Ultracaps tested for excess energy

[MileHigh]

Albert:

The resting voltage means that you disconnect the battery from the circuit and wait one hour and then measure the unloaded battery voltage with your multimeter.

What makes you think that the resting battery voltage drops linearly with the percentage of remaining charge in the battery?  That is just an old wives' tale that most of you believe but it is NOT  TRUE.

If you do the experiment like I said then you can find out for yourself.

I may comment on your BCAP to BCAP experiments later.

I have explained to you why the circuit runs for so long, and that the battery will eventually die.  I have also explained to you that you are making a mistake by looking at the battery voltage only.   All that you need is some patience and your battery in your experiment will run out of juice.

MileHigh

[MrMag]

MileHigh is right. The "standing voltage" will stay high for most of the battery life.

I can't count how many times I looked for a battery for a flashlight and found one with 1.5 volts just to have the light dim after a few seconds.

A battery under load is a different story.

[PaulLowrance]

After just logging in today I made a post in the joule thief main thread about doing two new experiments. 1) Find out how many times my fully charged AA 200mAh NiMH battery can charge the UC. 2) See how much energy is in the fully charged AA battery by connecting a load and data logging. After reading the recent posts in this thread, it seems experiment #2 is more important right now.

It's a fact that the voltage from any battery begins dropping after using it. The rate at which the voltage drops is slow at first and increases at a faster rate over time. Every type of battery has different characteristics.

Paul

[innovation_station]

i do agree

i did do extencive tests on batteries ...  wile expairmenting with pulse motors ..

to gain a PROPER mesurement ..  you must drain your battery and record the amount of time it lit xx load recharge it and repet 3 times .. base calculations on avarge of the 3 tests then you know EXACTALLY HOW much IS THERE TO START WITH ...  then  recharge the 4th time and run jt .. till battery is drained ... lol

count how many times ubc is recharged ... base calculations on engery stored in ubc...

then find input vs output!

and properly calculate cop .. : )

ist!

now if you find yourself to have a jt that the voltage cuts off....  as mine are designed to do at .5 volt ... so i dont have to fill the hole damm thing agin ... : )

you can then drain battery out as low as jt will drain it ... and repete load study from first test ... record time load ran from remaining engery in battery ... and  compair ############

have fun ... you all know im right ... lol

[gadgetmall]

MileHigh is right. The "standing voltage" will stay high for most of the battery life.

I can't count how many times I looked for a battery for a flashlight and found one with 1.5 volts just to have the light dim after a few seconds.

A battery under load is a different story.

Exactly . This is the condition I am talking about Discharge Charistics . I tried explaining  DISCHARGE % .We are talking run battery for My circut.  My Standing volts from my experiment is after the battery is Charged and set for a day . He is Wrong and says a battery is 1.3 volts 100% and 1.3 volts 20%  Under load . BS.