service indicator SKODA OCTAVIA TOUR 2009 1.G / (1U) User Guide
Page 171 of 224
Inspecting and replenishing
170
Battery with a charge level indicator, the so-called magic eye*There is a so-called magic eye 
⇒fig. 157
 located on the top of the battery. The  
“magic eye” changes its colour in line with the charge state and the electrolyte level  of the battery. Air bubbles can influence the colour of th 
e “magic eye”. For this reason carefully  
knock on the “magic eye” before carrying out the check.•
Green colour - the battery is adequately charged.
•
Dark colour - the battery has to be charged
•
Colourless or yellow colour - have the battery checked by a specialist garage. 
Batteries, which are more than 5 years old, must be replaced. We recommend you  have the electrolyte level inspected and adjusted to the correct level or the battery  replaced if necessary by 
 a specialist garage.
Caution
If the vehicle has not been driven for more than 3 to 4 weeks, the battery will  discharge because certain electrical comp 
onents consume electricity (e.g. control  
units) also in idle state. You can prevent  
the discharging of the battery by discon- 
necting the negative terminal or charging 
 the battery constantly with a very low  
charging current. Please also refer to 
 the notes when working on the battery  
⇒ page 168, “Working on the battery”.
Inspecting the electrolyte levelThe battery is practically 
maintenance-free
 under normal operating conditions.  
We do, however, recommend that you have 
 the electrolyte level inspected from  
time to time by a specialist garage when outside temperatures are high or when driving on long trips. You should also have the electrolyte level  
⇒page 170  
checked each time the battery is charged. The electrolyte level of the battery will al 
so be checked as part of the Inspection  
Service.Operation in winterThe battery has to provide greater amounts of electricity during the winter. It also has only part of the initial power output at 
 low temperatures that it has at normal  
temperatures. A discharged battery may already freez 
e at temperatures just below 0°C. 
We therefore recommend that you have the battery checked by a specialist garage  before the start of the winter and recharged if necessary.
WARNING
Never charge a frozen or thawed battery - risk of explosion and caustic burns. Replace a frozen battery.Charging the battery A properly charged battery is essential for reliably starting the  engine.– Read the warning notes  
⇒
 in “Working on the battery” on  
page 168 and  
⇒
. 
– Switch the ignition and all electrical components off.
Fig. 157  Battery with a  charge level indicator
s2g8.b.book  Page 170  Tuesday, April 7, 2009  8:53 AM