Checking the state of charge of the battery

If during operation there are difficulties with starting the engine, check the degree of charge of the battery by electrolyte density or voltage at its terminals in an unloaded state (tab. 10.1). Use a hydrometer or a commercially available electrolyte density float indicator to check the electrolyte density. The voltage at the battery terminals can be measured with any DC voltmeter with a measurement limit of 20 V (a similar voltmeter is included in all commercially available autotesters).

If the battery state of charge is 75% or less, it must be removed from the vehicle and charged using a charger.

Table 10.1. Parameters for checking the state of charge of the battery