The Garmin Alkaline Battery Pack is a reliable power solution for Rino-series handheld GPS and communication devices. Designed to hold four standard AA cells - alkaline, NiMH, or lithium - it provides a convenient alternative to rechargeable lithium batteries, ideal for extended trips or remote fieldwork. Lightweight and compact, measuring approximately 6" × 3" × 2.4", the pack fits seamlessly into compatible devices and delivers up to 18 hours of runtime under typical usage. By using readily available AA batteries, it offers flexibility and peace of mind for hikers, hunters, and outdoor enthusiasts who need dependable power in the field.