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Cannot recharge 18v battery, place battery in charger red light flashes slowly then after a minute flashes fast and won't continue to charge, remove then replace and again slow red flash for a minute and same thing happens, is it the battery or charger. Thank you John Moore.
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The Ryobi charger will flash green as it charges and then remain steady or slowly flashing green when fully charged. Flashing red means testing and if it remains steady or slowly flashing red it is defective.
Either the charging adapter is faulty or the battery is worn out.
If the recharageable battery is more than 3 - 4 years old then the battery could be worn out.Rechargeable batteries have a finite number of charge and discharge cycles andwill lose their charge capacity over time, i.e. won't charge to 100% andgradually the charge reduces until the battery won't charge up at all. OR Thebattery shows a 100% charge but when the adapter is disconnected the batterydrops off to zero capacity in a very short time. If the battery drops to anunacceptable charge level then the battery needs to be replaced.
Batteries don't always look degraded but if they've been in use for a while or have a bad cell, they will show up bad on the charger and it won't charge them. The only way to test the batteries is to try to charge them on another charger. If the batteries show defective on another charger, they are bad and you'll have to replace them. Also try to charge some batteries you know to be good on your charger to see if it's the problem. If your batteries charge on another charger, your current charger is bad and they don't have any replaceable parts in them so you'd be looking at replacing it.
Rechargeable batteries do have a lifespan, they won't recharge forever. If you have fully discharged the batteries then fully recharged them and they still don't have full power or they only last a couple minutes then they are done. If they won't charge or the charger shows them as defective, the only fix is to replace them.
I have just had a similar issue I left the drill unused for a period and when i placed it in the charger the charger showed the battery as charged after about 15 secondseconds.
Following a internet search i found a site that suggested for a imlar problem with a camera jump starting the low battery with a 9 v battery. I had a spare from the drill which was fully charged so placed a contact from + to + and - to - and held for about 2 mins. I then placed the battery back in the charger and it started charging. Running the battery down as we speak to recharge again well worth a try. If you dont have a spare maybe the 9 v would work
I think the battery was already damaged,a rechargeable battery once you use it,it needs to recharge again so that the battery memory will stay longer.use a new one,regards....
The yellow light means that there still is an amount of charge on the battery, meaning that it isn't fully discharged. The red light means that it is partly discharged and you can charge it up.
Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,
Sometimes the charger needs to be reset! there is a procedure for tricking the charger into giving the battery a forced charge. Sometimes this will shock the cells back to life. It is a temporary fix! the thermistor inside of the battery may also be bad. Goto Http://www.Batterypartsonline.com the have the thermistors and any other parts you might need!
yes thank you, problem solved.
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