anachrocomputer:
Fitting the first new battery
anachrocomputer:
Inside the HP22
anachrocomputer:
Removing the defective battery
anachrocomputer:
Cutting the plastic rib
anachrocomputer:
HP22 calculator, working again
anachrocomputer:
Plastic rib cut
anachrocomputer:
Two new NiCad batteries fitted
anachrocomputer:
Inside the HP22 calculator
anachrocomputer:
One old battery removed
anachrocomputer:
HP22 PCB
anachrocomputer:
Original HP22 battery pack