Sharp PC-4500 Battery

[DocSleep]

I have a working sharp PC-4500 from late '80s. Unable to find a replacement proprietary lead acid Yuasa 6V battery. Has anyone been able to solve this problem?

 

[modem7]

Welcome to these forums.

Obviously, you have a suitable AC adapter for your PC-4500.

Has anyone been able to solve this problem?

One solution would be use a 6V motorcycle lead-acid battery, sitting outside of the computer, but I am very sure that you are seeking something that fits within the battery compartment.

 

[powerlot]

Have you tried searching UPS batteries? They come in different sizes, maybe the 2 or 3.2 Ah ones would fit the compartment