|I'd say that you need to replace your battery. |
It's difficult to be more specific as you don't say whether you are talking about a mobile, phone, a power drill, or a laptop computer. You posted in "General Hardware/Input Devices", so perhaps it's a mouse or a keyboard, or just some rechargeable batteries. A manufacturer and model would help.
But, in the end, if it says "Replace your battery" that seems fairly clear.