Product description: Brand: SHARPSTAR Type: AA/ AAA Voltage: 1.5V Open Circuit Voltage: 1.5V / 0 to 0.22 Operating Temperature: -10°C ~ +50°C Weight: 18g Dimension:- AA: 1.3cm x 4.9cm AAA: 1cm x 4.3mm 1 Pack = 4pcs 5 Pack = 20pcs 10 Pack = 40pcs Benefits: - Durable use - Strong power - Consistent quality - Non-mercury - Security-non leakage Suitable for: -Low power electric appliances -Battery-Operated Toys, Remote Control, Clocks, Calculator, Mouse, and Other Electronic Devices. Important Notice: No exchange or return of product if only due to dented box issues. We will check and make sure all of our products were in good condition before sending them out. So any of the dented box issues was caused during the shipping process. If you have any product quality issues, you can drop a message to our customer service, they will help you to solve the problem.