"<iframe width=560 height=315 src=https://www.youtube.com/embed/SO644t2-mFo frameborder=0 allow=autoplay

For 12V Batteries & Charging SystemPocket Tester - Fast And Easy to UseOperating RangeBattery Voltage:25%, 9.8-12V50%, 12.0V-12.4V75%, 12.4V-12.6V100%, 12.6V-13.8VCharging Voltage:Good, 13.8V - 14.7VBad, 14.7V - upDimensions: L 108mm, W 36mm, H 13mm