Audi 80 Quiz
Body Electrical System

Battery Charging

In this manual: Body Electrical System
Technical Description — 39Engines — 41Exhaust System — 13Cooling System — 28Fuel tank and fuel pump — 12Air Filter and Intake Ducts — 13Mono-Motronic Injection System — 18Digifant Injection System — 19KE-III-Jetronic Injection System — 35MPI and MPFI Injection Systems — 32Clutch — 11Transmission and Driveline — 21Suspension and Steering — 33Brake System — 41Anti-lock brake system — 8Wheels and Tires — 13Body Electrical System — 35Ignition System — 24Lighting — 14Signaling Devices — 7Instruments and Auxiliary Equipment — 54Heating and Ventilation — 7Body Components — 18Troubleshooting — 6Specifications — 13
~1min read

Connecting the Battery Charger

PROCEDURE

Connect the positive lead to the positive battery terminal and the negative lead to the negative battery terminal.

The battery may remain installed in the vehicle during charging.

It is not necessary to disconnect the battery cables when using a low-output charger.

The battery cell caps may remain installed. Gas produced during charging can escape through the vent holes in the caps.

The initial charging current should be approximately 10% of the battery capacity (for example, 4 A for a 40 Ah battery) and should decrease automatically during charging.

The battery is fully charged when the acid density does not rise for two hours.

During charging, distilled water partially decomposes. Bubbles of hydrogen and oxygen gas form – a highly explosive oxyhydrogen gas.

Therefore, make sure the area is well ventilated, especially when charging at high current.

Do not smoke or use open flames near the battery while charging.

Explosive gas may ignite from a spark when connecting or disconnecting the charger or the battery cables.

Test yourself

A quick Audi 80 quiz: every answer comes with an explanation and a link to the manual page.