3 Battery System up and running

[wwdotme]

Merry Christmas all

I got the 3 battery system fired up on this cold snowy morning.
Using 2n3055 transistors and starter batteries 550 CCA's
diode is a 1n5400
load is a ge 194 bulb
all batteries had a rest voltage of about 12.6
first run lasted half an hour and bat 3 was over 14v
switched batteries.
second run about 20 min bat 3 over 14v
voltage on load is 8volts
bat 1 & 2 only lost a 2~3 tenths of a volt I believe
not positive its COLD in the garage today............
So I wasn't really keeping any records just seeing if it worked.

that was all the time I have this morning will run more tonight
At this rate all batteries will be charged in a couple more rotations.
Will start increasing load to use up power in the batteries
till I find a load that keeps everything in balance.

Bill

[Inquorate]

@ wwdotme - are you pulsing the circuit, or is it always on? If you are getting a gain, I wonder if you would get more this way?

Conditioned electrolytic capacitor Electret effect test - Vox

[wwdotme]

no not pulsing
just on till charge battery is over 14v
then rotating.

on 3rd rotation tonight bat 1 & 2 dropped a couple tenths then held steady
while bat 3 climbed
and load volts was at 9 volts this time.
not sure if first reading was poor connection or not.
But voltage on bat 1 & 2 is higher each time I rotate them.
So things are looking good so far.

still no solid data as my garage ink pen refuses to write in the
freezing cold garage. heat in the garage is down at the moment till
I can get my babington heater put together and running.

Bill

[wwdotme]

well got a chance to run a data test

rest
b1= 12.79
b2= 13.31
b3= 12.94
total= 39.04

started test load voltage was 8 volts with 2 ge 194 bulbs
ran the test for 3 hours till battery 3 was up to 14.87 volts
let the batteries rest for 1 hour

b1= 12.74
b2= 13.05
b3= 13.28
total= 39.07

load voltage dropped the hole test ending up at 6.14 volts
at the end of the test.
a gain of .03 volts + an average load of 7.16 volts

hooked up a headlight off a car for a bit but transistors started to get hot.
Load voltage was only 3 volts and b3 started charging fast
b1 and b2 voltage dropped below 12 volts
So I cancelled that test before I burned up a transistor. Too much of
a current draw.
Bill

[nvisser]

Running Headlights

The way I see this test is as follows
The energy used by the load doesn’t get wasted, but goes into your third battery. A battery can only absorb a certain amount of energy at a time so if you use a headlight some of the energy will get wasted as batt 3 cannot absorb so fast. If you change batt 3 into a lot of parallel batteries more of the energy passed by the load can be absorbed
I think what I’m trying to say is that if you want to run big loads you need lot of parallel batteries on your receiving side and the same amount and your source side. 2 stacks in parallel that are connected in series to give 24v
I hope this make sense

[wwdotme]

more of the energy passed by the load can be absorbed

I get it now the energy used by the load is what we are charging the 3rd battery with.

And the load drops because the potentional difference changes as b3 gains charge

Is this correct?

Thank for the explanation

[wwdotme]

after a 12 hour rest the voltage on the batteries has risen.

b1= 13.23v
b2= 13.65v
b3= 13.69v
total= 40.57v
thats a .5v gain just from resting over night.

well headed to chicago today won't get to do anything else
till thur.

Bill

[wwdotme]

I hooked up a small dc motor out of a printer for the load replacing
the 194 bulb and b1 and b2 starting gaining in voltage and b3 started
dropping. B1 went to 14.68 volts in just a few min. b3 dropped close
to what it started at.
whitch b3 was a dead battery only showing 8.5 volts
the load was measuring 11-12 volts.
b2 rose to 13.24 volts.
I then hookeed the light back up and b1 ,b2 voltage dropped back
done to where they started b1-12.86 and b2- 13.01
b3 slowly charging again 9.15

[wwdotme]

I have also noticed that when I shut the system down with batteries still
connected that the batteries gain voltage. This morning b1 was over 14 volts
b2 was 13.26 b3 was back to 8.5 dead.
Yet when I hooked up the motor and turned it on b1 and b2 started gaining
voltage and b3 held steady.
b1 went to over 15 volts.