Recent content by johnpham

  1. J

    How to adapt Li-ion batteries to replace AA batteries

    Li-ion batteries are so much better than AA batteries, with few of them we can get the energy of several AA my question is, would all the mAh damage the circuitry of ordinary toys and stuff? How can I use 2 3,7 v 1000mAh batteries to replace 8 AA batteries? what circuitry is needed for...
  2. J

    Help for Desulfator charger lead acid battery!

    Hello, everyone I need your help to assemble charger for lead-acid battery charger . I have a ( 6 volt 12ah )battery which was forgotten and for many months and he had died . Added  distilled water and got her back to life with the ordinary  charger. But inside  I see white crystals and need...
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