Overview: Cell Type: Li-ion Voltage: 3.7 V Capacity: 780m Ah Replacement for SONY ERICSSON Original Battery BST-36 Compatible Cell Phone Models:SONY ERICSSON J300c/k 310/k 510/T258/W200C/Z310/Z320/Z550/Z558 & More Specification: Weight Approx:23g Size Approx:4.7 x 3.5 x 0.4