question

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c210pa18 asked

SmartController not able to set Bulk charging voltage

I am setting up a SmartSolar Controller 150/35 to charge my battery pack. Using Victron Connect app (iOS) it does not allow me to set the Bulk Voltage. It does allow me to set the Absorption and Float voltage. That is one problem. Also, when in operation the controller goes into Bulk charging but uses the lower Float voltage setting. Then when it switches to Absorption mode it does use the higher absorption voltage. This appears to me either a Victron Connect problem or a SmartSolar firmware problem. What am I missing ?? I'm new to this site so maybe this has already been discussed. Any help with these issues would be appreciated.

battery charging
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Alexandra avatar image
Alexandra answered ·

@c210pa18

Bulk and absorption are the same voltage.

The difference between the two stages of charging is current draw by the battery.

The settings are explained in the manual.

The rebulk offset will trigger the higher current charging again on the mppt.

The different stages of charging are described here.

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