In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.

Used it for a few hours (down to about 1 bar on the battery), then left it on the battery for a week with nothing hooked up to it(No lights on top). Battery pack now refuses to charge. You want to take it off promptly, because the device will discharge the pack to the point of damage. That's an $80 mistake I hope this review helps you avoid.
Works, apparently kills the battery if left on too long.