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Lithium ion batteries are a wondrous invention that are lightweight and long lasting.  But it'due south infuriating when the battery won't recharge.  Yous stick the battery in the charger and … nothing.  Approximate what? You can fix these batteries that appear to be completely dead.  Read on …

This post is Not sponsored past Ryobi.  They do not approve of or endorse this method for fixing a Ryobi battery. AT all.

Bound straight to the tutorial and how to video.

I of ii things are going to happen equally you read this post.  You volition either unfollow me due to my pathological boringness or … yous will propose marriage.  And then get ready to human action accordingly.

Since originally posting this tutorial a few years ago I've been hoping Ryobi would improve their batteries and chargers. And so I was happy to see the development of the newer Ryobi P117 Intelliport Charger. It'south supposed to practise a faster and amend job of charging your batteries but according to the reviews on Home Depot and Amazon they don't have this issue figured out quite yet.

What issue? I'll tell you.

If you have any sort of cordless power tool, only especially one powered past a Ryobi 18V battery, you have no dubiety encountered  the dreaded flashing red charger light.  And if yous oasis't … you will.  It inevitably goes like this – you lot run to the basement to grab your cordless drill because after ten years of thinking about it, you're finally going to build that 4 level, Tudor style treehouse with kitchenette.   Or you're going to hang a picture.

Either fashion you put your battery in the charger and all you go is a flashing ruby light, which co-ordinate to the label on the charger means your battery is lacking.  Information technology isn't just dead.  It'south "defective".  I'm here to tell you yous information technology isn't.  You probably left information technology in the charger too long which weirdly drains the battery.

Your battery is fine. Information technology merely needs a picayune heave.

• You Can Fix a Rechargeable Bombardment That Won't Accept a Charge.
• How to Ready an 18V Bombardment
• How to Fix a Ryobi 18v Rechargeable Bombardment

You Can Prepare a Rechargeable Battery That Won't Take a Charge.

You heard me right.  You do NOT take to buy a new $50 battery.  You exercise non have to telephone call the company and swear at them considering this stupid "defective" battery is only 2 weeks onetime. (although by all ways feel complimentary to exercise so) You do not have to await until they ship you a replacement battery to finish your project.  Y'all tin can become that battery up and working in about 5 minutes.

How to Set an 18V Battery

What You Need

• A lithium ion battery that won't charge. (duh)

• An Air-conditioning adapter (an erstwhile phone charger for example)

•  A multimeter.   (this is really optional simply helpful … if you don't have one don't worry, you can nevertheless fix your battery)

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Note: If you aren't used to doing this sort of matter, or using things like a "multimeter"  this is going to seem crazy and hard and way out of your DIY league. Information technology isn't.

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Steps

Footstep 1. Cut the end off of your AC adapter.  That'southward right.  Merely cutting it off.  Information technology'due south for a 10 twelvemonth old cell phone, yous're never going to use it again anyhow. Information technology's frankly kind of weird that you saved it to begin with.

Pace 2. Dissever and strip off 1″ of each wire.  You have *just* made booster cables!  Salubrious.

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TIP:

Black wire = negative     Striped or solid white wire = positive

Information technology IS VERY Of import TO Not MIX THE TWO UP.

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Step 3. Remove the screws holding the bombardment together.

For Ryobi batteries information technology's a star shaped screw caput similar this.

A few years agone I bought a kit of weird small screwdriver heads from Amazon.  I initially bought it because I needed a special tip for removing my Macbook Pro cover to replace the battery.  But I've used it for a ton of other stuff since getting this kit.

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TIP:

There's a hidden screw nether a piece of plastic.  You need to pry the plastic off to get at the screw underneath. I used a very sparse screwdriver to pry it off.

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Step four. Pull the top off of the battery case.

Step 5. Remove the 2 plastic side pieces. They're the things you printing in to remove your battery from your drill.

Step 6. Lift the battery pack out.

Step 7.Set the Multimeter to read volts.  For testing an 18 volt battery choose the xx volts setting. This will give you the most accurate reading.  (If yous don't have a multimeter skip to Footstep ix and hope for the best)

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TIP

Volts are symbolized by a "V" with i or two straight lines over it on a multimeter so it's that section of the multimeter that you lot employ.  The section under the V with the direct line(s).  Not the squiggly line.  The straight line.

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Step 8.  Touching the crimson probe to the positive (crimson) terminal and the black probe to the negative (black) terminal, read the voltage shown on the multimeter.  In my case the bombardment was conveying a charge of 0.06 volts.  Which is *nearly* nothing, simply not completely cypher.

Step 9.  Plug your Ac adapter in and using the wires, heave your expressionless bombardment.  But affect the black wire to the negative terminal (the i with the black wire going to it) and the white wire (or striped wire) to the positive terminal (the one with the ruddy wire going to information technology).  Practise this on and off for approximately a minute.

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TIP

Apparently lithium ion batteries should be "pulse" charged.  Which ways you hold your wires down for 15 seconds or so, then release them.  And then hold them down once again.  Over and over.

DOUBLE Bank check THAT YOU ARE TOUCHING POSITIVE TO POSITIVE AND NEGATIVE TO NEGATIVE.

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Pace 10. Examination your the voltage on your battery pack again.  Information technology should be higher than information technology was earlier boosting.  (Again, if you don't have a multimeter don't worry most this – you'll only have to press on without 1)

Mine went from 0.06 volts to 7.58 volts after a infinitesimal long boosting session.

Step 11. Put the plastic cover back on the battery pack (just the part that goes into the charger) and prepare your battery on the charger to see if it will accept a charge.

If yous still only get a red flashing calorie-free and the battery won't charge, boost the battery some more. I find the battery charger will recognize that the battery is good once again when you lot boost it to between x and fourteen volts.

Just keep repeating the "pulse" boosting and testing the battery until it volition finally exist recognized past the charger and you lot get the dark-green calorie-free.

To those of yous who found this subject field matter to be on par with spending 3 hours in a waiting room, sorry 'tour that.

For the rest of you lot?  I know exactly how you feel.  I felt the same style. Let me know exactly how elated you were after y'all brought your first bombardment back to life in the comments section.

Here's a 3 minute tutorial video showing me every bit I fix my own battery.

• Cut the end off of your AC adapter.  That's right.  Simply cut it off.  It'southward for a 10 year old jail cell phone, you're never going to employ information technology again anyway. Information technology's frankly kind of weird that you saved it to begin with.

• Split up and strip off 1" of each wire.  You take *just* made booster cables!  Good for you.

• Remove the screws belongings the battery together. There's a hidden screw under a piece of plastic.  Yous demand to pry the plastic off to get at the screw underneath. I used a very sparse screwdriver to pry it off.

• Pull the superlative off of the bombardment case.

• Remove the 2 plastic side pieces. They're the things you press in to remove your battery from your drill.

• Lift the battery pack out.

• Set the Multimeter to read volts.  For testing an 18 volt battery cull the 20 volts setting. This will give y'all the most authentic reading.  (If you don't have a multimeter skip to Pace 9 and hope for the best)

• Touching the ruby-red probe to the positive (red) final and the blackness probe to the negative (blackness) concluding, read the voltage shown on the multimeter.  In my instance the battery was carrying a charge of 0.06 volts.  Which is *almost* nothing, only non completely nothing.

• Plug your AC adapter in and using the wires, heave your dead battery.  But impact the black wire to the negative terminal (the one with the black wire going to it) and the white wire (or striped wire) to the positive terminal (the i with the crimson wire going to it).  Do this on and off for approximately a minute. DOUBLE Bank check THAT YOU ARE TOUCHING POSITIVE TO POSITIVE AND NEGATIVE TO NEGATIVE.

• Test your the voltage on your battery pack again.  It should be higher than information technology was before boosting. IF IT IS NOT, Then STOP. YOUR CELL COULD BE DAMAGED AND Standing COULD BE Unsafe.

• Put the plastic cover back on the battery pack (only the part that goes into the charger) and prepare your bombardment on the charger to see if information technology will have a charge. If you lot all the same but become a red flashing light and the battery won't accuse, boost the bombardment some more than. I find the battery charger will recognize that the battery is skilful over again when you boost it to between ten and xiv volts.

• Repeat the "pulse" boosting and testing the battery until information technology will finally be recognized past the charger and yous get the dark-green light.

• Reassemble your battery. Your rechargeable battery is now fixed.

1. Black wire = negative     Striped or solid white wire = positive It is very important to non mix the two up.
2. There'south a hidden spiral under a piece of plastic.  Y'all need to pry the plastic off to get at the screw underneath. I used a very thin screwdriver to pry it off.
3. Volts are symbolized past a "5" with one or 2 straight lines over it on a multimeter then it's that section of the multimeter that you lot apply.  The section nether the V with the direct line(s).  Not the squiggly line.  The straight line.
4. Lithium ion batteries demand to exist "pulse" charged.  Which means you hold your wires downward for 15 seconds or and then, then release them.  Then agree them downwards once again.  Over and over.

Please direct matrimony proposals to my publicist. A certain tool company is *not* interested in proposing spousal relationship to me.  So I'd similar to make a betoken of saying I love these tools and use them all the time. Their batteries and chargers on the other hand, could use some improvement.

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OTHER WAYS TO FIX THINGS.

• How to Unclog Your Primal Vacuum
• How to Acuminate a Push Mower
• How to Replace Carbon Brushes on Any Motor
• How to Mend a Broken Fingernail (because you're surely going to need information technology after replacing carbon brushes)

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Questions & Answers

1. Is there an easier way to practice this? Maybe.  Some people take had success with putting the battery in the charger and waiting for the red light to come on.  So you lot pulse charge the battery by quickly plugging and unplugging the charger.
2. What voltage does the charger need to be? A 12 volt charger will do the trick.
3. Isn't this dangerous? In that location is a small chance of BIG danger. And then proceed with caution. If a cell doesn't immediately charge a footling fleck with this technique, cease. If annihilation (charger, cells, wires) starts to oestrus up, Finish.
4. How long will the bombardment last later fixing them this way?Until you accidentally leave it in the charger too long again, or until the bombardment's natural death.

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*Proceed with caution and follow instructions exactly. Failing to practise and then could pb to injury.*

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Source: https://www.theartofdoingstuff.com/battery-that-wont-recharge/

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