30 Caliber - Under The Hood
Shown here is the engine that drives my 30 Caliber power pack, as seen and described by following the link below.
The purpose of this circuit board is to monitor the battery while the power pack is in use, and too display the state of charge in the battery through the LED's mounted up top.
Once the battery is placed in the charge mode, this board regulates the charge being applied to the battery, and the LED's once more come in to play by displaying how the charging is progressing.
Not shown in the photo is the charge port that is used for recharging the power pack.
30 Caliber Power Pack up top.....