I have a charging problem with a suzuki intruder 1500 motorcycle?

have to charge the battery on this bike every two or three days. new battery and shop tells me the charging system is ok. is there an easy solution, coz Im fed up of the inconvenience. what should I be checking, and how, and can the charging system be upgraded

charge it for a day or two and you'll be fine.

sounds like a short in the system could be the ignition bad ,alt could have a bad diode in it ,and causes the battery to drain.is it after 3 days of riding or sitting .if its after riding id have someone else check the charging .also check the battery water level .even thou its new it might be low.