Compact and lightweight for portable use. Wide testing range including Cbattery, AA, DN, 9V (6F22) batteries and 1.5V button cells. A battery tester that measures battery status to help avoid waste and unnecessary replacements. Note: Store the tester in a dry place at room temperature to prevent damage from temperature and humidity. Why you need it Quickly check battery health to decide reuse or replacement, saving time and money. Help reduce waste by identifying which batteries are still good and which should be discarded. Simple and reliable tool for everyday battery maintenance at home, in the office, or on the go. What makes it stand out Broad compatibility with common battery sizes (C, AA, DN, 9V 6F22, and 1.5V button cells). Compact, portable design that fits easily in a drawer, bag, or toolkit. Straightforward operation focused on accurate readings and practical results. Usage scenarios Home or office: test used or stored batteries to determine if they can still power devices before replacing them. Electronics hobbyist or workshop: verify battery readiness before powering projects or gadgets. Travel, camping, or emergency kit: inspect spare batteries to ensure they are usable when needed. Key attributes Function: measures battery status to guide reuse or replacement. Compatibility: supports C, AA, DN, 9V (6F22), and 1.5V button cells. Size and portability: compact and lightweight for easy transport. Performance: designed to provide reliable readings to support responsible battery use.