Duracell DPP-600HD Powerpack 600 Jump Starter & Emergency Power Source with Radio

This powerpack has saved me several times.
This works great for jump starting cars and boats!

Runs my telescope, camera, & computer all night with radio with an occasional burst from a hair dryer for the dew removal. The 600HD will go for a few nights b4 I have to recharge. Recharge is far shorter than 35hours as directions say. Light is not very useful due to it's angle but is VERY bright. I like to monitor the power especially when doing long exposure fotos and it seems to go down pretty quickly but after it rests for a while, it climbs back closer to 100%!!!

Very happy with the product!

This product exactly mathches the requirement of mine, and I am happy with the performance of it.

We have 3 of these. We lose power a lot and this will run small things like a fans, radios, probably a tv, but I haven't tried it. I had hoped it would run an oxygen machine but it only lasted for 15 minutes. The compressor on the oxygen machine just pulls too much juice. We have been pleased with this product.

An important item that the marketing materials leave out is that this unit must not be used or stored above 104 degrees Fahrenheit. There is a warning in the owners' manual about this. I contacted the manufacturer by email and asked if it was OK to store the unit in the trunk of a vehicle, which could get up to 150 degrees or so in the summer sun, as long as you let it cool down below 104 degrees before using it. The representative checked with their engineering department and responded to me that it is not safe to do so. Seems you can't allow the unit to get below 32 degrees Fahrenheit either, according to the manual. So much for leaving the unit in your car as an emergency backup.

Another thing that is not mentioned is that the AC outlets provide power that is a "simulated sine wave;" simply stated, this means it is not as "clean" as power from a regular AC outlet. Therefore, I would not recommend that expensive computers and other electronic equipment be plugged into the AC outlet. Use the 12V DC "cigarette lighter" outlet for this type of equipment, using the appropriate adapter for your cell phone or computer, and it is perfectly fine.

Otherwise, generally speaking, a good unit to have around, in your climate controlled garage, in case the power fails.