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Figure 3-3 Backup Batteries – Exploded View
3) Remove the old battery from the RTU.
4) Check the replacement battery visually. If the battery looks deformed, if you notice
corrosion on the battery terminals, or the battery leaks, DO NOT use the replacement
battery; get another replacement battery.
5) Check the replacement battery terminal voltage level before connecting it. If the
battery voltage is less than 12.42V DC, DO NOT use the battery and replace it.
6) If the replacement battery passed the visual inspection and the terminal voltage is
satisfactory, put the battery into place on the RTU and screw in the battery holders.
7) Connect the battery cable to the battery terminals in the correct polarity.
8) Connect the battery cable to the Battery In/Out connector on the front panel of the
power supply module.
9) Recharge the replacement battery for 10 hours to be fully charged.
Power Supply Module and Backup Battery
3-18
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