BP-173 : 9.6 volt 850mAh rechargeable Ni-MH battery pack for ICOM radios.  Fits the IC-T7A, IC-W32A, IC-Z1A, IC-T7H, IC-T22A, IC-T42A, etc (all worldwide versions).  Replaces original BP-173. It provides about 15% more running time than the original pack, it is substantially lighter in weight, and it is physically the same size as the stock battery!  This battery can be recharged thru the radio (with your original wall charger plugged into the radio), OR in a desktop charger (such as the EMS-173-180).