It was described perfectly but my question is going to be related with what is the max capacity as MAH for the battery of my MSP4 to make the battery life last longer and stronger. I mean is it possible to make it bigger which will be helping us that we will be using it for more hours than before. If it is possible or if there is any other option to do it please just let me know. I do love my MSP4 and I just wanna use it more without the charger I will be able to use it more than 2 -3 hours for each time I turn it on. Even giving me more suggestions will be appropriate for making a new solution for my problem.