Identifying and troubleshooting battery problems (Opel Omega B2)

Too low capacity. Voltage drops sharply

The battery is discharged

• Recharge your battery

Charging voltage too low

• Check the voltage regulator, replace if necessary

The connecting terminals are loose or oxidized

• Clean the terminals and tighten the clamp bolts.

Bad ground connection (-) battery-engine-body

• Check connections, install new wire if necessary, tighten bolted connections. Replace rusty bolts with tin-plated bolts.

Excessive self-discharge of the battery due to contamination of the electrolyte

• Replace the battery

Battery sulfation

• Charge the battery with a small current. If the power remains low after charging, replace the battery

The battery has served its time. The active mass of the plates has precipitated

• Replace the battery

Insufficient battery charge while driving

The generator, voltage regulator or connecting wires are faulty

• Check the alternator and voltage regulator. Repair or replace if necessary

The V-belt is loose. The tensioner is faulty

• Check the tensioner. Replace the V-belt if necessary

Too many current consumers are connected to the on-board network

• Install a larger battery or a more powerful generator

Low electrolyte level

Overload, evaporation (especially in summer)

• Add distilled water to the specified level (with a charged battery)

Electrolyte density too low

The battery is discharged

• Charge the battery

The density of the electrolyte in one cell is significantly lower than in the others

(Material copied from this resource: www.opelbook.ru)

• Short circuit in the compartment. Replace the battery

The density of the electrolyte in the two adjacent compartments is significantly lower than in the others

Short circuit in the on-board electrical system

• Check the on-board electrical system