ECTIVE BB & SBB 35
In case MPPT solar charging is not working, please check if....
• the D + signal is less than 8V. Solar charging only runs when B2B
charging is not running.
• the positive and negative poles of the solar panel are correct. The
open circuit voltage of the solar panel must be < 50V. The battery
voltage must be < 15.5V.
• the solar panel charging current does not reach the specification
value
• the main battery is almost fully charged.
• the connection diameter of the solar panel is too small. This may
affect the charging current.
• the solar panel gets sufficient sunlight.
< 75% < 100% >100%
charging current (I)
Charging Time
charging voltage (V)
boost charging voltage
U / I
float charging voltage
Main Charge
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