Conrad energy 42 piece button cell battery multipack conrad energy 650868 p this 42 piece multipack of button cell batteries includes the most popular sizes for clocks games calculators radios cameras remote controls etc and more this multipack also includes a battery tester p p these button cell batteries produce reliable steady power output for a long life on many small electronics the included six button cell battery sizes in the pack are alkali manganese ag1 ag3 ag4 ag10