my bold 1 bb is discharging,anytime i plug in the charger,it will the shw the charging icon in the battery bt will not charge.if i decide to use a desktop charger,it will charge bt wen i insert bck into my bb,it wnt last more dan 1 hr, wat kan i do pls cos im tired

Is the phone brand new or you bought it secondhand? how long has the phone been used?

My nokia once did that too , discharges while plugged in until the battery becomes totally without charge (had to boost it back to life)
I don't think its something your average street corner phone engineer can fix

Have you tried another battery, considering that it is a bold 1, lithium batteries are not meant to last forever. After years of use they begin to lose potency, and would not hold a charge has they are meant to. Battery yen, fe rebi agban re !!!!!!