Premium 58Wh Battery: Our GHU wu946 battery is a high-quality 58Wh battery that provides optimal performance for your dell studio 1535. It is the perfect battery for dell studio 1558, dell studio 1537 battery, and other similar models. It has passed UL testing, ensuring safety and reliability. Compatible For Dell Studio 1535 1536 1537 1555 1557, 1558, PP33L, PP39L battery WU946 KM958 MT264 Mt276, 5200 mAh and 58 Wh. Lasts More Than 3 Hours: This dell pp31l battery provides dependable power, lasting more than 3 hours on a single charge. This makes it an ideal replacement for your existing dell studio 1535 battery, dell studio 1558 battery, mt264 battery, or any 1535 battery or 1558 battery. 6 Cells 58Wh, ghu wu946 battery is fully compatible with dell studio 1555 battery, wu946 dell battery, dell mt264 battery. This GHU battery is also good for dell studio 1555 battery replacement.