If the battery is over 3 years old and is underperforming, it likely needs replacing.
A Ryobi battery will typically go bad when it simply has exceeded its number of effective charges, has 1 or more cells that have an internal short, or has simply fallen below the minimum charging threshold for the charger.
Batteries have a limited lifespan and can eventually lose their ability to hold a charge. If your battery is several years old (3+ years) and has been charged and discharged numerous times, it may need to be replaced.
Best simple test is to put it into a constant load tool like a blower or vacuum and do a runtime test vs a new battery.
The charger itself will not hurt the battery, unless you are talking pre-lithium batteries, which yours are not. It will just go into maintenance mode. Sitting fully charged with no use will damage the battery, as will the extreme temperatures found in many garages and sheds.
Charge your battery to at least 50%. Store your battery in a cool, dry place no warmer than 38℃.
Why is it important to storage charge lithium batteries? Storage charging is charging your lithium battery to 60% voltage so you can leave it on the shelf for an extended period. Leaving your lithium batteries fully discharged or fully charged will cause the cells to deteriorate and get out of balance.
Make sure it's clean and free from any dirt or debris. Clean with a dry cloth if visible. Over time, rechargeable batteries degrade, resulting in reduced runtime. If the battery is over 3 years old and is underperforming, it likely needs replacing.
Red and green lights both flashing
Either the battery pack or charger is defective.
Batteries are warranted for three years. HOW TO GET SERVICE: Just return the power tool, properly packaged and postage prepaid, to an Authorized Service Center.
Sometimes, a hard reset can resolve charging issues with lithium-ion batteries. This involves turning off the device, removing the battery (if possible), and holding the power button for 15-20 seconds. Reinsert the battery (if applicable) and attempt to charge the device again.
Replacement Batteries and Chargers:
To replace a battery that is still under warranty, please contact our customer service at 1-800-268-4015. To expedite the process please have the battery in question as well as a compatible tool and charger.
The only thing you can do, and only if you have the type of car battery car battery where you can take the top caps off, is to check the level of water in each cavity and if any are low fill them up with some distilled water and try to trickle charge it over night. If this doesn't help, its just time for a new battery.
So long as it fails within 30 days due to an error on Ryobi's part, The Home Depot should help with a replacement for your broken battery. While the retailer covers battery-operated tools and products for 30 days, Ryobi has its own warranty and policies when it comes to replacing batteries.
Replacement Batteries and Chargers
To replace a battery that is still under warranty, please contact our customer service through the Chat or reach us at 800-525-2579.
Where to leave your battery. Of course, it is completely fine to leave a Ryobi battery on its charger while it's being charged. Otherwise, how could it ever be reused once it's drained? However, you do still want to take it off the charger once it's done because it can run down the charge faster than if it were removed ...
Check the end of your Ryobi 4V battery — if it has a button, then all you need to do is press it. The LED that is integrated into the battery will then either light up red, orange, or green. If the light is green, it's fully charged or near fully charged, and if it's red, the battery is almost dead.
If the charger is warm to the touch, the charger is moving current to the unit, then the battery would need to be replaced, but if the charger temperature hasn't changed, the charger would need to be replaced.
Lithium-ion batteries, like those used in Ryobi 40V tools, are designed to be charged and discharged repeatedly, with built-in circuitry to prevent overcharging and overheating.
About 1year. The battery want. Contractor's Assistant: Do you know the model of your Ryobi appliance?
One frequent lithium-ion battery problem is rapid discharge. If you notice your device's battery draining faster than usual, it might be due to a defective battery or an energy-hungry app. Another issue is the failure to charge. This could be due to a faulty charger, a damaged charging port, or the battery itself.
Avoid High Temperatures
Heat can cause stress to rechargeable batteries, especially temperatures above 90 degrees. This is due to their internal chemistry, which doesn't mix well with extreme heat. In many cases, the solution is simple: just make sure you don't leave electronics in the car or in direct sunlight.
According to this guideline, you should begin charging your iPhone as soon as its battery reaches 20% and end it when it reaches 80%. This method is said to lessen the strain on the battery, increasing its lifespan and preserving its condition over time.
Avoid temperature extremes, both high and low, when using or storing lithium-ion batteries. Elevated temperatures can accelerate degradation of almost every battery component and can lead to significant safety risks, including fire or explosion. If a laptop or cellphone is noticeably hot while it's charging, unplug it.
It is generally safe to leave a lithium-ion battery on the charger overnight, as they are designed to be left plugged in. However, power banks may overheat if not stored in a cool, dry place while charging. Thus, it is best to unplug and store in a safe location when not in use.