My (2) 4 amp hour batteries are just about shot.

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My (2) 4 amp hour batteries are just about shot. They are a little over 3 years old. One is flashing yellow out of the mower the other lasts maybe 15min.  I am trying to decide between getting the snow thrower with (2) 7.5 amp hour batteries or getting a new mower with one 7.5.  My current mower is the original 20" model.  I am trying to get the best bang for the buck...  Is there much hope that getting 7.5 batteries in my 20in will keep the overloads to a minimum thus helping them last longer than a few months over their 3 year warranty?

I currently have a plug in snow joe that works fine.
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pincoat

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Posted 4 months ago

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Blue Angel, Champion

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My 20 inch mower tends to run better with the 5Ah battery compared to the 4Ah battery. It just seems to have a bit more power, and obviously more run time as well.

I would assume the 7.5Ah battery would continue that trend, although I don’t know how much of a power output increase you could expect. Minimal if any, I would guess.
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pincoat

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Then I could get the Snow Thrower with (2) 5s and save a little.  I think I'd rather expand my ego line and have two workable batteries vs replacing a mower that works fine otherwise.  
(Edited)
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szwoopp, Champion

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That sounds like a good plan
(Edited)
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pincoat

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So, blinking orange/yellow according to Ego means that the battery is dead.  

My final decision was to purchase a 5 amp hour battery ($220) and the Self Propelled Mower Kit that comes with a 7.5 amp hour battery (and the 1000 watt motor) ($500).  I have also cashed in all the credit card points I had.  Expensive, but hopefully worth it in the long run.  I am a little disappointed I only got about 3.5 years out of my 1st gen equipment.     
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dhau001

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Batteries should lasts a lot longer than 3 years. I think the problem stems from leaving the batteries 100% charged all the time. To extend battery life (significantly), charge the day you expect to use it then don’t charge until the next time. Leaving the batteries completely drained is equally bad. If that’s the case, charge it for like 10-15 minutes then pull it.
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pincoat

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I will give that a try. I was maybe too trusting in the auto discharge taking care of things, though I know it only discharges after 12 weeks or so. Thanks for the advice, I definitely don't want to be in this situation 3 years from now.