Exell Alkaline Battery A21PX Replaces 523 EN133A PC133A PX21 1306APThe A133 or 523 battery is an unusual cell often used in classic cameras. It is used to maintain computer time date and configuration in certain models of Apple Macintosh computers (Parameter Random Access Memory Parameter RAM or just PRAM). This PX21 battery has an NSN number of 6135-99-114-1239 and a US Military part number of BA-1098/U. Specifications: Type: Alkaline Voltage: 4.5V Amperage: 600mAh Diameter: 16.8 mm Height: 49.9 mm Terminals: Flat Contacts Exell Alkaline Battery A21PX Fits and Replaces: 1306AP 3LR50 523 6135-99-114-1239 A21 A21PX A133 APX21 BA-1098/U EN133A EPX21 PC133A PX21 RPX21 V21PX Syncron AU7a condenser microphone Digitech DSP-256XL Mallory TR133 Polaroid 268 flash Polaroid Automatic 100 Praktica 35mm SLR EE2 Digitech GSP21 guitar signal processor Duracell PX21 Novacell NV3LR50 Novacell NV 3LR50 Rohrback Cosasco Systems Model CK-3 Portable CORROSOMETER Rohrback CK3 corrosometer Mac Plus computer 523BP Electrovoice PL76 microphone PX21A 1985 Apple Macintosh 512K Fat Mac ElectroVoice PL76 microphone NEDA 1306 Eveready 333 DigiTech DSP digital sound processor 256XL EV PL76 Condenser Cardioid Microphone 1979 Praktica EE2 film camera EN133A NEDA1306A NEDA 1306A DigiTech GSP 21 pro EVERYREADY 523 Energizer 523 CNB523 EN 133A NO. 523 4 5V UCAR NO.523 UCAR 523 UCAR TR133 4.2V EN133A 4.5 V 4.2 Volt NEDA Type 1304 Ray-O-Vac T133M Mallory T133 Eveready E133. Original was a Electrovoice BK-1 condenser microphone TR133A Novacell NV 3LR50 Eveready 333 NEDA 1306 Energizer 523 PX21 EN133A PC133A A133 3LR50 1306AP Tadiran 15-51-03-210-000 3.4 volt or Saft L56VA or Tadiran TL2100/S Lith-10 or Maxell ER6C Dantona VPX21 ANSI 1306M ANSI 1314M Apple MAC 512 Apple MAC 512KE Apple MAC PLUS Apple MACINTOSH 512 Apple MACINTOSH 512 KE Battery-Biz B270 Clockmate Batteries 523 Compuadd 386/16 Compuadd 386/20 Compuadd 386160 Compuadd 38620 D C Battery 523 Exell Battery Rechargeable Alkaline Vintage Camera Batteries | A21PX
