To help, we’ve teamed up with JustAnswer to connect you to a qualified Appliance expert. We’re fortunate enough to have a lot of readers on our website, but unfortunately, I can’t answer everyone’s questions personally.
Ryobi 18 volt battery pro#
If all this has failed, it might be time to get a pro to look at your battery. And you should be good to go when it’s above 7 volts. Try testing the battery voltage, then doing quick ‘mini-charges’. In my experience, you need around 7 volts before it should charge fully again. The voltage will increase as it gets fuller. We should be looking at 18V or higher at a minimum. Got a Multimeter?įor any DIY-ers, being able to check the voltage can often confirm the problem for us.įirst, test your charger. Once connected, leave it for 5-10 minutes.Īs above, this should be enough time to get the battery above the small % of charge it needs to work properly again. Simply connect the contacts positive-positive and negative-negative.ĭo not get this wrong! It must be P-P and N-N or you’ll damage your battery. This can either be another battery (ideally of the same model), or a DC power source. Meaning it’s got enough charge back in it to realize it’s healthy.Ĭraftsman vs Ryobi Power Tools: A Clear Comparison Alternative Fix Method: Power Sourcesįor the more confident electricians out there, we can do this in one move by connecting the battery to a power source. You should be taking it out just before the green and red lights come on.Įventually, the battery should give you the green lights as normal. Making it realize that it’s safe to be charged.Īll we do is place the battery into the charger, count to 2, then take it out again. Those couple of seconds are how we bring it back to life.īy doing this enough times (it can take up to half an hour) we bring the battery back up above the low threshold. When you connect it to a power source there’s 2-3 seconds of charging before it says “stop, I’m asleep!”. While the battery, once awake, might refuse charging – we CAN give it tiny charge boosts.
Ryobi 18 volt battery how to#
How to Fix A Ryobi Battery In Sleep Mode: Charger Method This is one of the most common causes of so-called ‘defective’ Ryobi battery cases. So to prevent damage or abuse, it enters ‘Sleep Mode’ and can’t be charged. Then it’s left on a shelf for a long time, where it slowly loses even more power.Īt this point, the battery can’t tell if it’s healthy or not. Typically this happens when a battery is used up until it’s normally dead. This happens when too much juice has been used up in the battery, and the power level is almost completely emptied. It’s because of a thing called ‘Sleep Mode’. If we’re not careful, lithium-ion batteries can fall into hibernation. Remember to check this for both the battery and the charger. You shouldn’t need to do this too hard – just until you’re working with clear contacts again. Rusted contacts? Grab some old sandpaper and give it a good scrubbing. If it’s covered in gunk or rusted, you’re not going to be passing any charge through it!ĭirty contacts? Give them a good wipe down with a wire brush or an alcohol-soaked wipe.
How clean are the contacts on both the battery and the charger? If it’s been exposed to extreme temperatures for a long time it may have suffered permanent damage. If the battery has been stored in a cooler or hotter place than that, get it back to room temperature before trying again. Lithium-ion batteries are made to be charged between 41 oF and 113 oF (5 oC and 45 oC).
We take batteries for granted, but they’re not invincible. The easiest thing to check is your charging temperature.
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