Micro USB Poot get little or no connection

Lately the charger port for my device has been getting worse. From my research i have found the method of re-soldering the micro USB port fixes this, but i have never done this. All i want to do is be able to charge the battery. Would it be possible to hard wire a positive and negative wire directly to the battery leads and connect those to a make shift plug that i can attach to a 5.0 volt 2.2 amp power supply? would this method be suitable for charging this LiIon battery? i have no need to transfer data through the USB Cord at this point. I know its not aesthetically appealing, but that's what i want to do. i just nee to know if it will work. will it interfere with the battery stats of the device? will it reset the battery percentage if i charge this way? will it back feed power in such a way that will damage things in the device?