User Manual
CH.2  15 MAR 2003  PAGE 35 
    MAN0305-04 
2.7  Mini Battery Replacement 
The following instructions apply to the MiniOCS and MiniRCS. 
1.  Disconnect power from the unit. 
2.  Remove ground screw (item #1) from back of unit. 
3.  Remove back cover (item #2) by carefully pressing in on one corner locking tab and lifting back 
cover to disengage the locking tab. Repeat this for all four corners. 
4.  Unscrew the grounding spacer (item #3) using a ¼” Hex nut driver. 
5.  Gently lift up and remove the I/O board (item #4) from the three snap top fasteners on the CPU 
board. 
6.  Once the CPU board is exposed locate the battery (item #5, U7). Remove the battery by prying 
up slightly on each end until it lifts free. Dispose of the battery. 
7.  Replace the battery with HE500BAT005 noting the polarity tab at one end of the battery. Use 
care when replacing the battery that this tab is located in the right direction. Use only the authorized 
battery part number.  
8.  Reassemble the Mini unit by first replacing the I/O board then replacing the ¼” hex spacer. It is 
recommended that Loctite
 222MS Threadlocker or an equivalent be applied to the male threads of item 
#xx before reassembling. Line up the back cover with ground hole over the ground spacer and press back 
in place. Make sure all four locking tabs of the back cover snap into place. Reconnect the ground wire. 
Follow the instructions in the units’ manual for powering up the Mini and restoring it to operation. 
Figure 2.24 – Battery Replacement 
Warning: Disposal of lithium batteries must be done in accordance with federal, state, and local 
regulations. Be sure to consult with the appropriate regulatory agencies before disposing batteries. In 
addition, do not re-charge, disassemble, heat or incinerate lithium batteries. 
Warning: Do not make substitutions for the battery. Be sure to only use the authorized part number 
to replace the battery. 
4
3
1
2
5
OR










