hey all im in canada so i have one of these:https://www.canadiantire.ca/en/pdp/...rger-with-80a-engine-start-0111979p.html
it can also test the alternator so i decided to do it today. i first used my voltmeter/multimeter set to 20vdc directly to the battery and when the truck was on and running it was at 14.2-14.3ish when idling. my vehicle is a 2003 hummer h2 and inside the gauge has a voltage reading too and 14v is the middle and the arrow is always pointing a little less then 14v at all time, even when im driving sometimes it moves a little bit but its never above 14v. so i decided to use my alternator tester function.
the instructions say:
Start the vehicle, rev the engine at 2000
rpm for 30 seconds and turn on the vehicle’sheadlights or other accessories.
4. Set the Display mode button to Alternator %.
5. If the display gives a numeric percentage, the alternator is working properly. The percentage will be proportional to the voltage between 13.2 V and 14.6 V. If the display reads HI or LO, refer to your vehicle’s manual or have the electrical system checked.
so when i used it i had my phone camera at record and at idle it was showing 52% ish and then when at 2000 rpm it reached 65%.
so basically does this mean my alternator is fine but just working at 65% of max voltage? i am wondering and asking because i am installing a 55w HID kit very soon and dont want the alternator to give out or something.
attached is a pic of the unit thx