PHYSIO CONTROL LIFEPAK 20 GENERIC AED BATTERY (11141-000068). B11293 Generic Replacement Biomedical Battery for Physio-Control LifePak 20. This NiMH battery has a nominal voltage of 12.0V and a rated capacity of 3.0Ah. Replaces OEM Part 11141-000068. Alternate number: 3200497-001. Price per each.