The Olivetti Logos 9 Calculator is a rechargeable printing basic calculator. It comes in two versions, a silver and a black version. Internally, the calculator uses three button cell NiCd batteries.

The original battery is about 1″ (2.5cm) in diameter and I suspect smaller batteries can also be used even if they will not allow the calculator to work independently for long.

Unfortunately NiCd batteries of this type are no longer available, but NiMh batteries are, like this Varta CP300.

For inquiries please use the form below.

    Please do not use this form to send solicitations or sales pitches of any kind. Messages like these will never be answered and all you will accomplish is waste your time because it is very likely my spam filter will reject the message outright.

    Please make sure your email address is correct. Without a valid email, I will not be able to answer.

    Thank you