I have for a very long time want to have a high capacity battery pack for my phone and tablet
I have played around with this idea for at least a year or so
Now I have gone to final stage of putting the items into practice I have made a test prototype and the results turned out better than I had expected them to
I will post some pictures of this setup when I have the unit put together and done some testing of the unit
If have this in the wrong forum please move it to the right one
I still have not figured out how to use this forum setup so please forgive me
Well I finally have some results of the testing of this battery pack with
“ Bosten Power Sonata 5300 Rechargeable Batteries ”
the batteries are used cell in a device that was used hospital battery powered computer
supply’s the battery pack contains 15 cells )
I remove one battery from this battery pack case so that the battery pack would be balanced because the battery pack cell phone / tablet charger module requires 8.4 volts to work correctly
The battery is supposed to be 5.3 amp hours when testing these used batteries the results I got was about 4.8 amp hours these were randomly selected for testing about 6 of them out of two battery packs
The testing results are as follows
31 hours at 1.5 amp load = 46.58 amp hours
Here are the pictures of the unit that I built
If anyone is interested in buying the “battery pack case” ( this includes the batteries ) let me know and I will post a link to where I bought them