Endless talking about the 9V capacity and how long the battery holds. I take my multimeter and put 9V battery just on one contact while the other one was connected to mA meter. I really like my Yamaha RBX375 but I wasnt happy with the result. The power drain was 3.81 mA, while on the Ibanez SR505 was just 0.77 mA !!! On the Ibanez SR305 consumption was 0.80 mA. Both the Ibanezes were measured in the shop. Its not about that I dont have money for the batteries but its more about old and new electronics in "new" guitars.