Joule Thief

[resonanceman]

they are not made from the same materials.

alkaline batteries will, in a normal charger, heat to the point they leak or explod
this due to the materials expension and/or inner gases production, while being charge, that is greater then the material used in rechargables.

unlike rechargable, the materials used in alkaline have limited charges reversal capabilities.

I  have seen non  rechargables  recharged
I don't do it ....  I don't think  that  the savings is worth the eventual mess when  the seals give out


gary

[resonanceman]

On my battery charger JT
I added  the  4th diode   ( improvement 1)

The  output of my secondary  went up  over 3.5 V    so I added 5 LEDs
The  secondary   was  2.162 V when I first  connected the  4th  diode it is now   2.621 V   
The  battery  voltage started at 1.255 and is  at 1.257
The  battery current  jumped from .04 A to  .12 A  when I added the  diode



This  is working  great

Jesus  is my new hero 



Next  step   adding the   big cap



gary

[jeanna]

Wow improvement 1 seems great.
I am looking forward to improvement 2 

This is great jesus and gary!. I will do this. This will be my second use of the diode. Good for me to learn about this entity.

jeanna

[TheNOP]

I  have seen non  rechargables  recharged
I don't do it ....  I don't think  that  the savings is worth the eventual mess when  the seals give out

me too.
i have seen both happening.

in fact i have one "charger" i buyed 18~20 years ago that were sold as "non rechargable batteries keeper".
it is a special kind of trigger charge charger using a frequency, ~1kHz i think.

i never had a leaked or exploded alkaline with it.
it also work with cheap AA, C and D batteries

[resonanceman]

I tried adding the cap for improvment 2

I  didn't  have a 2200 uF  cap  but I did find a 1000 and  a 1200

The  caps  did not seem to change anything

I tried  both larger and smaller caps .....none seemed to  do very much


gary