THE GOAL ZERO YETI 400 POWERS YOUR DEVICE IN 3 WAYS:
USB - The USB port best charges all your medium size USB powered devices.
12V - The 12V best charges all your medium 12V powered devices.
AC Inverter - Plug in your device just as you would the wall.
HOW LONG WILL IT TAKE TO CHARGE YOUR DEVICE FROM GOAL ZERO POWER PACKS?
It takes the same amount of time to charge your device from a Goal Zero power pack as it does from the wall.
When recharging gear with your Yeti 400, take note of the LCD Battery Display. If you plug in devices that have a high power requirement, the charge level of your Yeti 400 can drop quickly and you may not get exactly 400Wh of power. On the flipside, if you're recharging devices that draw power more slowly (a tablet), you will get closer to 400Wh from your Yeti 400. If you're experiencing shorter runtimes, you may want to check the device's power requirements.
COLD WEATHER USAGE
Cold temperatures (below freezing) can impact Yeti 400's battery capacity. If you'll be living off-grid in sub-zero conditions, we recommend keeping your Yeti 400 in an insulated cooler, and connected to a power source (solar panels). The natural heat generated by the Yeti 400 contained in an insulated cooler will keep battery capacity at its highest.
STORAGE AND DOWNTIME MAINTENANCE
Having your Yeti 400 connected to a power source, like a solar panel or wall outlet, between adventures or while in storage keeps its battery healthy and topped off. This prolongs battery life and will ensure your Yeti 400 is charged and ready to go all day, every day.
If you can't keep your Yeti 400 plugged into a power source during storage, fully charge your Yeti 400 every 3 months and store it in a cool, dry place. Failure to maintain your Yeti 400 by following these steps can result in battery damage which will void the product warranty.
CHAINING YOUR YETI
You can chain your Yeti 400 to other Yeti 400's to extend runtimes.
When additional batteries are chained to the Yeti 400, you will experience increased charge times - this is a result of having to charge up the chained batteries in addition to the Yeti 400.
**The Yeti 400 is NOT chainable with the Yeti 1250 - the internal batteries are not the same size. You can chain the Yeti 400 to the discontinued Extreme 350 Power Pack.