Negative Positive
Title: Maybe great for back-up power - but not as a jumpstarter.
Review: I purchased it primarily as a jumpstarter for my classic VW...and secondarily as a backup power sourse in case of hurricane etc. It may work well for the latter - but after getting it, charging it for 3 days, and trying to jump my car - it would barely turn it over and was dead after 3 tries. Back to a $75 Battery Charger/Jump Starter for me.
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