Charging the battery

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  • Updated 3 years ago
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Merged

This conversation has been merged. Please reference the main conversation: How best to safely stop charging a battery during the recharge cycle?

Is it better to let the battery fully discharge prior to putting it on the charger, or can it be placed on the charger after each use without ruining its run time?
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Leonard Bobrowski

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Posted 3 years ago

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Blue Angel, Champion

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You can charge whenever you want, no need to deplete it before charging.

I personally charge before use, this way the batteries are not sitting fully charged all the time. This is supposed to extend the life of lithium batteries.
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Clark

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Thanks for re-inforcing my initial thoughts!
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Blue Angel, Champion

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I was in Lowes the other day and saw a "whole home" surge protector. Hadn't seen that before... might justify some research.
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David HD, Champion

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Is this what you are referring to?


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Blue Angel, Champion

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Probably. The one I saw was a Mike Holmes sponsored product, which automatically means everyone should buy one without a second guess. :-)
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David HD, Champion

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But of course!!!!!
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Leonard Bobrowski

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Thank you.
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Blue Angel, Champion

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Any time! :-)
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David HD, Champion

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Similarly to Blue, I normally charge my battery the day of yard work - no matter how much juice is leftover from previous weeks.  Since the charger charge it under 45 minutes or less, and if you have a rapid charger, then it could be 30 minutes, no need to charge these batteries weeks in advance.
(Edited)
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Blue Angel, Champion

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Absolutely. I usually know at least an hour or two ahead that I plan to mow the yard, and these chargers are so fast you can pretty much just charge on demand. This technology is amazing!
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Ken, Champion

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My routine is similar except I usually charge my batteries on the standard charger the night before I mow, or the morning I'm going to mow if I'm going to mow after work. But I'll use the rapid charger if I forget or need to replenish the charge if the grass is particularly thick and kills the battery quicker.
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Joe Fraser

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I charge just before use as well - 45 minutes gives me time for a few Canadian beers before all the yard work :-)
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Blue Angel, Champion

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Beer before yard work makes the lawn look better, too! :-)
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(a)Typical Engineer

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Lithium Ion batteries should be stored long term at a 50% charge.  Deep discharges actually hurt the long term life of the cells, so it would actually be better to "rest them" rather than run them until the red light comes on.  For example, I only have 2.0 and 2.5 AH batteries, so when I run either the blower or the mower [1], I will run them for about 20 minutes, then swap to a freshly charged battery.  It is actually very noticeable when you swap from a fully discharged (RED) battery, over to a fully charged one (in terms of motor speed). Which actually is a good indication that you ran your battery down too low.

I also let the batteries cool to room temperature before re-charging them, sometimes overnight.  And then I charge them back to 100%, since I'll probably use them the following weekend.  The long term storage above is like over winter, which we don't have here in Hawaii, so that isn't a problem. =)

[1] I bought the LM2000 off craigslist, and the seller kept the 4.0AH  battery and rapid charger; and I guess I should have read the specs on what was included, to know he has swapped the 4.0 for at 2.0... =(
(Edited)
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David HD, Champion

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Agreed!
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brinox

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EGO's batteries have a built-in discharge function.  After 30 days of no use, they will automatically discharge to somewhere between 30 and 40%.  This is the ideal range for lithium based batteries that aren't being used in the long term.
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Kathleen

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Do you have to leave the battery in the charger for it to do the discharge function?  Or will the battery do that on its own when stored separately (i.e. just sitting on a shelf)?
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Ken, Champion

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No, you don't need to leave the battery in the charger. It will discharge on its own.
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szwoopp, Champion

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Per the Manual the Battery Pack will self discharge (charger not needed)

BATTERIES
The battery pack is equipped with Lithium-Ion rechargeable batteries. The duration of
use from each charge will depend on the type of work performed.
The batteries in this tool have been designed to provide maximum trouble-free life. Like
all batteries, they will eventually wear out.
Do not disassemble the battery pack or attempt to replace the batteries. Handling of the
batteries, especially when wearing rings and jewelry could result in a serious burn.
To obtain the longest possible battery life, read and understand the operator’s manual.

It is good practice to unplug the charger and remove the Lithium-Ion battery pack
when not in use.
For Lithium-Ion battery pack storage longer than 30 days:
Store the Lithium-Ion battery pack where the temperature is below 80°F (26°C) and
free of moisture.

Store Lithium-Ion battery packs in a 30%-50% charged condition.

Every six months of storage, fully charge the Lithium-Ion battery pack.

Exterior may be cleaned with a cloth or soft non-metallic brush.
NOTICE:
This battery pack has equipped with an advanced self-maintenance
function. It can maintain 30% of its charge capacity automatically after it is stored over one month.

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