This battery is the extended life battery for Samsung A970 - it doesn't say so on the product's page but this is the fatter battery that does not fit perfectly on the charger. You can hold it on with a rubber band without much hassle, and if you have the original charger you can disconnect the battery from the phone and side it in the back charger, but that's kind of a pain.It lasts a long time, and actually with the slightly bulkier A970, it kind of fills it out a little, and balances it while the screen is out.