DIY Manual

60 | P a g e 10-543-1 REV A
DIY Manual
Notice the orientation of the WBJr purple wire relative to the shunt – the purple wire points
toward the battery bank. Very important for the WBJr to be mounted this way; if mounted
backwards, your current readings will be inverted.
Classic Charge Controller Settings
Whiz Bang Jr Status Page
1. Depress Right Soft Key (upper right button)
2. Enter the following data:
a. Battery bank amp-hour capacity
b. Battery Efficiency
3. Depress Right Soft Key again
4. Enter the following data:
a. Battery temperature reference
b. Leave the change % at 0.0% unless in winter time when your bank will lose
capacity. Adjust by 0.5% at a time. This brings the SOC into line with available
capacity. It is trial and error. Basically you will match SOC versus bank voltage
(i.e., 50% SOC equals 12.1V for a 12V bank).
5. Depress Enter button to save changes.
AUX Menu
1. Depress right arrow, highlight the Aux 2 column
2. Depress Right Soft Key (reads “Setup” on MNGP)
3. Scroll up/down using arrow keys to highlight WHIZBANG JUNIOR
4. Depress Enter button to save changes
Figure 17