In some situations like a remote, the rechargeable battery can cost
more to operate. The shelf life on an alkaline battery is years. The
shelf life on the CHARGE of a rechargeable can be as little as 30
days. The draw on the remote is negligible so a set can last for
years. Meanwhile, you may end up changing and charging those nicads
dozens of times plus the inconvenience involved. A good alkaline is
4/$1 at Dollar Tree. I save rechargeables for high intensity
situations like cameras and power equipment.
Yes, a VOM can help diagnose and save money. Even so, common sense is
way better. Using both is priceless.