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8.0 Battery Replacement
WARNING
The battery may be replaced by service personnel only.
When the UPS is installed in a Class I, Division 2 Groups A B C D or Class I Zone 2 II C hazardous
location, adhere to the following:
Warning — Explosion Hazard – Do not connect or disconnect the battery unless the area is known
to be free of ignitable concentrations.
NOTE: Replace only with the battery manufacturer and type shown below�
Models SDU 500B, SDU 500B-5 SDU 850B, SDU 850B-5
VA/Watts
500/300 850/510
Battery
CSB type
XTV 1272F2FR
Yuasa type
REW7-12FR
CSB type
XTV1285F2FR
Yuasa
REW45-12FR
Steps to Replace Batteries
Step 1: Remove battery cover�
Step 2: Disconnect the terminal of battery wire�
Figure 8: Disconnect the Battery Wire and Remove Cover
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