| Electronics > Projects, Designs, and Technical Stuff |
| Batteroo testing |
| << < (22/127) > >> |
| EEVblog:
So Frank has entered the first test in the spreadsheet (the toy train): https://docs.google.com/spreadsheets/d/18K9c2YAT0d0QABGYGpzItbvDcgfAQCRUtloEzzfXADU/ And it was nothing short of a horrible result. -53% (minus!) Batteriser run time with a new battery, and a paltry 3.1% extra run time form the "flat" battery. Not 30%, not 300%, 3%. |
| CJay:
--- Quote from: EEVblog on December 22, 2016, 11:48:36 am ---So Frank has entered the first test in the spreadsheet (the toy train): https://docs.google.com/spreadsheets/d/18K9c2YAT0d0QABGYGpzItbvDcgfAQCRUtloEzzfXADU/ And it was nothing short of a horrible result. -53% (minus!) Batteriser run time with a new battery, and a paltry 3.1% extra run time form the "flat" battery. Not 30%, not 300%, 3%. --- End quote --- It's a bloody awful result and I'd not expected it to be anywhere near that bad but can we be sure the original cell wasn't faulty* from the packet or was it repeated with other cells? Or am I misunderstanding how the test was applied? *(it's happened to BigClive with Duracell Simply AA cells, one was around 400mAH and the other from the same pack was 1700mAH) |
| FrankBuss:
--- Quote from: CJay on December 22, 2016, 12:07:27 pm ---It's a bloody awful result and I'd not expected it to be anywhere near that bad but can we be sure the original cell wasn't faulty* from the packet or was it repeated with other cells? --- End quote --- You are right, I should have measured the voltage. But the speed of the train was as fast as with the other cell, at least in the beginning, and the 4 minute result is not affected, because this was done with the other battery which was used in the first test. For details see the video, it is uploaded now (needs still some time until HD is processed for better quality) : Video description: Testing a Brio Battery Powered Engine, Art# 33595, with the Batteroo sleeve. The tracks were glued with double-sided tape to the pertinax board, for same test conditions. Result: without the sleeve it ran for 127 minutes, with the sleeves for 59 minutes and using the sleeves on the dead battery of the first test, it ran for 4 minutes. The video shows all 3 tests in one shot, no editing, only time lapse when it is not interesting. In the small overlay at bottom right in the first half of the video, you can see the test with the sleeve, to compare it without the sleeve. At 6:28 you can see in the overlay how it dies with the sleeve, while it is still running without the sleeve at this time, and after this you can see the 4 minute run, and at the end of the video at 24:20. You can also see that the train runs faster without the sleeve. Conclusion: The Batteroo sleeve has no advantage for this toy. I published the video under CC license, so anyone can use it for own videos, for voice overs etc. (I'm not much of a talker, as you can hear in the video). |
| onlooker:
I guess the "dead" battery was allowed to recover for about one hour before test 3. One more interesting test as others have already mentioned is to measure a "dead" battery's extra time without the sleeve and after one hour recovery. |
| FrankBuss:
--- Quote from: onlooker on December 22, 2016, 01:58:09 pm ---I guess the "dead" battery was allowed to recover for about one hour before test 3. One more interesting test as others have already mentioned is to measure a "dead" battery's extra time without the sleeve and after one hour recovery. --- End quote --- Right, I guess it might be longer, too. But doesn't matter much, the interesting result is that the advantage is 3% instead of 300%. Maybe a problem while they calculated it? "0.03, hmm, times 100, percent. Oh, did I already pressed enter?" :-DD But I just did the train test with the sleeves again, this time checking the battery (was from the same pack of 4) and open loop voltage was 1.6 V. It is important to verify experiments. The Batteroo sleeve was the other one I have, so no faulty sleeve, no faulty battery. Time confirmed, 61 minutes this time. The train is available everywhere to buy, e.g. Amazon, everyone can do the same test. I didn't specifically chose the train because of its bad performance, it was just one of the few items I could find at all which has a motor and uses 1.5 V AAA batteries. I expect lots of other similar toys will have the same problem, like probes the monkey. :popcorn: While testing the MP3 player, the clips at the end broke off of one of the sleeves I have when I removed it from the player. I was careful, but the MP3 player has little springs at the positive battery terminal, too, and it seems it got stuck with it. Can't find the clips, they are in Batteroo nirvana now. Trying to photograph through the lens of my microscope (I'm sure Dave's awesome Tagarno will produce much better images soon). Looks like they were soldered: And the inside: |
| Navigation |
| Message Index |
| Next page |
| Previous page |