Siemens S7-400 Installation Manual page 165

The following figure shows how to insert two backup batteries in a double-width
power supply module.
Warning
!
Hazardous to persons and property, risk of pollutant emission.
A lithium battery can explode if treated incorrectly; improper disposal of old lithium
batteries can result in pollutant emission. The following instructions should
therefore be observed without fail:
•
Do not throw new or discharged batteries into a fire and do not solder onto the
cell body (max. temperature 100° C). Do not recharge, there is a risk of
explosion. Do not open the battery, and only replace it with one of the same
type. Obtain the replacement via Siemens (see the Reference Manual, Module
specifications Chapter 11 for the order number). This will ensure that you have
a short-circuit protected type.
•
Old batteries should be disposed of with battery manufacturers/recyclers if
possible, or as hazardous waste.
S7-400 and M7-400 Programmable Controllers Hardware and Installation
A5E00069481-04
Starting Up
6-15