The Tektronix 1104/1104A is a 12 V, 8 A battery pack with a built-in mains charger for the 2225, 2211, and 2214.

Tektronix 1104A
battery pack for 22xx scopes
Tektronix 1104A

Produced from 1990 to (?)

Manuals
(All manuals in PDF format unless noted otherwise)

Option 07 in either scope adds an internal inverter, allowing it to run on 11.8–30 VDC.

That, plus the 1104A battery pack, enable the scope to be battery powered. (Option 30 includes Opt.07 and an 1104A.)

The 1104A couples to the rear of the scope.

Key Specifications

DC output 12 V, 8 A
Battery sealed lead-acid gel type
Power 95–128 or 185–250 VAC
Charging time 16 h (longer when scope is operating)
Weight 6.5 kg (14 lb)

Pictures