why does my battery go dead while its in the charger plugged up?

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  • Updated 7 months ago
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Why does my battery go dead when its on the charger? I use it once a week and after use I put it back on the charger and it seems to charge up fine but when I come back a week later and pull it off of the charger its dead Why?
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David

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Posted 7 months ago

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Oregon Mike, Champion

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Since you are able to use it every week, then it seems like it can take a charge. Are you saying it dies during the week and you have to charge it again and then use it right away? 
Another thing to try is after charging the battery, remove it from the charger and then try it in a week.
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David

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After I use it I put it back on the charger to charge back up and leave it on the charger for a week. When I come back to use it a week later it’s dead
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Oregon Mike, Champion

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Yeah, next time try charging the battery and taking it off the charger for the week. See if the battery holds a charge since it won't be on the charger.
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David

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I’ll try it thanks
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Blue Angel, Champion

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David what Mike is suggesting will rule out the battery if it’s working OK.

Something is definitely wrong, so ruling out the battery has a good first step. It could be that your charger needs to be replaced. You should be able to leave the battery in the charger indefinitely without worrying about the battery being dead when you go to use it.

Having said that, the battery will go into long-term storage mode after 30 days of not being used regardless of whether it’s sitting in the charger or not. In this case it will only discharged to about 30%.
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ceedub

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I have the same issue. I have a 2Ah battery that looses about 50% of it's charge after sitting for 3-4 days. It doesn't matter if the battery stays connected to the charger or not. I have a fast charger and standard charger. My impression is that the chargers do not re-charge the battery if left in. A smart charger will sense the voltage of the battery and recharge automatically if it drops. I have two other batteries that do not lose their charge so I can't use them in this example. The charger will recharge them after they have been used, as with the 2 Ah battery. If the chargers are supposed to be auto-recharge if the voltage drops on the batteries, mine are defective.
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szwoopp, Champion

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Batteries should not lose their charge just by sitting for a week.
Batteries will auto discharge after 30 days (this is good maintenance for Lithium batteries) If on the charger the battery will not recharge until you remove and replece it on the charger to restart the charge cycle.

If your battery discharges after sitting for a few days, you should call customer service for a warranty replacement.
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giggleherz .

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I had no idea the battery's had auto discharge? Is that something built into the battery electronics or the charger?
 My battery was stored inside for six months and I dropped it into the charger to top it off and the charger lit up full scale. It had a full charge and I cut the grass as well so is my battery defective or my charger?
 I know they say that seventy percent is a good point to store these batteries but my Ipad for example is five years old and its always on the charger. The battery is always at 100% and I can run it down to forty or even ten percent and it still goes back to full charge.
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szwoopp, Champion

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It is in the battery.
Best practice for long term storage is 30% to help maintain the full charge and power capabilities of the battery.
I would say the 100% display on your ipad is one thing,  The length of time that the "100%" charge runs the device is probably less than when it was new.
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giggleherz .

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I might test the Ipad and let it run down to its lowest point, I do believe in the math behind these batteries but in reality they just seem to keep going and going.
 Having said that I think might nick name my batteries, (EGO Bunnies)