Battery capacity tester BT168D: Put the battery directly Display the remaining battery capacity, more intuitive than the BT168.A one-time rechargeable battery with a voltage of 1.5 V, including: 5 (AA), 7 (AAA), 1 (D or larger), 2 (C or 2), series button batteries, etc.The voltage is 9 V disposable battery and rechargeable battery.Universal button battery tester AA AAA C D 9V't throw which batteries are thrown by guessing which batteries to keep.Place the battery between the two points of the battery tester.An easy-to-read display will tell you if you have a fool.Or can you extend the battery life for a few more minutes.Check the power of all 1.5V and 9V batteries1.5V:AAA for HP16, MN2400, R03AA, HP7, MN1500, UM3C, HP11, MN1400, SP11, LR14, UM2D, HP2, MN1300, SP2, R20, UM19V: PP3, MN1604, 6F22, 006Pnote:The battery tester is activated by checking the battery. Reduce test time as much as possible to avoid unnecessary battery drain.Item size: 110 x 59 x 25mmNote: AAA batteries are not includedColour:black+redMaterial:ABSPackage Contents:1 x BT-168D Battery TesterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.