Recharging the battery (Ducati ST2)

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If the motorcycle is not used, the battery loses as much as 1% of its charge a day in hot climates (see graph). Under these conditions, the battery should be recharged at least once a month. If the battery charge is too low, it may not accept a high charging current. It is therefore necessary to reduce the charging current and lengthen the charging time (for example, 25-30 hours at one twentieth of the nominal capacity).

In cold climates, the lubricating oil is more viscous and this increases the battery power required to start the engine. A cold climate also diminishes charging capacity and battery efficiency.

To determine charging time as a function of battery capacity, use a densimeter to measure the specific gravity of the electrolyte.

The battery must be recharged slowly with a charging current (CC) of one tenth of the nominal capacity (C).

Caution! Do not recharge the battery at voltages above 15.5V. Do not charge at high current or recharge amperage.

• %S) Discharge percentage
• Gi) Period of inactivity (days)
• %Eb) Battery efficiency
• Те) Electrolyte temperature
• Ps) Specific gravity at 20°C/68°F
• Tc) Charge time (hours)

Note. To check the charging current, use the "MATHESIS" tester.

See this article in russian language

Article about repair motorcycles «Ducati ST series ST2» (1997-2003): «Recharging the battery»: https://motoinstruction.ru/en/Ducati/ST/ST2/electric/starter/112191 <a href="https://motoinstruction.ru/en/Ducati/ST/ST2/electric/starter/112191">Recharging the battery</a> - article about repair motorcycles «Ducati ST series ST2» (1997-2003) from section «Starting and charging system». [url=https://motoinstruction.ru/en/Ducati/ST/ST2/electric/starter/112191]Recharging the battery[/url] - article about repair motorcycles «Ducati ST series ST2» (1997-2003) from section «Starting and charging system».