Near Space
Figure 3. This is what the inside of my
charger looks like.
power connectors in the modified
battery
• Wire cutters and strippers
• Solder and a soldering iron
• Heatsink clip or other small clamp
Procedure
It shouldn’t be necessary to say
this, but please make this modification while the charger’s wall wart is
disconnected from the charger base.
Under no circumstances should you
make this modification while the
charger is plugged into the wall.
Look at the pocket of the charger.
You will see two pairs of metal pins.
Two metal pins make an electrical
connection with the battery and the
two other metal pins detect the presence of the battery. Unless a battery
is pressed into the charger pocket,
the charging pins are not pressed into
contact with the charge circuit. In this
way, there is no voltage present at the
charging pins when the battery is not
located in the pocket. It’s been a while
since I modified my charger, but this
is how I made it.
The case of the charger is held
together with two Phillips screws
located in the bottom of the charger
case. Remove these two screws and
the case should pop open. The two
bottom pins (the battery detecting
pins) pull right through the holes
in the case. The charging pins
also pulled out of the case when I
opened it.
Now, look inside the charger and
identify the two pairs of leaf springs
containing the two battery detecting
pins and the two charging pins. The
top leaf spring contains the battery
detecting pins that protrude from the
bottom two holes of the charger
pocket. The bottom leaf spring is connected to the two charging pins that
protrude from the top two holes of the
charger pocket. Notice that the two
leaf springs form the switch inside the
plastic case that lets current flow into
the cell phone battery when it is
dropped into the charger pocket.
The first modification to make
involves soldering the two leaf springs
together so there’s always power from
the recharge circuit. Use a heatsink
clamp and clamp the top and bottom
leaves together on the side of the
springs where the battery sensing
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