Deli Q&A
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How do I change the battery in the Deli E837 Calculator?
Answer posted 5 months ago 1 answer
Deli, E837, Standard Function, Desktop Calculator, User Manual

How do I switch between solar power and battery power on the Deli E1120 calculator?
Answer posted 5 months ago 1 answer
Deli, E1120, Standard Function, Basic Calculator, User Manual