Table of contents: Too low capacity. Voltage drops… ↓ Insufficient battery charge while… ↓ Low electrolyte level ↓ Electrolyte density too low ↓ The density of the electrolyte in… ↓
Too low capacity. Voltage drops sharply
The battery is discharged
Recharge the 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.
Poor 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 battery with a higher capacity 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
Compartment short circuit. 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 vehicle's electrical system.