A Tale Of Two Batteries - Bedini Fan Motor Results

(See earlier blogs on fan motor kit) . So, to begin with we used the "grey" battery as the primary and the "black" battery as the one being charged. According to the manufacturer's labels the grey is 12v and 66 Amp hour and the black 12v and 45 Ah. The grey battery is the one we have worked on longer,"conditioned" being the one most originally "decrepit".The black battery was taken out of my old car before it was scrapped and was still a good battery. The difference in amp hour rating in the batteries is regrettable in terms of keeping things constant and just varying one thing at a time, but we live in the real world and don't have inexhaustible funds to buy identical batteries - perhaps later on :-)

So with the usual set up we took the following readings with the analogue multimeter. The accuracy allowed me to take voltage readings to the nearest 1/4 of a volt.

I tried to take readings every hour or so.

Primary Charging
29/7/10 14:12 Grey=5.5 V , Black 11.25 V
15:18 5.5 11.25
18.59 5.5 11.5
22.20 6.0 11.5
23.40 6.0 11.5
30/7/10 03:28 6.0 11.5
08:52 3.5 11.25
09:39 3.5 11.25
10:52 3.5 11.25
12:14 3.5 11.25
14:21 3.25 11.25
16.58 3.25 11.25
19:13 3.5 11.25
21:01 3.25 11.5
21:58 3.5 11.5
23:04 3.5 11.5
31/07/10 02:01 3.5 11.5
08:15 3.0 11.5
11:00 3.25 11.25
12:13 3.25 11.25
15:55 1.5 11.25
17:47 1.5 11.25
18:59 2.0 11.5
19:47 2.0 11.5
20:37 2.0 11.5
21:46 2.0 11.5
1/08/10 00:04 1.5 11.25
01:16 2.0 11.5
08:44 1.5 11.25
10:25 1.5 11.25
11:03 1.5 11.25
13:03 1.5 11.25
13:31 1.5 11.25
15:05 1.5 11.25
15:34 1.5 11.25
17:40 1.5 11.25
19:02 1.5 11.5
20:25 1.75 11.25
22:30 1.75 11.5
23:28 1.5 11.5
2/08/10 07:55 1.5 11.0
08:50 1.5 11.25
11:20 1.25 11.25
12:13 1.25 11.25
13:19 1.25 11.25
14:32 1.5 11.25
15:56 1.5 11.25
17:10 1.25 11.25
18:26 1.25 11.25
19:15 1.25 11.25
20:53 1.5 11.5
21:33 1.5 11.5
22:58 1.5 11.5
3/08/10 00:15 1.5 11.5
02:08 1.5 11.25
09:10 1.25 11.25
10:21 1.25 11.25
12:47 1.25 11.25
15:16 1.25 11.25
16:20 FAN STOPPED as I was resting elbows on table to take voltage reading. It was moving very slowly at this stage. So, the fan motor worked for over five days before the primary battery became "flat" (whatever that may mean :-) )

The batteries were now swapped over
Primary Charging
3/08/10 16:37 Black = 11.0 V , Grey= 2.0 V
16:55 11.0 2.0
17:35 8.75 3.25
18:56 9 4
21:49 9 3.75
23:24 8.75 4
4/08/10 00:48 6.25 4
09:07 3 3.5
12:36 3 3.5
15:15 2 3.5
19:30 STOPPED BY THIS TIME

STARTED AGAIN WITH BATTERIES IN SAME POSITION but soon stopped.

SO, the lower amp hour battery only powered the fan for over a day.

Conclusion.
I was disappointed initially with the seemingly poor performance of the fan motor after swapping to the lower amp hour battery as the primary source. I was expecting a longer running time, EVEN ALLOWING FOR THE LOWER Ah , a proportionate running time might have been something like 45/66 x 5 days....very roughly three and "a bit " days instead of one day and "a bit" that we got.

Tom Hackett reminded me that it was the conditioned battery that had run the longest, and more to the point, proportionately longest( according to the Ah).

Tom, using his own Bedini motor has been working on two clapped out batteries of his own. More on this on a later blog, but after some discussion with him we once again had the sense of what all the different measurements (current,voltage, power,energy, work etc) mean in the real world. Tom said a small lamp attached to the batteries was somehow giving him a greater sense of the battery's "potential" for work than the voltage reading took. Tom's feeling is that something is "definitely going on " with the Bedini charged batteries. On the face of it the greater conditioned battery above worked harder than the less conditioned black battery. Drawing on Tom's observations here and elsewhere on the blog, we are seeing something in terms of battery conditioning, but what this means in terms of assessing "overunity", remains to be seen. For now we continue with the experimenting.