In an effort to stop the sound drop-out of my Lionel steam engines, I installed twenty-six YLB Batteries in the first third of my steam engines. The engines are running perfectly now over switches that in the past would interrupt the sound.
The YLB 10500 with posts for a Battery Clip and the YKB 10510 with a plug for the socket on the sound board, work very well on my Atlas O switches.
Sincerely, John Rowlen