Huawei ESS-240V12-9AhBPVBA Series Quick Installation Manual page 13

A 15 kVA/20 kVA UPS with long backup time requires serial connection of two battery packs in each
group. A maximum of four groups with eight battery packs can be connected in parallel. The text
uses four battery packs in two groups as an example. If more than four battery packs need to be
connected, refer to the connection method illustrated on page 10.
Connecting Cables to Battery Packs for a Single UPS2000-G-15 kVA or
UPS2000-G-20 kVA
When a UPS2000-G-15kVA/20 kVA requires two battery packs, set the Max. current parameter less
than or equal to 2.0 A.
BATT.±240 V DC port
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UPS