User Manual

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discoverbattery.com
885-0001 REV C
▲ CAUTION
Do not install batteries in series. Select the appropriate
AES battery model for the voltage of your system.
▲ CAUTION
Intentional bypassing of BMS to operate battery outside
maximum and minimum limits voids warranty.
3. BATTERY BANK SIZING
3.1 Depth of Discharge
Conventional lead acid batteries should be designed to discharge only 50% of their nominal capacity on a
regular basis.
Lead Acid Battery Bank
500Wh usable
1000Wh Installed
50% Depth of Discharge means only half
of the capacity of the battery is used.
Discharge
50%
100%
0%
Figure 1. Lead Depth of Discharge
The gure above shows clearly that the size of a lead acid battery bank should be twice the size of the
installations energy requirements to maximize the battery’s life.
AES batteries will tolerate discharge cycles that consume 100% available capacity of the system. The capacity
of a Lithium battery is related to temperature and discharge rates, Discover recommends sizing an AES battery
system for 80% DOD.
3.2 Run Time and Size
The total number of AES batteries installed determines the overall battery backup energy and similarly the
amount of time the inverter can supply AC output power. Recharge time of the battery system will also increase
with the overall size of the battery bank.
3.2.1 Discover AES Battery Bank Size Limitations
The number of AES batteries installed with an inverter system is limited to 10 units.
▲ CAUTION
Installations of more than 10 AES batteries with one
inverter cluster are not supported.
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