Dlyfull DB1 Small Universal Battery Tester and B4 Universal Battery Tester, 2X AAA Batteries Included, Cable Included

Dlyfull DB1 Small Universal Battery Tester and B4 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