Should I leave the battery in the charger when not in use?

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  • Updated 3 months ago
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I want the batteries to last as long as possible. I am concerned of over charging and reducing life. What is the best way of storing the batteries? i.e. In the device, on a shelf, or on the charger? Furthermore... I get 2-3 uses out of a charge. Should I charge them after every use or run them dead before charging again?
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Posted 4 years ago

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Blue Angel, Champion

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Hi Mike,

The Ego battery/charger system is designed so that you can pretty much do whatever you want with your batteries and they will live long, healthy lives.

You can definitely leave a battery in the charger between uses without hurting anything.  Just know that the batteries have a long term storage mode that kicks in after 30 days of non-use.  At that time the battery will self discharge to 30% capacity.  If the battery is still in the charger you will need to remove and reinsert the battery into the charger to get it to charge back to 100% capacity.

You do not have to charge the batteries after each use, and the batteries do not have to be fully discharged before charging, such are the benefits of modern Li-Ion cells.  In fact, sitting for long periods at a partial charge is better for them, hence the 30% capacity storage mode programmed into the batteries.

My personal approach is to charge them immediately before using them.  This minimises the amount of time they spend sitting at full charge.  Mind you, I'm really nit-picking here... the long term storage mode programmed into the batteries really is the 90% solution.  You won't be hurting the batteries to just keep them charged.

In a nutshell, if you're getting 2-3 uses out of a charge and letting the batteries sit in between, just keep on keepin-on!  :-)
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Jean St Louis

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Can it be left in the machine indefinitely.

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S. Bedard

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Hi, for cold climate user as for the snow blower, it is important to read the part of no charging below 5 degrees Celsius, 41 degrees Farenheit. A battery in the charger worked but the battery left at about 25 % power at -10 degrees Celsius, 14 degrees Farenheit, did not charged once installed on the charger. It is getting warmer Inside our house at this time.