3.6V 3600mAh Replacement Rechargeable Battery Pack for sony PSP PSP1000/1001 1.Special for PSP:This battery pack is specially designed for sony PSP1000/1001. 2.Big capacity:The pack capacity can arrive to 3600mAh, which can assure you long time game enjoyment with friends or family. 3.Long standby:Never run out of battery power when you are about to score the winning point. 4.Save money and protect the environment by using the rechargeable battery. Easy to install. Best replacement for your old or broken battery. According to different conditions, Battery capacity can be divided into actual capacity, theoretical capacity, also called rated capacity. Battery capacity refers to the battery storage capacity. The unit is /"mAh/", 1Ah = 1000mAh, so there are some differences between rated capa.