Siemens S7-300 - Page 156

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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
10-10 A5E00203919-01
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EDFNXSEDWWHU\ We recommend an annual replacement
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Note your local regulations/directives on battery disposal.
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Store back-up batteries in a dry and cool place.
The shelf life of back-up batteries is five years.
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If heated or damaged, back-up batteries can ignite or explode and cause severe
burning injury.
Store back-up batteries in a dry and cool place.
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To avoid risk of danger when handling back-up batteries, note the following rules:
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Improper handling of back-up batteries could result in in
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Improperly handled back-up batteries can explode and cause severe burns.
Do not
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VKRUW-circuit back-up batteries.
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Do not charge rechargeable batteries in devices other than the CPU. The
rechargeable battery must always be charged in the CPU, in POWER ON state of
the CPU.