Instruct: Classify Amazon reviews into positive or negative sentiment
Query: TOO SLOW!!!!!

1. This DOES NOT CHARGE SLIM BATTERIES, ONLY PHAT BATTERIES.2. If you put a slim battery in, you will never be able to use it again, it will be damaged by the product.3. It takes very very very long to charge the phat battery, better buy the original PSP battery charger.4. It is not all that portable, it is much thicker than the PSP.5. It is very cheap material, can break easily.DO NOT BUY THIS PRODUCT!!!BUY THE ORIGINAL SONY PSP BATTERY CHARGER.PSP Battery ChargerPSP 2000 Battery Charger