Battery is brand new and provides backup as good as original battery with the mobile phone. This battery is the best alternative for your great phone and will never explode or give any problems.This battery has been designed specifically for your handset and is ideal as a second battery or replacement for your original battery. Simply charge one while the other is in use and you'll be able to use your Smartphone all day every day! This product provides outstanding talk and standby times. These batteries deliver the long-lasting and reliable performance you deserve.We ask you to use an original company charger to charge your mobile and our battery any other than original charger can affect your battery and mobile drastically.