BATTERY 6600mAh for Dell Studio 15 1535 1536 1537 1555 1557 replaced 312-0701 312-0702 KM904 KM905 KM958 KM965 MT264 MT276 WU946 WU960 WU965 PW773 3,120,701 3,120,702 KM-904 KM-905 KM-958 KM-965 MT-264 (Electronics)
The running time is considerably longer than in my previous original Dell battery, which was, however, been 5 years in operation. I am satisfied, especially when you consider how much Dell asks for a new battery.