Fast or slow battery charger better for battery life/longevity?

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I have multiple Ego products. The lawn mower came with the fast charger and the other products came withe the regular/slow charger. Just curious, but is it better to use the regular battery charger than the fast charger for battery life/longevity? I don't mind if it takes longer to charge the battery. Or does it make no difference?
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Posted 2 years ago

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szwoopp, Champion

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Official Response
Yes a slower charge would theoretically be better for the battery life.  But with egos battery management system and temperature controls, not sure if you will ever see that difference in a meaningful way. 
But, as you said if you are not in a hurry then might as well use the slow charger. That is what I do unless I am in the middle of a job and need the battery to get back to work.