Item features: Type: Battery tester Voltage measuring range: 12V Accuracy of voltage measurement: 0.1V Resistance measuring range: 10 m Ohm Accuracy of internal resistance measurement: 0.1 m Ohm Supply voltage: 1.5 - 9V Size: 11.00 x 6.00 x 2.50 cm (approx. 4.33 x 2.36 x 0.98 in.) Features: BT-168D universal digital LCD AA / AAA 9V / 1.5V button cell CD battery volt tester. 100% brand new and high quality Test standard and rechargeable batteries: 9V, AA, AAA, etc. No batteries are required for operation after the battery is docked with the positive and negative terminals. Then guide the pointer to jump to the appropriate range Handy little tool: A battery tester is a tool we use in everyday life to check whether the battery is good, weak or needs to be replaced. A must-have for anyone who regularly uses regular or rechargeable batteries. Small and practical: Simple but effective battery tester, compact and lightweight, easy to carry. Easy to use: Check if the battery touches both contacts of this tester, then you can read the digit via the LCD. No battery required: The battery tester is activated by the battery being tested, so no batteries are required to operate. Test the battery life anytime, anywhere. Applicable universal: The battery tester applies to 1.5V and 9V battery types and button cell batteries. e.gAA, AAA, C, D, 9V. Wide range of applications With a battery tester, you can quickly get clarity on the current charge status of rechargeable batteries and batteries. Scope of delivery: 1*Battery tester Notes: 1. please allow 1-10mm difference due to manual measurement. 2. due to the difference of light and screen, the colour of the item may be slightly different.