Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Great Battery

This is a helpful item. I bought two on sale. The batteries I have give a good 4-5 hours. It works for me since most of the smaller portable DVD player batteries only last a couple hours. Overall, worth having just in case of power outage or long travel. Wish they'd go on sale again soon. My only two gripes are that they could have colored the charge outlet, so it can be seen easier and added a charging light/meter so you know when the battery is fully charged. Make sure your charge a good 24 hours prior to using. Enjoy.