This gives decent readings. This doesn't work so well with completely empty batteries. If you can charge the battery, the reading will be completely different (battery life). This is good for those who don't want to spend too much on a reader.
MUCAR CDL20 OBD2 Scanner - Check Engine Code Reader And Diagnostic Scan Tool For All OBD II Protocol Cars Since 1996, With O2 Sensor, EVAP System, And Smog Test Functions
23 Review
Vgate ICar Pro Bluetooth 3.0 OBD2 Code Reader | Scan Tool For Torque Android To Check Engine Light & Car Faults
19 Review
Upgrade Your Car Diagnostics With 16 Pin OBD2 Extension Cable Splitter - Male To Dual Female Y Cable - 50CM
17 Review
eTORK 3/8-Inch Drive "Click Style" Electronic Torque Wrench: Precise Torque Control (25-250 In. lbs., 2-20 ft.-lb.)
12 Review