I put the battery on the charger, blinks red all the time, never turns green and accepts a charge?? this product is less than 4 mos old.

Sounds like old exhausted batteries to me.

My Ryobi 18V One+ charger blinks green while it's charging. When the battery is fully charged, the LED goes to a solid green. However, one battery recently had a faulty cell. After several hours on the charger, the green and red LEDs both were blinking. That indicated that the battery failed late in the charging sequence. It didn't fail the initial testing by the charger. The other battery I charged that day charged fine.

The extended capacity batteries can take 12 hours to charge in my experience. The regular batteries take less time. The charge time will depend on the battery chemistry(The older NiCd batteries take longer to charge then the Lithium batteries.)

I hope this helps. Assuming you aren't dealing with a cold or hot battery or charging environment, if you have any suspicion about a faulty battery, replace it.

Cindy Wells
(Note: I have a 12V drill as well. Those batteries takes longer to charge for the same relative capacity than the 18V NiCd batteries.)

I had the same problem with flashing red lights. Both sides on a four battery charger. I swapped the batteries to another charger and the batteries were fine. They charged normally. I put some different batteries in the charger and the same flashing light situation. Those batteries also charged normally in a different charger. I looked closely at the back of the charger and, low and behold, "made in China". Why does that not surprise me. The bottom line, it may not be a battery issue.

sound to me like you have a bad battery, a lot of ryobi batterys don't last like they should i have had the same problem, but my battery was less than a year old and i took it back and they give me a new one.

This maybe a solution. I had the same issue just now. Pulled battery, put back in, placed on dock, and still blinking red. So I removed the camera from the dock, pulled battery, put same old battery back in, placed on the dock and turned the mode switch on right away before it started blinkin red. It seems to be charging now with one bar and has not gone blinking red for 15 minutes.

I was outside with the camera in 10 degree weather taking pics of my dogs but had been inside for 20 minutes before placing it on the doc. I think something may have happened with the charging circuit and turning it on right away with it on the doc may have reset the charging. Try it. Hope it works for you.

There are 4 reasons why your unit is behaving this way:
1. Charger is the problem.
2. The docking station is the broken.
3. The battery is broken or not accepting charge.
4. The actual unit is the problem.
It is very hard to tell which one is causing this to happen.
Let us do some troubleshooting first:
1. Plug your charger in an A/C outlet and make sure the red power light (left) is lit, otherwise the charger or the docking station is broken.
2. You can test the charger with a multimeter. Unplug the charger from the docking station and measure the voltage across the outside and inside, it should register more than 5 volts DC. If there is a 5Volt DC the docking station is the problem otherwise the charger is broken.
3. If the red power light is lit and the status light (right) is lit too, your docking station is broken.
4. If the red power light is lit, dock the unit into the charger, the status light (left) should turn red when your battery is accepting charge or turn blue when your battery is fully charged.
5. If the status light will not lit at all (while the red power light is on), tap the screen while the unit is docked on the charger. If the unit will become alive, you need a new battery otherwise you need a new unit.

12 hours is very long time to charge, the status light should turn to blue in less than 2 hours especially for a new battery.

the steady red light showing when in charger shows that
it is charging. the blinking red light when taken out of
charger or turned on and off means it is not fully charged.
leave it in charger till red light turns green.

go for the new charger. Keep the battery, always good to have a couple of batteries[I have 3 lions and when I was using AA's I had 6 sets of 4.

Well. Ive got the same problem only ive gone thru 3 batteries trying to figure out what the problem is. When i plug it in to charge the light turns red , then within 5 sec's turns green. It stays green but never charges the battery. After 24 hours, its still a dead battery. Im just assuming since its 5 years old that the internal charger is shot. Looking for a new camera at this time.