Shouldn't Rapid Charger cutoff when battery is fully charged?

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  • Updated 3 years ago
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  • (Edited)
After having a defective battery, I received a new battery and new rapid charger just in case it wasn't the battery. The original battery wouldn't charge with the new rapid charger either, so it it was the battery. But now, when I charge the new battery with the new rapid charger, it never completes! It does indicate increasing charge going from 25 to 50 to 75 but then at some point goes back to indicating the battery is completely discharged and then just continues charging indefinitely with the the 25-50-75-100 sequence. What is going on? Disappointed with Ego quality. This along with the lack of proper mulching as many have said. Also side chute has not showed up.
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SR

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Posted 3 years ago

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Exrace

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How long have you left the battery on the charger?
What size battery?
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SR

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About 35 mins.
7.5Ah
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Blue Angel, Champion

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The 7.5Ah battery takes about 60 minutes to reach a full charge if it is completely depleted. Is 35 minutes the longest you've tried to charge?
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SR

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Ok, I assumed it would charge in 30-mins like it says since it was all in one kit (LM2102SP). The battery was not close to fully depleted. My mowing time won't drain it, but after next mow I will charge it closer to 60 mins and see if it stops.
(Edited)
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David Cline

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I don't think the mower actually gives charge times, just run time estimates for the included battery.

This is from the separate rapid charger manual that should have been included in the documentation packet::



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SR

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On one rapid charger, but not the other, it says 30 minute charge time right on the front of the unit. What I meant was since I bought the one package with mower, rapid charger, and battery (shipped separately), I assumed 30 mins was for my battery.Thanks for pointing this out David. Lot of rain for the next few days. I'll post back on how it goes.
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Blue Angel, Champion

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SR, what happens when you put the new battery on the old charger?

It's possible the new charger is defective, but problems with chargers are not very common. You may have just gotten extremely lucky! :-)
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SR

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I'll need to mow again to drain the battery down and will try the old charger.
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SR

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Thanks, it looks like it was just timing. I left it in for an hour and all 4 bars lit up and stayed lit. The charger fan remained on though. Does it run for a bit after completing charge to help with cool down or will it not stop until you review the battery?

I'll try the original charger next time.
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David HD, Champion

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Official Response
SR, according to the Manual for the Rapid Charger, the LEDs will stop alternating when it is fully charged, and will "shine green" continuously.  It also indicated that the power indicator on the battery pack will go out.  Do you see this on your battery?

Secondly, wait until the cooling fan stops before removing the battery pack from the charger.  One of the neat features of this charger is that it will not overcharge, even if you decided to leave your battery on the charger.

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Blue Angel, Champion

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My understanding is that the fans run to continue cooling the battery after charging is complete, but it's technically ok to remove the battery at any time during the charge cycle. For example, if the battery doesn't make it through the whole yard and you only need a few more minutes of cut time, you can put the battery on the charger for ten minutes or so for a partial charge and then continue mowing.
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SR

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Thanks for that info David.

I can't recall if the battery indicator light went off or not. I'll look for that next time since I'm curious now...
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David HD, Champion

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You got it!!!  A while back, I came across a YouTube video from jettlash1000 on the Cost to Run an Electric Mower.  In this video, he calculated how much it would cost to run his EGO lawn mower vs. a gas mower.  He also confirmed that once your battery is fully charged, it will "do you no good" to leave it plug in, as it will not draw any more charges from the outlet - which is what the manual indicated as well.  A good video to watch - it's only 3.04 minutes long.
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David HD, Champion

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Sorry, I forgot to include the link to the YouTube video - here it is!

https://www.youtube.com/watch?v=OVZBdXxaYAg
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bloomz

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Thanks David for that video, way interesting, tho I'm not sure I can afford that cost to run this thing.