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Thread: Ryobi One - battery

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    Should Get Out More Horse's Avatar
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    Default Ryobi One - battery


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    I have a couple of 'One' tools and a single 5Ah battery.

    From fully charged it's down to one 'bar' (of 4) after three weeks. Normal or faulty?

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    Should Get Out More Cousin Jack's Avatar
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    Default Re: Ryobi One - battery

    Quote Originally Posted by Horse View Post
    I have a couple of 'One' tools and a single 5Ah battery.

    From fully charged it's down to one 'bar' (of 4) after three weeks. Normal or faulty?
    IME par for the course. Cordless tool batteries never seem to hold their charge for any length of time.

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    A Bit Bored Ade01's Avatar
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    Default Re: Ryobi One - battery

    They do drain slowly over time but I wouldn't say that much. My One+ 4ah battery was last charged in January before I used it in my impact gun to swap wheels over. Checked it today & it still has 4 bars.

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    Default Re: Ryobi One - battery

    I have a drill ('Fat Max'?), with two batteries, they hold charge for ages, so I was a bit surprised by this.

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    Should Get Out More Kneerly Down's Avatar
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    Default Re: Ryobi One - battery

    My One+ batteries might drop a bar a month...not 3

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    Default Re: Ryobi One - battery

    Just reading this thread looked at my makita batteries 5ah charged them over 6 months ago, still full and not even moved a bar.

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    Should Get Out More Derek Badger's Avatar
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    Default Re: Ryobi One - battery

    What kind of battery is it? NiMH, LiPo, Li-ion etc.

    Istr that some hold charge better than others.




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    Should Get Out More Derek Badger's Avatar
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    Default Re: Ryobi One - battery

    Looking into it they are Lithium + (Li-ion) units so if you're getting that much self-discharge (ewwww) it would suggest a faulty unit. Is it still in warranty?

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    Default Re: Ryobi One - battery

    Quote Originally Posted by Derek Badger View Post
    Looking into it they are Lithium + (Li-ion) units so if you're getting that much self-discharge (ewwww) it would suggest a faulty unit. Is it still in warranty?
    Yes, it's:
    - Powerful 5.0Ah Lithium+ battery gives more power, longer runtimes and better durability than previous lithium technologies
    - 4 Stage fuel gauge displays remaining power (100%, 75%, 50%, 25%)
    - IntelliCell™ technology monitors and balances individual cells to maximise run-times, storage life and safety


    And still under warranty (only 8 months old).

    I contacted the retailer (CBS Power Tools), their response:
    As you might be aware batteries do naturally lose their charge, dependant on the state of the battery and the cells inside. At this time of year the cold weather may quicken up this process. We suggest that you keep your batteries stored at room temperature to keep their optimum usage.

    I asked whether my experience, with it kept indoors, is reasonable? No response, so have contacted Ryobi directly.

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    Default Re: Ryobi One - battery

    My 5Ah One+ battery is probably 6 years old and is doing much better, even in the cold (and it is cold up here) weather.
    Same with my 2x 2.5Ah bats. The ones I have/had under 2Ah have generally had much shorter lives.

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    Default Re: Ryobi One - battery

    Reply from Ryobi:

    That sound high!

    Li ion battery's self-discharges about five percent in the first 24 hours and one to two percent thereafter in the following months of use. At higher temperatures, the self-discharge on all battery chemistries increases. The self-discharge of a battery increases with age and usage. Once a battery exhibits high self-discharge, little can be done to reverse the effect.

    Regards
    Technical Desk


    That now FW to CBS Power Tools.

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    Default Re: Ryobi One - battery

    Quote Originally Posted by Horse View Post
    Reply from Ryobi:

    That sound high!

    Li ion battery's self-discharges about five percent in the first 24 hours and one to two percent thereafter in the following months of use. At higher temperatures, the self-discharge on all battery chemistries increases. The self-discharge of a battery increases with age and usage. Once a battery exhibits high self-discharge, little can be done to reverse the effect.

    Regards
    Technical Desk


    That now FW to CBS Power Tools.
    In all fairness to Ryobi all batteries are a bit of a lottery, look at some of our bike batteries, dead in 6 months or sometimes lasts years.

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