Hi. Welcome to justanswer.
How old is your camera?
Most probably the battery has run out. Usually the life of the batterries is about 2 years (also depends on how frequently you charge). The only thing that can really damage them is overheating or leaving the battery in a discharged condition for longer time.
You will need to replace the battery. It is cheaply available. If you want I can provide you the links to buy.
Click Here to buy
Is there anything else I can help you with?
There are some more links.
CLICK HERE TO BUY FROM AMAZON
CLICK HERE TO BUY (2nd option)
This one is from panasonic. I would recommend you to buy this one. CLICK HERE TO BUY
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Are you facing any difficulty in ordering the replacement battery?
Reply if you have any query and I will guide you through.
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You have already rated me 5 stars. Thanks and I am glad that I could help you out.