The battery for my camera does not charge when I put it in the charger. I have had the camera and charger for about a year without any problems until now. When I put the battery in the charger, the green light stays on and does not become yellow. I know that my battery needs to be charged because when I turn on my camera, it dies. Do I need a new charger? Or is my camera or battery not working?

funny thing with batteries is that they can get a memory = sounds stupid yes = if a battery is recharged when it has half charge and then fully charged it remembers the point , one it gains memory it wont charge past the last point = or the battery life is over = or the charger is faulty.

if the battery is older, 3 or 4 years, then get a replacement. The battery may be worn out.

The charge adapter may be faulty.
OR
If therecharageable 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.

put the battery in
plug the charger in
wait for it to charge
if it doesn't charge get a new battery
if the charger light doesn't work it may need servicing
that's a start

Thank you for such a detailed description, wishing others would take your lead. To the problem camera designated batteries (other then AA rechargeable) have always been a bit of a sore spot for me because the user is compelled to purchase a specific battery. As much as I prefer the name brand accessories for the camera there come a point where you just gotta venture forth with third party accessories. There is nothing wrong with using an "off" brand in fact what I've found is that is some cases they are a better battery. Again back to the problem. I grasping thoughts on how to word this but, here goes. As much as the manufactures would like you to believe that these batteries do not form a memory they do. Also the battery can trick you into thinking it's fully charged when in fact even though the charge light is saying completed it's only got about 1/3 charge. I've worked with Canon's BP 511 and now the "new" BP 511A for many years The BP511A or equivalent is the better battery. What needs to be done is to drain those batteries down until they stop, let it cool don't take it from the camera to the charger. Time the battery when you put it on the charger, meaning not to the second but what you would "normally" do is plug the battery into the charger and leave it right. Well what's possibly happening is that within ten minute the ready light is coming on, (something stupid going on in the battery) So check the battery stat of charge after say 15 minutes and if it says it ready (drum roll please) remove the battery unplug the charger for a few seconds and place the battery charger back onto the wall outlet and plug the battery back into the charger and look at your watch again. I've had to do this as much as three times until the thing would get the idea it was to take a charge "normally" about 2 hours will bring it back up. There is no device I've found to completely drain one of these batteries so over a period of time in your case one year the batteries begin this fit. I've since replaced the BP511 for the better BP511A's or equivalent. I'm not pointing a finger because myself and staff do the same thing and pull the battery before going to a shoot if it's showing partial discharge and the thing gets put onto charge and we start this cycle all over again. Be careful of the charger as well meaning don't just disconnect the battery and put it back on charge when it's going the cycle thing disconnect the charger from its power source as well because it holds a memory for a few seconds and will just shut off in a few moments if you don't.

Long story but I've been doing this now for 9 years since the dawn of Canon's 30D Cheers

yes your battery are finish they can not hold the charge put new one on charge for 12 hrs not less
if there not fully charge it is your battery charger
defective....

hope that will help
Regards Alan

Some Panasonic cameras only work with Panasonic batteries...part of Panasonic's plan to dominate the world! Is your replacement battery an off-brand?

I had this problem a few weeks ago (i.e. flashing red LED). All I did was remove the power plug from the charging unit, turned it around 180 degrees, then plugged it back into the charging unit. Red LED came on steady & the battery (which is the one that came with the camera) recharged as normal.

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.

Sounds like your battery isn't taking a charge so I would say your battery is the problem