42 | RMC-100| 2105552MNAE 
 
The displayed items scroll at varying durations. When the DATE/TIME 
splays, the power-on sequence is complete.  
The RMC design has a super capacitor (Super CAP) that is a short
-term power reservoir (see 
2.2.9 for more details). The first time the unit powers on, or if the RMC is left powered off 
for several hours or longer, the boot time is approximately two minutes to allow charging of the 
super capacitor. The boot time is considerably less once the capacitor
 is fully charged. 
3.7.2  Power with battery and charger 
This powering mode requires a 12 volt (SLA) battery and a charger to recharge the battery. The 
following instructions describe the typical installation of a battery and a solar panel system as the 
charger. Adapt these instructions to alternate installations. 
 
Verify the battery and charger meet the specifications in section 3.1.2, 
Battery and charger requirements
. 
3.7.2.1  Connect the battery (dc power)  
This procedure describes the connection of the battery to the BAT port or terminal. Remove the BAT 
terminal connector to wire the battery cable before connecting the battery to the board. 
The hardware required for a battery installation is: 
–  One 12 volt SLA battery 
–  One battery cable (included with ABB-approved batteries) 
Before installation, inspect the battery cable and connectors for breakage where they terminate on the 
battery. 
To install and connect the battery: 
1.  Install and secure the battery at the appropriate location. 
– Bodily injury. Bodily injury and property damage. Do not allow the battery 
terminals to contact any metal surface. When the positive and negative battery terminals 
contact a conductive material, it creates a short circuit that could result in sparks, property 
damage, and possible 
explosion. 
2.  Pry the BAT port removable terminal connector (green connector) off the electronic board with 
a slotted screwdriver.  
3.  Trim back the covering on the battery cable wires ¼ inch (0.635 cm) on each wire. 
4.  Loosen the terminal connector screws. 
5.  Insert the wires into the required pins (Figure 3-14
). Observe the polarity (+ and -).