{"id":7439,"date":"2023-04-28T09:57:44","date_gmt":"2023-04-27T23:57:44","guid":{"rendered":"https:\/\/batterytools.net\/?p=7439"},"modified":"2023-05-25T11:43:49","modified_gmt":"2023-05-25T01:43:49","slug":"ways-to-fix-a-ryobi-18v-battery-that-wont-charge","status":"publish","type":"post","link":"https:\/\/batterytools.net\/ways-to-fix-a-ryobi-18v-battery-that-wont-charge\/","title":{"rendered":"Ways to Fix a Ryobi 18V Battery That Won’t Charge"},"content":{"rendered":"
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The Ryobi 18V battery is a powerful option for people who are looking for a cordless power tool. But what happens when your Ryobi battery says fully charged but wont work?<\/p>\n

Troubleshooting a Ryobi 18V battery that won\u2019t charge can be tricky but in this blog post, you will learn how to fix these problems so that your tools are always powered up and ready to go!<\/p>\n

How To Fix A Ryobi Battery That Won’t Charge<\/h2>\n

If your Ryobi 18v battery not charging, you may have charger problems that need to be fixed or you may need to make sure your charger is working correctly.<\/p>\n

To figure out how your Ryobi 18v battery won’t charge or has lost its ability to hold a charge, you will need to perform some tests with the help of your Ryobi tools and an alternate power supply.<\/p>\n

One of the common reasons why a Ryobi 18V battery won\u2019t charge could be because it has gone into what’s known as “sleep mode.” Sleep mode occurs when one or more cells in the batteries are depleted past their critical point which can result in low-performing equipment since there isn’t enough juice running.<\/p>\n

The charger is smart enough to know when it’s dealing with a faulty battery and won’t risk charging<\/a> the device. The red flashing lights mean that you have an issue in this case.<\/p>\n

Ryobi 18v battery charger problems: Causes of cell failing in a Battery pack<\/h2>\n

A battery pack is made up of many cells. When a cell fails, the entire battery pack will fail as well.<\/p>\n

When the battery pack is out of balance with cells and unevenness occur, it can lead to cell failure. This happens when the battery is completely depleted and the cells will continue to lose power faster than they\u2019re being recharged.<\/p>\n

There are a few reasons why an individual cell might fail, which can cause the Ryobi battery<\/a> won’t charge. It could be that the cell no longer holds a charge or even accept one. They also may discharge at a different rate (that is noticeable particularly to old battery packs).<\/p>\n

Fix even just one cell<\/h2>\n

Open the battery pack to charge<\/a> a single cell and check each voltage.<\/p>\n

You need to open up a battery pack to charge a single cell. You can now check each cell’s voltage and if it is too low, you can charge the cells with a bench power supply. The goal is for all cells to be within 0.1V of each other when they are charged.<\/p>\n

After you charge all the cells put the battery pack back together and try to charge again.<\/p>\n

In extreme cases of over-discharge, it\u2019s suggested to use a healthy 18V battery pack to \u201cjump-start\u201d and get its charging circuit back online.<\/p>\n

Battery check – is a must!<\/h2>\n

Ryobi<\/a> 18V batteries are great because they use a series of smaller cells to power the battery. There’s a chance that if one of them is bad, then the entire battery stack can become useless.<\/p>\n

Checking individual cells using a multimeter: While it’s charging (for at least an hour), measure the voltage with a multimeter connected to the terminals of the battery. If it is below your battery rating as shown on the side, you need to replace the batteries<\/a>.<\/p>\n

A lot of batteries have a good voltage but then the voltage goes down when you use them. If your fully charged battery only powers your tools for a short while, you might have a bad battery<\/a>.<\/p>\n

Possibilities of loosed connections<\/h2>\n