Dlyfull DB1 Small Universal Battery Tester and B3 Universal Battery Tester, 2X AAA Batteries Included, Cable Included

DB1-HIGH COMPATIBILITY: Universal battery tester for 1.2V Ni-MH/CD, 1.5V Alkaline, 3.0V Lithium, 3.7V Li-ion, 9.0V; Supports AAA AA C SC D N sizes, button cells, CR123A, CR2032, LR44, 18650 and more, offering versatile compatibility for various applications
DB1-SMART LCD DISPLAY: The precise digital battery tester shows what you need to know about your battery voltage and health, accurately indicating whether the voltage is good, weak, or poor
DB1-ONE-TOUCH, EASY TO USE: Press the V-SELECT button briefly to power on and cycle through battery types. Quickly double press to turn the buzzer on/off. Long press to power off
DB1-MAGNETIC BATTERY SLOT: Simply place the battery into the battery checker tester and slide the magnetic slider to secure it firmly. No worries about slipping, easily test with one hand
DB1-COMPACT & LONG BATTERY LIFE: Rechargeable household battery tester with USB-C input. Full charge lasts up to 15 hours, no need for frequent Power supply battery changes. Portable and easy to store

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