Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Junk Battery

The battery will not hold a charge after a few inflations. It has a very small compressor since it has to have more room for the worthless battery. It takes about 20 minutes to inflate a 16" tire from almost flat. My battery quit completely after 4-5 inflations. I took it apart and found a swelled battery. Lucky it didn't split apart and get acid all over everything. You can get a replacement battery for $20 - $50 plus shipping.