Why does battery flash green/red/orange?

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  • Updated 2 years ago
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Both my 4 Ah and 2 Ah batteries went defective this year. Called and (after 20" on hold waiting to get through) spoke with Joe who advised going back to HD and asking them for an exchange. They or course had no idea what to do...so we called back from the store (another 20" wait to get through). Joe wasn't in...still waiting to hear back. Meantime, I ordered a 7.5Ah from Grainger. On both rapid and standard charger it flashes as above. Is this normal? On rapid...doesn't go past 50% even after 40". Both chargers flash green.
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Mathew Cannava

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Posted 3 years ago

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SCDC, Champion

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Were they defective within 90 days of purchase?  I would email support so you can get some documentation going.  That response doesn't sound like typical EGO.
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Blue Angel, Champion

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Official Response
Mathew, the battery status indicator does cycle through all three colors while charging. Once complete it lights up green and stays that way until the fans in the charger shut down.

The 7.5Ah battery is supposed to take 60 min to charge on the rapid charger. Have you tried leaving it for longer than 40 min?
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David Cline

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Which begs the question, at what point are the batteries big enough to justify an even rapider charger? In theory the 7.5Ah could charge 50% faster since it has more cells.

Then there's the upcoming backpack blower and the dual-battery snow blower? If you don't have 2 rapid chargers then one battery still charges slowly.

How about a dual dock 240v charger? Or can a standard outlet deliver more juice than the current rapid charger draws?
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SCDC, Champion

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That makes 2 blue.  You've taken my comments and turned them around on me into challenges to test.  LED Lights and 7.5Ah battery charge.  Check.  

I feel like i'm in the game portal.   Test Test Test.
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Blue Angel, Champion

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SCDC, your inbox is piling up, try not to get behind! :-)
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Blue Angel, Champion

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DC, I was thinking about that a while ago. The highest Rate Of Charge is currently found in the 2.5Ah battery at 30 min. Each cell in that pack averages about a 20W input over the 30 min charge time.

The 7.5Ah pack uses cells of the same capacity as the 2.5Ah pack, but it takes twice as long to charge them. So each cell in the 7.5Ah pack only has an average of about 10W input over 60 min.

Since the same is true when discharging the packs (7.5Ah lasts longer than the 2.5), less power per cell is pulled. This means the demand on each cell in the 7.5Ah pack is much less than it is in the 2.5Ah pack, both when charging and discharging.

High draw Lithium cells are specified by their ability to supply power. You'll see cells rated at a certain current draw, and generally speaking the more discharge current a cell can support the more expensive it is.

This means that the larger the packs (as in the more parallel string of cells), the cheaper the cells can be. The 2.5Ah pack has a single string of 14 cells, and the 7.5Ah pack has three strings of cells wired in parallel. For a given power output the cells in the 7.5Ah pack will be under 1/3 the load compared to the 2.5Ah pack in the same application.

If Ego does use lower current cells in their 7.5Ah pack, that could limit their ability to be charged at a higher rate.

But to answer your original question, the Rapid charger is rated at 550W. Since you can reliably pull three times that much power from a 120V 15A circuit, I don't see a need for 240V chargers any time soon. :-)


The dual bay Rapid charger is something I thought of a while back when Makita released their dual bay charger:


Dual bay, fan cooled, simultaneous Rapid charger has a nice ring to it, no? :-)
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David Phillips

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The 7.5 supplies great power which is needed for the self propelled mower. Smaller batteries would get hot. You will get more power on the trimmer as well when using the larger battery.
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Mathew Cannava

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Oh, Joe said they'd replace them. He was very nice. HD of course, when I went in and asked to simply exchange it...looked at me with blank stares. We called 5 days ago and I haven't heard back yet (maybe he's called HD already, I don't know?). I emailed 3 days ago and have yet to receive a response. 

Ok...so going through all 3 colors is normal. Thank you! It's now been on the rapid charger 2 hrs and is showing 75% on the charger....
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Mathew Cannava

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Reached 100%...I may have just worried needlessly!
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Dave .

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and maybe you didn't read the instructions??
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Mathew Cannava

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Thanks for the constructive thought Dave:) There is nowhere that I saw in the instructions that says what green/red/orange means.... I searched in the forum as well...no dice.... Thanks again! :-
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Dave .

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sorry but the instructions on page 14 of the charger owner's manual indicate the light sequencing
(Edited)
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Mathew Cannava

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The instructions for the battery that I just received make no such reference. Would you not think that battery's instructions should tell you what the battery is doing? The charger was blinking all green and I had no concerns with it. 

Ok Dave...whatever...you win. Have a great day. 
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Dave .

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I "win"?  OMG, you really don't like being told there are directions with the charger that should be read, do you?   Sorry I wasted my time showing you the appropriate page from the instructions.
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Blue Angel, Champion

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Mathew, let's hope that's all it was and that you're in for clear sailing from here!  :-)
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Jennifer VandeWater, Community Manager

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Matthew, as Blue said, let us know if you have any further issues. At first glance, I couldn't figure out what the issue was because those three different lights are normal operation in the charger.  We're sorry we didn't catch this sooner and weren't able to figure that out right away.  If you notice any more problems, we're here to help.
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Greg Thiessen

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It is confusing. I purchased a blower last week and when it's battery was in the charger, the battery flashes a steady green. I ordered a new mower which is scheduled to be delivered tomorrow however the 7.5 amp battery arrive today separately. Just the battery and charger, no manual or instructions. When I began to charge the battery and saw the green, yellow ,red cycle I was also concerned that it was defective until I read this post.
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Exrace

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Might be the "size" of the battery and the firmware that changes how the charge sequence is displayed. I will have to test my batteries to see if mine exhibit the same behavior .
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Jacob

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Umm.. this is the charge sequence for the battery. Is and always has been. Well for me
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David Phillips

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The good news is you now have plenty of batteries
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Michael Phelan

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This reply was created from a merged topic originally titled My 56 volt battery will not charge and is flashing green, red yellow. This is my ....

Battery will not charge. Light flashing green-red-yellow.

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