Can I mix old and new batteries together or different types of batteries in devices?
Don’t mix old and new batteries. If you do, more power will be drawn from the new battery and shorten its life. This is the case regardless of battery chemistry type. Don’t mix battery power systems such as alkaline with general-purpose batteries in the same device. This will reduce the service life of the batteries. Don’t mix brands of batteries in a device. Use only one brand in a device. Each manufacturer’s product works a little differently from others. Using one brand of batteries will assure you the maximum usage from that set of batteries.
