I’ve been tracking how much power it takes to charge my Ego batteries since I purchased them. I’m using this as a stand in for how much capacity they retain over time. You should know that I have a large lawn (in Florida) and cycle these batteries at least once a week (more in the summer) so these batteries are getting more of a workout than if you had a small city lot that you could mow a few times before charging the battery.<\/p>\n
I have two 7.5 AH batteries (one bought before the other<\/a>). They took 410 watt hours to recharge when new. After one year of usage, the remaining capacity was (78% 320 w\/h and 82% 340 w\/h) on the two batteries. My older battery has two years of use, and has 70% of it’s original capacity (290 w\/h). \u00a0 So it looks like they drop between 18 and 22% of their capacity the first year, and an additional 8% the 2nd year for a total loss of 30% of their capacity after the 2nd year of usage. [The batteries have a 3 year warranty.]<\/p>\n Update: See my new post<\/a> at the 3 year mark for the 2014 battery (and 2 year mark for the 2018 battery).<\/p>\n","protected":false},"excerpt":{"rendered":" I’ve been tracking how much power it takes to charge my Ego batteries since I purchased them. I’m using this as a stand in for how much capacity they retain over time. You should know that I have a large … Continue reading ![\"30%](\"https:\/\/www.summet.com\/blog\/wp-content\/uploads\/2019\/12\/2-year-graph.png\")
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