Finally I got my HP-67!

[Artur - Brasil]

I Love this machine blinking The leds while computing!!!
Would give a treasure to Discover what is going on with so many dots, slashes etc blinking.
As usual, a Li-ion cell Phone and charger circuit took place of old Ni-MH batteries and a simples cell charger instead off HP wall charger.
See my work!
Now, two 41, one cassete drive and one hp-il printer, and the 67 on Li-ion batteries.
Pics show charging process. I was afraid of destroying the case trying to cut it on side. So, I attached The circuit to the battery door, by inside. Just release it tô get acces to charger conector.
}