Instruct: Classify the given Amazon review as either positive or negative.
Query: PowerSource 1800 // Feedback

I bought this item. It was charding for 4 days. I am getting the same messages Ch9. It keeps flashing ON and OFF. According to the manual the MAX time for charge is ~15hrs. I tested the item with sump pump and it works ok! But this ON and OFF is annoying. After ~15hrs it should change to solid FUL. If I pay hundreds of $, I want to be happy. On the manual there is "Contact Information Telephone: 1 360 925 5059(direct)". I am keep calling to this # to get explanation of event but I am getting ring - no answer. If I want to ship item back, I have to deal with its weight and shipment charges and then wait for my $ back. Do not like situation at all. I would not say "Recommend" of "Waste of you time". It is up to you to decide.