Capacitor smoothing question

Author	Message
Bleep Guru Joined: 09/01/2022 Location: United Kingdom Posts: 798	Posted: 03:13pm 10 Mar 2025       I use one of these less than £10 on Ebay it'll give you A, W, Ahr, Whr, voltage, if you are measuring a low voltage, like a single lithium, it has a 3pin connection on the side to power it, otherwise it will power itself from whatever you are measuring, you still need a load and to keep an eye on it to prevent over discharge, but otherwise it works great. I just use a relatively powerful LED torch as a load. Remember the faster you discharge the lower the capacity, the usual standard is to arrange a discharge over about 10 or 20 hrs 10c or 20c, but otherwise as long as you don't discharge too fast say a few hours, it'll give you a good idea. I primarily use it to test old laptop cells. Regards Kevin Edited 2025-03-11 01:18 by Bleep