Cameron Sino650mAh Battery for Palm M150, M155, Zire 21, Zire 22 Cameron Sino Brand New and High Quality Replacement Battery for M150 M155 Zire 21 Type: Li-ion, Capacity: 950mAh/3.52Wh Dimension: 50.92 x 30.61 x 4.74mm , Weight: 50.0g All Products are Certificated with ISO9001, RoHS & CE 14 Days Money Back Guarantee and 12 Months Warranty