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Author Topic: getting more energy out of AA and AAA batteries  (Read 18297 times)

Offline tak22

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Re: getting more energy out of AA and AAA batteries
« Reply #45 on: May 10, 2018, 09:53:00 PM »

Control battery change over 14 days is 1.745v - 1.571v = 0.174v, which is a drop of 9.97%
Magnet battery change over 14 days is 1.753v - 1.605v = 0.148v, which is a drop of 8.44%


Overall the batteries with magnets have dropped 1.53% less than the control.

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #46 on: May 10, 2018, 10:10:01 PM »

Thanks Tak,

i was planning to do something similar in about 1 week (3 weeks runtime).

As we have some variables like different leds etc. i am planning to recharge the batteries then, swap them over and redo the same test for again 3 weeks.


Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #47 on: May 13, 2018, 11:34:46 AM »

After 4 days:

Magnet powered  1.593V
control                1.557V      at the leds.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #48 on: May 16, 2018, 10:52:41 AM »

After another 3 days and totaling 3 weeks:

Magnet powered  1.587V
control                 1.225V      at the leds.


Guess the control batteries are drained

I will be freshly charge all batteries and swap them over so they load the other leds they did before and rerun the test for again 3 weeks.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #49 on: May 17, 2018, 09:56:29 AM »

Freshly charged all batteries.

The magnet powered batteries are now loaded by the former 5 control leds, now at 1.764V (at the leds)
The control batteries are now loaded by the former 5 magnet powered leds, now at 1.772V (at the leds).

Will leave it running again for 3 weeks.


Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #50 on: May 19, 2018, 08:54:26 PM »

After 2 days:

Magnet powered  1.760V
control                 1.768V      at the leds.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #51 on: May 24, 2018, 05:13:28 PM »

After 5 days:

Magnet powered  1.745V
control                 1.754V      at the leds.

Itsu


Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #52 on: May 26, 2018, 12:00:12 PM »

After 2 days:

Magnet powered  1.743V
control                 1.752V      at the leds.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #53 on: May 28, 2018, 09:17:40 PM »

After 2 days:

Magnet powered  1.737V
control                 1.746V      at the leds.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #54 on: May 31, 2018, 08:44:17 PM »

After 3 days:

Magnet powered  1.687V
control                 1.673V      at the leds.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #55 on: June 02, 2018, 06:42:58 PM »

After 2 days:

Magnet powered  1.636V
control                 1.654V      at the leds.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #56 on: June 04, 2018, 08:38:42 PM »

After 2 days:

Magnet powered  1.615V
control                 1.637V      at the leds.

Itsu

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #57 on: June 07, 2018, 11:05:59 AM »

After 3 days (makes it 3 weeks):

Magnet powered  1.605V
control                 1.624V      at the leds.


So i think we call this busted, see the load graphs below.

First graph one was with a set of batteries charged more then 1 year ago.


Second graph was with freshly charged battery sets and swapped load (leds + 180 Ohm series resistor).

There is very little deviation, a little strange is the "swaps" around 1.7V, but i guess that can be due to the
condition of one of the "battery powered" batteries.

No extraordinary power by the "magnet powered" batteries was seen.


Regards Itsu

Offline mak27

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  • Posts: 19
Re: getting more energy out of AA and AAA batteries
« Reply #58 on: June 14, 2018, 02:16:37 PM »
I believe the experiment would have turned out differently, Itsu if you had used a real piece of steel under the magnets instead of  athin piece of sheet metal ( and an L shaped one at that) So different batteries, different LEDs, different steel equal different results!!!

Offline itsu

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Re: getting more energy out of AA and AAA batteries
« Reply #59 on: June 14, 2018, 03:21:42 PM »

Now you tell me!

Itsu