Part #: 6430028-1 Mid-Continent Instruments and Avionics TS28 EMERGENCY BATTERY POWER SUPPLY/Input Voltage: 26.532 VDC Output Power:24 VDC nominal 3 Amps max.
Part #: 6430006-1 Mid-Continent Instruments and Avionics TS6 EMERGENCY BATTERY POWER SUPPLY/24 VDC, 0.25AMP OUTPUT, 24-32 VDC input. TSO-C173a