very helpful, the information in these manuels are very detailed
Text excerpt from page 8 (click to view)
AV-20920 â¢ AV-20921
C-13910 â¢ C-13911 C-20910
CHANGING THE BATTERIES
Be sure to use only size AA batteries.
1 2 3
Push down or raise the latch on the remote's back cover to remove it. Insert the two supplied AA batteries, carefully noting the â+â and âââ markings on the batteries and remote control. To avoid a short circuit, insert âââ end ï¬rst. Snap the cover back into place.
Ã If the remote control acts erratically, replace the batteries. Typical battery life is usually about six months to one year. Ã We recommend alkaline batteries for a longer battery life. RM-C754/RM-C751 USERS NOTE: When you change the batteries, try to complete the task within three minutes. If it takes longer than 3 minutes, the remote control codes for your VCR and/or Cable box will have to be reset (page 10).