Manufacturer DLYFULL. What is Included: 1x Dlyfull Universal Battery Checker; 1x AAA battery(pre-installed); 1x User Manual. Included components battery tester. HIGH COMPATIBILITY: It is not only suitable for AA, AAA, C, CR123A, D, 9V, N, CR2, CRV3, 2CR5, CR-P2 cylindrical battery testing, but also good for checking a wide variety of button cell batteries.
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