I am trying to gauge the battery life with the new mower I bought, and the best way is to get an idea of how many charge cycles the battery is expected to last (and divide that by the number of times a year I mow). However I can't find this specification published anywhere.
Lithium Ion cells are typically good for over 1000 cycles. There is no data specific to the Ego packs that I'm aware of, so general statements will likely have to do for now. Regardless of your usage, if you are a home owner and not using them for commercial applications the packs are warrantied for 3 years.
Here is what the mfg quoted me in an email when I asked that same question... "...in regards to battery life, we cannot guarantee the
life duration of our batteries, as the battery life is usually measured in
terms of recharge cycles. It is nearly impossible to predict the
number of cycles your battery will produce because of varying
environmental conditions. "