Replacement battery for Nokia 5310 / 6600 / 7310. This product is brand new and 'Phood' branded. Li-Ion 860 mAh For more information on 'Phood' branded products, click here. Important Fitting Information: We are unable to provide fitting instructions for this replacement part. Do not attempt to fit this if you are unsure on how to do so, as incorrect fitting can seriously damage your handset and render the warranty invalid. If in doubt refer to your handset manufacturer's service centre. We can not be held responsible for any damage caused to your handset as a result of poor or improper fitting of replacement parts.