MLI Ultra 12/1250, 24/1250
– User and Installation Manual
21
6. BUILDING A BATTERY BANK
The MLI Ultra supports 12V, 24V, 36V and 48V systems.
Requirements:
•
Only create battery banks with batteries of the same type and capacity.
•
The batteries have the same product code and software version. Do not mix with other models.
•
Make sure that all batteries are fully charged before creating a battery bank to ensure balancing is
optimized.
•
Use properly sized fuses and wiring.
•
Keep the cables between the batteries as short as possible.
•
All battery-to-busbar cables should be of the same length.
•
Install the batteries as close as possible to the charger.
•
Mastervolt recommends one charger for batteries that are connected in series.
•
It is best practice to label the batteries (e.g. Primary, Replica1, Replica2).
Series and parallel connections
Note:
in the following drawing, the fuses are not depicted. For safety reasons, always use properly
sized fuses in the positive cables of batteries in parallel connections.
2 x 12V parallel = 12V / 200Ah
2 x 24V parallel = 24V / 100Ah
2 x 12V series = 24V / 100Ah
2 x 24V series = 48V / 50Ah
3 x 12V parallel = 12V / 300Ah
3 x 24V parallel = 24V / 150Ah
3 x 12V series = 36V / 100Ah
4 x 12V parallel = 12V / 400Ah
4 x 24V parallel = 24V / 200Ah
2 x 24V series/parallel = 48V / 100Ah
Figure 10: Simplified diagram for battery bank DC connections