Battery for HP 620, Probook 4320 4320s 4320t 4321 4321s, fits PH06 PH09 593572-001 593573-001 (10pc)

4400mAhh 6-Cell Laptop Battery for HP 620, Probook 4525S 4420s 4320 4320s 4320t 4321 4321s 4325s 4520 4520s 4425s 4326s 4320T 4421S, Compaq 320 321 325 326 420 421, fits PH06 PH09 593572-001 593573-001. Specifications: Attention: For the new battery, we suggest all of our customers fully charge it by AC power adapter. Maybe it take a long period, the capacity was strain out by inner PCB circuit. In order to protect your battery life, you can fully charge it to 100% and drain to 2% ,it's a cycle and the capacity will recover. it's better to make normal use after 2 cycles and charge the battery regularly at least once a month. Battery Type: Li-ion; Voltage: 10.8V; Capacity: 4400mAh; Cells: 6-Cell; Color: Black 100% Brand New Cells. Rechargeable Up to 500 cycls over life of battery; High energy efficiency and extended battery life. Compatible with the following models:HP 420, HP 425, HP 620, HP 625, ProBook 4320, ProBook 4320s, ProBook 4321, ProBook 4321s, ProBook 4320t, ProBook 4325s,