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Store power from your solar-powered base camp, or use the Extreme 350 Power Pack as a battery backup when you're far from the grid. This Power Pack serves as an add-on to your Extreme 350i Power Pack and Universal Inverter to boost the power you can have on hand to keep your electronics charged and light up the night. A tough casing, rubberized handle, and highly weather-resistant construction mean you can put this pack through the paces from Everest to your base camp in the desert.

  • Charges in 6-7 hours from AC wall charger, 12 hours from 12V car adapter, or 12-16 hours from Boulder 30 Solar Panel (sold separately)
  • Powers small household appliances, recharges laptops, light sources, and small electronics (inverter required, sold separately)
  • 20A fuse protection and a life cycle of 500-1,000 charges depending on usage
  • Voltage of 12 Vdc and maximum capacity of 350 watt/hours
  • Thoughtful engineering makes it easy to daisy-chain up to three Extreme 350 power cells for a total of 1400 watt/hours of power (additional 350 battery packs and inverter sold separately)
  • LED battery monitor that displays in 20% increments ensures you don't get caught by surprise with a dead battery
  • Rubberized top handle on battery makes unit easy to carry
  • Included accessories: cable to charge from AC wall outlet, cable to charge 12V devices from Extreme 350 Power Pack
  • Operates in temperatures from 32⁰-104⁰ F
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Not for everyone and you need to know ..

    If you look at the specifications of the battery you may think that you can get 350 watt hours out of it. Actually you can (in theory) get 396 watt hours out of it. But that would be to drain the battery completely-- something which would reduce the battery life dramatically. You never want to drain a deep cycle battery below 50%. At this reduced rate it really brings down the usable watt hours to approximately 200--go below that and you are reducing the battery life. Other than that the physical design is excellent. It will do the job to charge up or keep charged your personal electronics and power LED based lighting. Again just remember that 200 watt hours is just enough to burn a 100 watt bulb for two hours.

    Sun Valley Trekking uses the Extreme 350

    can you purchase and attach more than one...

    can you purchase and attach more than one solar panel to this to charge it faster?

    regarding the need for an invertor for 110...does that mean this does not have a built in invertor? (sorry I'm such a dummy about this...just learning...and want to find a decent, lightweight solar generator for power outages. it appears the 1250 would do the trick but it also weighs in excess of 100 lbs.....

    Best Answer

    Hey Deb,



    You sure can, the Goal Zero Boulder Solar panels can be chained together to charge your unit faster. I used the 1250 down in Moab, Utah for a backcountry.com biking event and we chained together 4 of the Boulder panels to charge the Yeti. Pretty sweet setup, though you are right, it took 2 people to move the 1250 around, that thing is INSANELY heavy.

    I have a small Aliner camper with a 5000...

    I have a small Aliner camper with a 5000 air conditioner. I would like to run it on solar power. Can anyone tell me what I would need to run this unit?

    What solar panel would you need to charge...

    What solar panel would you need to charge this?

    Is the battery replaceable. Is it sealed....

    Is the battery replaceable. Is it sealed. How much it weight and size measurements. Thanks