Temperature when storing batteries importance

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I have read on this great forum about battery temp storage. I seem to be seeing two different max temps. 85 and 104 degrees Fahrenheit. I am hoping to store  the batteries  in my garage over the summer and it most likely will be somewhere between these two temps but def not over 104. Is this ok?
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Posted 9 months ago

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Be prepared to lose up to 35% of storage capacity permanently in a year at that temperature. 

Bottom line, store cool and never at 100%.  40% is ideal for storage.

To extend battery life, i suggest not charging after finishing with tools. Charge up the day you plan to use the tool.  Lithium batteries do not like being at 100%.

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Amber F., Official EGO Rep

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Official Response
Hi David! For best results, we recommend storing your battery pack where the temperature is below 80°F (26°C) and free of moisture. On the other hand, your battery should be charged in a location where the temperature is greater than 32°F (0° C) and less than 104°F (40° C).
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Gary Luethans

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Hi there.  I have a related question:  is it OK to keep the battery charger in the garage during the summer or should I bring that inside as well as the batteries?  I live in Phoenix so summer temps are well over 100 every day.  Thanks.  Gary
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szwoopp, Champion

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yes inside would be a better location for charging and storage due to the high temperature