• It is a multifunctional circuit tester, which can help find and determine whether the battery is damaged, the electrical appliances work abnormally, and the car cannot be started
• HIGH PRECISION TEST PROBE : The curved receiving probe can better detect cables in crowded and narrow environments and improve the detection efficiency. Adjustable sensitivity helps to achieve more accurate detection results.
• Featured Design: Fashion Strong compact light weight case to keep all kind of tester tools, charger cord well organized and protected;
• Assured Protection: Semi-hard carrying case protecting the device from shock, shake, scratch

How to use the pile head current test clamp: 

• Loosen the battery negative nut, plug the pile head current clamp into the ammeter, clamp the pile head current test clamp on the battery negative pole, and remove the battery negative clamp to test the leakage current.
• How to use the OBD2 flow test clip: plug the OBD2 current measurement clip into the ammeter, the OBD2 point flow test clip, connect to the diagnostic socket on the car, the OBD2 point flow clamp connect the extra battery, and finally remove the negative electrode of the car battery That's it.
• Next, as long as you pull out the fuses in the car in order, when the problematic fuse is pulled out, the current value will drop significantly, and you can find out where the current is leaking by querying the car parts corresponding to the fuse.

Use note:

• Before measuring the leakage, please turn off the engine and remove the key. Do not start the engine during the measurement to avoid burning the fuse.
• Leakage measurement must simulate the non-starting state of the car. Please close the door and remove the key to make the car computer enter the dormant standby state.
• Different car models have different time when the computer enters the standby mode. Please wait patiently during the measurement to determine whether there is leakage current.
• The computer standby current of different car models is different, but the ideal value should fall between 60mA~20mA (0.06A~0.02A).
• To replace the fuse of the ammeter, a 20A fuse must be used to avoid burning the ammeter when the current is exceeded.