Invention of the day:  The battery tester with ZIF socket - Page 1
Forum section: electronics / general

author: RoGeorge
author_rank: Super Contributor
timestamp: October 13, 2024, 09:45:50 am
content: Tadaaamm!!! Proudly announcing today the mirabulous invention of the battery tester with ZIF socket!!!Use a thick paperclip for its extra springiness. Optionally anchor it on a plank for single hand testing.The incandescent light bulb is marked 2.2V/0.25A. Between 1V to 1.5V it draws from 170 to 200mA.

author: madires
author_rank: Super Contributor
timestamp: October 13, 2024, 10:03:56 am
content: Tomorrow AliExpress will be full of copies.

author: RoGeorge
author_rank: Super Contributor
timestamp: October 13, 2024, 03:29:15 pm
content: For the curious, the filament of the light bulb turns incandescent starting from only 0.5V, as a barely visible red dot. For charged batteries, the light is clearly visible. The funny thing is that the filament is just right for testing AA/AAA batteries, either alkaline or rechargeable.With some practice, it is possible to distinguish between fully charged and halfway charged batteries.Connecting the batteries is much easier and faster than when measuring with DMM probes. I've tested today all the NiMH pile in no time. The biggest delay is that you have to let the bulb shine for at least 2-3 seconds at each battery, because empty batteries after a long rest can still deliver current for a couple of seconds.The logging setup from yesterday when I was measuring capacitors leakage was still on the workbench, so out of curiosity connected the light bulb instead, and measured the filament current with voltage:The light and the color temperature changes a lot between 1-1.5V, so I guess one could measure battery capacity, C (mAh), by simply connecting the light bulb then filming the light until it goes off.

author: jonpaul
author_rank: Super Contributor
timestamp: October 13, 2024, 03:46:47 pm
content: Keith McMillen Batt-O-Meterhttps://www.thomannmusic.com/keith_mcmillen_batt_o_meter.htmj

author: themadhippy
author_rank: Super Contributor
timestamp: October 13, 2024, 03:53:24 pm
content: Copyright infringement,i invented that over 40 year ago.

author: magic
author_rank: Super Contributor
timestamp: October 13, 2024, 07:39:03 pm
content: Are you sure you got the polarity right?This bulb looks like it is meant to mate with the negative.

author: RoGeorge
author_rank: Super Contributor
timestamp: October 13, 2024, 08:51:09 pm
content: The incandescent light-bulb is audiophile-grade, non-polarized.

author: 44kgk1lkf6u
author_rank: Regular Contributor
timestamp: October 13, 2024, 09:03:17 pm
content: Quote from: themadhippy on October 13, 2024, 03:53:24 pmI thought inventions were protected with patents instead of copyright. Unlike copyright, a patent is not good for 40 years.I just looked it up. It turned out the AA battery has existed since 1907.

author: SiliconWizard
author_rank: Super Contributor
timestamp: October 13, 2024, 09:06:09 pm
content: I think RoGeorge is currently trying the anti-startup approach

author: DavidAlfa
author_rank: Super Contributor
timestamp: October 13, 2024, 09:10:29 pm
content: Is it using transversal magnetic field loop tech with unpolarized ions?

author: jonpaul
author_rank: Super Contributor
timestamp: October 14, 2024, 05:06:15 am
content: Trademark: Forever(c) 60 yrs renewablePatent: Old law pre "America Invents" first to invent pty, 17 yrs after grantnew law after AI, first to file, 20 yearsj