Two Batteries Connected In Parallel

Two Batteries Connected In Parallel

Two identical batteries can be connected positive (+) to positive (+) and negative (–) to negative (–) in a parallel system. A parallel system doubles capacity and maintains the voltage of a single battery. Figure 6 shows two batteries connected in parallel.

CAUTION

Do not make a parallel connection between batteries made by different manufacturers, different types of batteries, or batteries that have different Ah ratings. Decreased battery life and improper charging will result.

Do not connect an old battery to a new one.

TO DC LOADS

FUSE OR

CIRCUIT BREAKER

FROM ALTERNATOR

OR CHARGER

ISOLATOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DEEP-CYCLE

 

 

 

 

 

 

 

 

 

 

 

VEHICLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUXILIARY

 

 

 

 

 

 

 

 

 

 

STARTING

 

 

 

 

BATTERY

 

 

 

 

 

 

 

 

 

BATTERY

 

 

 

 

 

 

 

 

GROUND TO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VEHICLE

 

 

 

 

 

 

 

 

 

 

GROUND TO

 

 

 

 

 

 

CHASSIS

 

 

 

 

 

 

 

 

 

 

VEHICLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CHASSIS

 

 

 

 

 

 

 

 

DEEP-CYCLE

 

 

 

 

 

 

 

 

 

 

 

 

TO VEHICLE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUXILIARY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BATTERY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FUSE OR

CIRCUIT

BREAKER

GROUND TO

VEHICLE

CHASSIS

PROwatt 600

Figure 6 Two Batteries Connected in Parallel

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