How to charge the batteries properly?

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  • Updated 3 months ago
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Hi,
I have a general question regarding charging the batteries, in my case they are :

- EGO 56V 7.5Ah Battery
- 2.5Ah Batery

My question is, if I charge them 100% and leave them for 2-3 weeks (not on the charger), am I able to then just go ahead and use them when needed or I need to charge them again on the day of the use to get the fully charged battery, given it was charged 2-3 weeks ago?  
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Shawn T

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Posted 3 months ago

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Ken, Champion

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Official Response
They'll still be fully charged. The self-discharge function doesn't kick in for 30 days.
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William E Hanson

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I rotate (3) 5.0 Ah, (1) 7.5 Ah and (1) 2.5 Ah batteries depending upon the tool or task. I run them until the red comes on the gauge, fully charge on one of 3 chargers, put back into rotation on the shelf. None sits longer than 30 days before used. Seems to be good methodology.
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Rick Fortson

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My advise is to read the instructions and leave them on the charger.
I have been using L ion batteries (Dewalt) for years snd have always kept them on charger because the chargers are SMART and will tune the battery after it is charged.
It’s always worked for me keeping L ion batteries in tip top shape going on 15 years.
Only time will tell if these Ego batteries and chargers will be equally as good.— I think so.
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Prairiedog

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Yeah, as I understand it, the circuitry for the protection mode is in the battery, not the charger, so they can sit off the charger. Been working fine for us, anyway.
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William E Hanson

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Impractical unless you have a separate charger for every battery you happen to have. Yes, the chargers are smart, but so are the batteries.
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Jacob

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Battery experts will say keep them around 40% charged.
I say it doesn't matter because I'm on year 5 of my original 4ah
and year 4 on a 4ah battery and they still keeping up with the six 5ah batteries I have. These batteries seem to self prolong their lives. At this rate I expect 7 years from these, and that's with alot of unauthorized abuse too.
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Prairiedog

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Yep. That is the gaping difference between standard "dumb" lithium batteries and Egos.
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William E Hanson

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Jacob, good to hear since I'm on my 2nd season and had added many tools this year. I was fed up with other brands with old technology batteries that failed quickly.
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Shawn T

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Perfect, thanks everyone. That really helps.

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Shawn T

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One more question related to charging 2.5Ah Batery: Am I able to use the EGO 56V Li-Ion 30 Minute Rapid Charger to charge my 2.5Ah Batery? I believe EGO says I can, but just want to confirm here.

Thanks
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Jacob

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Yes. Everything is compatible on all their products batteries, chargers, tools