Xantrex Technology 815-2524-02, 815-3524 manual Battery Cabling and Hook-up Configurations

Battery Cabling and Hook-up Configurations

Several smaller batteries can be connected to create a battery bank of substantial size. You can connect batteries in series (see “Battery Series Connection” on the right) or series-parallel(see “Battery Series-Parallel Connections” on the next page).

To make a larger battery bank, connect individual batteries with heavy cables. The actual size of the cable depends on whether the batteries are connected in parallel or series. Generally, the cable should not be smaller than the inverter cables—if the main cables are 120 mm2, the battery interconnects should be 120 mm2.

The best configuration is to connect the batteries in series-parallel. This requires additional cables, but reduces imbalances in the battery bank and can improve the overall performance. Consult your battery supplier for more information regarding the hook-up configuration required for your system.

Battery Series Connection

When batteries are connected with the positive terminal of one battery to the negative terminal of the next battery, they are connected in series. In a series configuration, the battery bank has the same Ah rating of a single battery, but an overall voltage equal to the sum of the individual batteries. See below.

12VDC	12VDC
100 Ah	100 Ah

for use by qualified personnel only.

24 V 100 Ah

Figure 20 Batteries Connected in Series

This guide

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