hour is equal to one Watt of average power flow over an hour. One Watt over four hours would be four Watt Hours of power. As an example, a 100 Watt light bulb on a 400 Watt Hour battery (like the Yeti 400) would last, on paper, 4 hours.

Rather than amp hours, Yeti X models use a watt hour measurement. So a Yeti 1500X will last 1,516 Watt Hours. And what's a watt hour? It's a unit of measurement for power over a period of time (an hour), or in the case of Goal Zero products, a way of measuring capacity. One Watt hour equals one Watt of average power flow over an hour. One Watt over four hours would be four Watt Hours of power.

There are three ways to charge a Yeti 1500X:

FROM THE SUN
Recharge from the sun by connecting a compatible solar panel. Charge times are dependent on the size of the solar panel. The Boulder 200 Briefcase will provide 100W of solar and fully recharge the Yeti 1500X in 18-36 hours of sun.

FROM THE WALL
Plug it into the wall. Fully recharges in 14 hours using the included 120W Power Supply AC Wall Charger. Not quick enough? Drop your recharge time to 3 hours using the available 600W Power Supply or 7 hours with the 230W Power Supply.

FROM THE CAR
The Goal Zero Yeti 1500X can be charged by plugging into your 12V adapter using the Goal Zero Yeti Lithium 12V Car Charging Cable. NOTE: Do not attempt to charge your Yeti Lithium from a 12V source using a regular charging cable. Doing so may cause damage to the unit.

The most popular large power station Goal Zero sells, the Yeti 1500X is powerful enough to backup home circuits, but portable enough to take camping, tailgating, to the job site or to integrate into a van build.