An attachment with a 3 4 in 1 9 cm opening should work well.
Are attic usually dry.
Though attics are typically hot and dry a leaky roof or pipe condensation or severe weather can cause water to enter your attic.
According to duracell the prime environment for batteries is somewhere dry and room temperature.
At high temperatures like the ones you might find in your attic batteries can rapidly lose power or may even start leaking potentially setting you up for a chemical burn.
Top causes of attic moisture.
Few attics are heated or cooled so they re extra hot in the summer and frigid in the winter.
Make sure you also have an attachment that will connect the wet dry vac to the drain line.
The warm moist air inside the vent tends to condense on the colder walls.
Air conditioner condensate pan not draining.
Clothes dryers venting air to the attic rather than outside.
Plus being up high with plenty of airflow can make the space inside a fairly dry environment such temperature fluctuations and aridness mean you should keep things like upholstered furniture delicate fabrics electronics and candles out of attics.
Buy or rent a wet dry vac with attachments if you don t have one.
Inadequate ventilation attics must be vented to allow moist warm air to escape.