How old is the battery? Even rechargeable batteries have a life span.
Here is a [http://www.ebay.co.uk/bhp/samsung-c3300-battery|link] to some suppliers of the battery. It is not a recommendation to use them it is shown to give an indication of the price. They are not that expensive.
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=== Update (03/23/2017) ===
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Hi,
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You could always try [https://www.androidpit.com/how-to-calibrate-the-battery-on-your-android-device|calibrating the battery] and see if this resolves the problem for you.
Hi,
Your battery may be failing.
How old is the battery? Even rechargeable batteries have a life span.
Here is a [http://www.ebay.co.uk/bhp/samsung-c3300-battery|link] to some suppliers of the battery. It is not a recommendation to use them it is shown to give an indication of the price. They are not that expensive.