Too low capacity. Voltage drops sharply
Battery low
- Recharge your battery
Charging voltage too low
- Check voltage regulator, replace if necessary
Connection terminals loose or oxidized
- Clean the terminals and tighten the clamping bolts.
Bad connection on «mass (-) battery-engine-body
- Check the connections, lay a new wire if necessary, tighten the bolted connections. Replace rusted bolts with tin-plated bolts.
Excessive battery self-discharge due to electrolyte contamination
- Replace 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 precipitated
- Replace battery
Insufficient battery charging while driving
Faulty alternator, voltage regulator or connecting wires
- Check alternator and voltage regulator. Repair or replace if necessary
The ribbed belt is loose. Faulty tensioner
- Check tensioner. Replace ribbed belt if necessary
Too many current consumers connected to the on-board network
- Install a larger battery or a more powerful alternator
Low electrolyte level
Overload, evaporation (especially in summer)
- Add distilled water to specified level (with a charged battery)
Electrolyte density too low
Low battery
- Charge your battery
The density of the electrolyte in one cell is much lower than in the others
- Short circuit compartment. Replace battery
The density of the electrolyte in two adjacent compartments is much lower than in the rest
Short circuit in the on-board electrical network
- Check the on-board electrical system