Review on 🔋 Sony BP-HP550-11 Ni-MH 700mAh Replacement Battery: Enhanced Performance and Long-lasting Power by Shaun Schatz

The registered battery had the exact part number/size/etc but when inserted into my wireless headset and left on the charging cradle overnight it would not charge. The first thing I noticed was that the red light on the charging station wasn't lighting up as usual. Inserting the old battery into the headset restored operation, albeit with the short charging times I experienced, and this was the reason for my order. When I requested a refund, I didn't see an option to send another battery. I sent the defective one back. I've read other reviews and tried placing folded cardboard paper against the switch and putting batteries in the headphones and they work!