Battery with magic eye

→ Distinguishing features

• ◆ Such batteries have a magic eye.
• ◆ This magic eye -arrow- provides information on the electrolyte level and charge of the battery to be tested.
• ◆ There are three different colour indicators:
• ‒ Green ⇒Battery adequately charged
• ‒ Black ⇒ Not or inadequately charged
• ‒ Colourless or yellow ⇒Critical electrolyte level reached; topping up with distilled water essential

Note:

If a battery is more than 5 years old and the indicator of the magic eye is colourless, the battery is to be replaced with a new one.

Test sequence

Notes:

• ◆ Air bubbles may form under the magic eye, particularly if a battery has been re-charged, i.e. even if the battery has been charged whilst driving. These air bubbles falsify the colour indicator of the magic eye.
• ◆ If batteries are fitted with caps for production reasons, these are covered with plastic sheeting.

• ‒ Before performing visual inspection, tap gently and carefully on magic eye with the handle of a screwdriver.
• ‒ This disperses the air bubbles
• ‒ Observe colour of "magic eye" indicator.