Instruct: Classify the given review as either positive or negative.
Query: Seems to be inaccurate

I was looking forward to having a multi-purpose tester. I kind of liked the idea of being able to test lightbulbs too, because we have a few around that I don't know about and wanted to sort and either keep or recycle.In the end, I couldn't get an accurate result on the batteries I tested, and I couldn't even determine how to test lightbulbs. There were no real instructions for it, and every way I held the lightbulb to it got kind of a wonky result. Some of the batteries I tested were known duds, already used up, but the tester was showing them at full charge.Definitely not a very accurate tester, which is disappointing. I don't know if I just got a defective unit, or what... but the unit did match the picture on the product description, so it wasn't just the "wrong one". I had to return it.