blackberry bold 9900 battery problem?

[Ryuk]

i bought my bold 9900 4 months ago and now i have a problem and i have no idea what caused it anyway i use it normally and it drains normally until i reach 60-50% it drains to 1% in 1 minute :/ !
any solutions please ? and please dont tell me to buy an iphone -_- ! i love BBM <3

 

[DavidB]

Your battery has developed memory. So you need to total drain the battery. Even turning it on when it says there is zero power to make sure it is totally dead. Then keep the un it off and charge it full and repeat the process. On the 4th cycle of this if the battery is not damaged, it will perform better

 

[Jerale]

I don't have an answer cuz I basically agree with the above answer but I want to ask you have you ever heard of the BlackBerry Z10 and Q10? Both have BBM with video chatting and screen share. Look into it.