S 4.31 Ensuring power supply during mobile use

Initiation responsibility: IT-user

Implementation responsibility: IT-user

In order to be able to maintain the power supply of a portable PC also during mobile use, the common practice is to use batteries. Depending on the capacity of the batteries and on the type of laptop PC, this will suffice for a limited period of time, e.g. several hours. To prevent loss of data held in volatile store after an operating voltage drop, some general requirements should be met:

• the warning signals (where available) of a laptop, which indicate a voltage drop, must not be disregarded; in the given cases, data backups should be made in good time;

• if prolonged mobile use can be foreseen, rechargeable batteries must be recharged in advance and, where required, charged spare batteries must be kept on hand;

• when handing a mobile IT system over to someone else, sufficient charging of the batteries must be ensured.

• optionally, the charger power pack can be carried.

In addition, it is advisable to save the processed data on a non-volatile storage medium at short intervals during mobile use of the IT system. For this purpose, also automatic storing provided by standard programs may be used.