A few years ago I purchased a Canon 40D and only got to use it a few times (with the battery pack fitted so 1 x canon battery, 1 x after market battery) before I broke my back and haven't touched the camera for just over 2 years. Now when I try to charge the batteries i encounter the following problems:
1. BP-511A Canon battery: charges normally and when i get the constant led on the charger to say that it is fully charged I remove it and put it into the camera with the battery pack with the other battery and in single battery formation and nothing happens. the camera won't turn on.
2. BP-511 Aftermarket battery: It appears to charge normally for about half an hour and the led just goes out. It never seems to stay on for any longer than that and never get's past the first sequence of led flashes to say that it has started charging.
Does this mean that both of my batteries are now dead and useless? I'll be super pissed off if they are. I expected some loss in battery charge but i never expected this problem.
FWIW, I hadn't used my Canon 350D for even longer and when I charge it's batteries up they work perfectly.
Any assistance or advice would be greatly appreciated.