34 ECTIVE BB & SBB
Operating Instructions
B2B Mode (Battery to Battery)
In B2B Mode the alternator and starter battery charge the main battery.
When the ignition of the Vehicle is ON, the generator starts to work
and has a D + signal output to the Battery Booster. The starting battery
will start to charge the main battery. When the vehicle stops, and the
generator stops working as well, the D + signal is interrupted. The B2B
charging stops.
If the start battery voltage is below 10.8V, in order to prevent the start
battery voltage from being too low and affecting the normal start of
the vehicle, B2B charging stops. When the start battery voltage rises to
12.5V, B2B charging starts automatically.
During B2B-charging, the solar charging stops automatically.
In case B2B mode is not working, please check if...
• the D + signal is normal (D + signal voltage must be > 8V)
• the starter battery voltage is > 10.5V. If the battery voltage is low,
increase the generator speed to charge the starter battery.
MPPT Solar Charging Mode (SBB Models)
ECTIVE SBB Battery Boosters feature an integrated MPPT solar charging
controller with a higher efficiency than conventional solar controllers.
When the vehicle stops running and there is no D + signal, the solar
charging will automatically begin if there is sufficient sunlight.
If the supply battery (Board I) is fully charged or in the state of float
charging, the excess solar energy is also charged into the starter battery
(Start II: max. charging current 5 A). This function ensures that the
vehicle can be started even after long periods of standing.
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