David Bowling's Continuous Charging Device

[Hoppy]

Hoppy,
I am going to run the Modified 3BGS circuit. There is no need to stop it and rest the batteries. It is a stable circuit. The buffer battery stays at about 12.2 volts while drawing energy out of it to run the inverter. The two dead batteries hold their voltage, although sometimes transducer 2 climbs in voltage (which we DON'T want.) And the primaries hold level. The longest run anyone has done with this circuit is 10 hours. I believe I can run it for a really long time, so measuring the SG of all the batteries once at the beginning and once at the end is all that is needed. No stopping, no recharging of anything. If transducer 2 gains too much charge, I will simply stop, discharge it, and start again from where I left off. I am going to run it until it won't run anymore or several days go buy of recorded continuous loads that far exceed what is possible from two batteries, and then we will measure the SG of all the batteries again and see where we are. I know you don't have any faith, but I do. I have been working with this for five years and I know what I have seen. Too many others have seen the same thing.


Dave

David,

Its important to know how much energy you have put into the batteries before starting a run and have a benchmark as to when to stop the run even if you only do one long run. Otherwise, you do not know how much energy is stored in the battery to begin with in order to calculate COP. I have no doubt that you can run it for a really long time but how long is longer than should be expected for those batteries,  if you don't know what energy you started off with! You can't charge your good batteries from nil capacity or run them down to nil capacity (unless you want to add them to your bad battery pile), so you need a benchmark as to how long the system runs before you system starts eating into the charge that was already in the batteries before you charged them. Otherwise, your results could be really skewed. How do you propose to establish this benchmark?

Hoppy

[Dbowling]

I have run this motor/gen combination off a fully charged battery until that battery would no longer run the motor. I did this half a dozen times with these brand new lawn and garden batteries and they were all within minutes of each other in run times. I posted those run times already somewhere on EF, but the times are in my notebook. When I have six batteries and they all run the motor for about the same length of time on a full charge, I ASSUME that is about how long they should run that load. Yes, I know SOME batteries might be able to run the load longer, but...TWO of these are the SAME two batteries I am using as my primaries. Now, you have to admit, When they were brand new and fully charged they should have run this motor/gen combo for longer than they will now that I have totally abused them by draining them until they would no longer run the load. So I KNOW how long the good batteries will power this load under the best of circumstances. Now I am adding 4 coils to the generator, which will make it run harder and draw more amps. I am adding the two dead batteries and the buffer battery that is a GOOD battery but has been purposely drained down to 12 volts. I will measure the specific gravity of each cell of all of these before I start.


By the way, that is how I have figured out how long ALL of my batteries should run my load. I bought ten of the 18 1/2 amp hour batteries and used each one to run the motor until it wouldn't run any more. Recorded those run times. Yes, some run the load a little longer than others, but not HOURS longer, NOT days longer, and certainly not WEEKS longer. I took four of those batteries I wanted to kill and recharged them; then did that process over and over and over until they became my "bad" batteries for my experiments. And I recorded THOSE run times too. So I have a fairly GOOD idea of how long a brand new battery will run my motor as a load. Yes there are exceptions to the rule, but they don't happen every time. That's why it's called an exception. With this setup you get those long run times EVERY TIME. That is why I believe there is something there. But...we will see.

[Hoppy]

David,

I hear what you say and hope that you can verify this by taking and recording energy measurements.

[Dbowling]

If you guys are watching the thread at EF, you will see that we have a fairly stable setup that is able to run loads while keeping the primary charged and in some cases increasing the voltage in the primaries. The issue is, it will NOT work with lead acid batteries, only with AGM. Can anyone suggest a test that would satisfy everyone using AGM batteries? I would be happy to conduct that test and post the results. I don't know that measuring the specific gravity of AGM batteries will give folks the proof they are looking for.


Dave

[TinselKoala]

AGM batteries are just Lead-Acid batteries with glass fiber mats, sort of like sponges, to hold the electrolyte and to permit H and O recombination, like other SLAs, so no water needs to be added like you have to with flooded LA batteries.

The chemistry is the same as ordinary Lead-Acid batteries, except for the recombination... and this is the same for all SLAs whether they have glass mats, gels, or other electrolyte retention systems.

So what is the explanation for why this system only works with AGM batteries and not other SLAs?