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3. Small service battery and solar panel

PREREQUISITES

A dual battery system where the D250SA char-

ges a 40–300Ah service battery from a solar

panel, an alternator, or both which also charge

a starter battery.

STARTER

BATTERY

It is advantageous to use this installation when:

• The alternator is not able to deliver the desired

charge voltage.

• Charging from a solar panel.

PREREQUISITES

A dual battery system where the

SMARTPASS 120 charges a 28–800Ah service

battery from a alternator which also charges a

starter battery.

It is advantageous to use this installation when:

• The alternator is able to deliver the desired

charging voltage.

• The service battery capacity is greater than

100 Ah.

STARTER

BATTERY

• The consumers are supplied directly from the

alternator at the same time as the service bat-

tery is being charged.