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342 Points
Posted 2 years ago
Blue Angel, Champion
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179,968 Points
If you can get multiple uses out of a single charge I think that’s the right way to go. Keep on keeping on. :-)
Blue Angel, Champion
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179,968 Points
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342 Points
Blue Angel, Champion
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179,968 Points
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342 Points
szwoopp, Champion
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105,710 Points
Looking forward to 5 - 10 years of battery life.
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26,632 Points
Summary: Thoughts on running the battery all the way down to flashing RED
Regarding running the battery all the way down, my personal choice is to NOT do that if possible.
Here is the primary reason, after installing a volt meter both my charger and mainly the mower, I noticed that the point at which a battery will first go RED, and then go flashing RED happens at different times for different tools and battery sizes. The onboard battery management system (BMS) for each battery should be designed to "cut-off" at the same voltage, but based on manufacturing tolerances (of the electrical components), as well as the cells themselves, the cut-off voltage can vary. Refer to my related threads, I've measured a battery voltage as low as 39.9v (2.85v/cell). The only other reported voltages have been around 45v (3.21v/cell).
And here's where I become a little concerned, the further you discharge your battery, the more you're potentially affecting long term life. So I have two 5.0 AH batteries, and when I get one down to about 25%, which is above the GREEN/RED transition of 15%, I will stop using that one and change over to the secondary one. Same basic approach for the string trimmer; and the only time I'll run it down to red is if I'm rather far from the house, and I want to finish up that last bit of trimming without having to walk back twice. For the 535cfm blower, I'm very cautious to not run that down to red, especially when using turbo because you are drawing a lot of power out of the battery in a short amount of time; yes, it can handle that, but at what cost to long term battery life (put in that second battery if you have it).
Related threads:
Ego Battery Review from a Battery Engineer
https://community.egopowerplus.com/ego/topics/ego-battery-review-from-a-battery-engineer
HOW-TO: Add a digital volt meter to the CHARGER
https://community.egopowerplus.com/ego/topics/how-to-add-a-digital-volt-meter-to-the-charger
HOW-TO: Add a digital volt meter to the MOWER
https://community.egopowerplus.com/ego/topics/how-to-add-a-digital-volt-meter-to-the-mower
Blue Angel, Champion
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179,968 Points
szwoopp, Champion
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105,710 Points
Is this why my 2.0 and 2.5 batteries sometime show red when on the blower and then if I stop blowing and restart the battery will display green ?
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26,632 Points




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26,632 Points
Blue, technically speaking, I could measure the cut off voltage for my mower (but have not done so yet). =)
Blue Angel, Champion
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179,968 Points
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