Sharpen Your Mower Blade For Better Battery Life

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I know I posted this in a question and it has been mentioned, but I wanted to share anyway. There is an area of grass that is always thick and lush in my back yard (good soil). This area always runs through a whole battery (the 4) despite being only about 6'x120'. Today before going out I took my blade off and sharpened it with my trusty hand-held $9 garden tool sharpener. This effectively doubled the battery life. I had enough to do an easier (though same size) part of the yard and then switch the battery to the trimmer for a go around a very weedy area and then a touch up around the fence before I had to switch to the 2nd battery. So, sharpen that blade and keep it that way my friends.The tool I have:
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Posted 5 years ago

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David Cline

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Yep, definitely true! I have two blades that I swap out whenever I mow, allowing me to sharpen the other blade at my convenience. I never mow more than twice on a blade before swapping it out with a freshly sharpened one.

Also, the sharpening angle for a mower blade is usually more blunt like an ax so that it will last longer between sharpenings. You can get a cleaner cut by sharpening at a narrower angle like a knife, but the blade will get dull faster and need to be sharpened more often.
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Thanks I have been looking for something like this.
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Big D Bill

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I have a similar tool I got at the local hardware store, works like a champ! However, it will not remove dings in the blade but i use a Dramel tool for those.
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Ken, Champion

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I picked up a spare blade last night after work because I dinged the blade that came with the mower. It was my fault, accidentally hit a chunk of concrete. The blade fared better than I expected.

I also picked up the sharpener from the link above. It seems very useful so far. Thanks for the recommendation!

I plan to sharpen the new blade a bit before I put it on the mower. I look forward to seeing how the battery life compares to the dinged-up blade.
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Awesome Ken, let us know.  Glad I could be of help.  I've been thinking of getting a second blade just to swap around like David said does.