Huawei ESS-240V12-9AhBPVBA04 - 3.3 Recharge Method of the UPS2000-G-15 kVA;20 kVA

4. The warehouse keeper should collect data about battery storage status every
month and recharge batteries that have been stored for three months in a
timely manner.
3.3 Recharge Method of the UPS2000-G-15 kVA/20 kVA
3.3.1 Battery Pack Recharge Control Parameters
The following describes how to use the UPS2000-G-20 kVA to recharge a battery
pack.
1. Set charging parameters for the UPS based on the number of battery packs
connected in parallel in positive and negative battery strings.
Device Charge Voltage (V) Charge Current (A/
PCS)
UPS2000-G-20 kVA 576±5 1±0.1
NO TE
For example, if two battery packs are connected in parallel in the positive and
negative battery strings respectively, the battery pack capacity is 9 Ah, and the charge
current
coecient is 0.1, the charge current is calculated as follows: Charge current =
2 (Number of battery packs) x 9 (Battery capacity) x 0.1 (Charge current coecient) =
1.8 A. The charge current of a battery pack is associated with the battery capacity. A
maximum of four battery packs can be connected in parallel in the positive or
negative battery string. Table 3-1 lists the charging time.
2. The time requirements for using the UPS to recharge battery packs are as
follows.
Table 3-1 Charging time
Battery
Pack Model
Storage Duration
(Month)
3 4 5 6
ESS-240V12
-9AhBPVBA
04
Charging time (hour) ≥ 3 ≥ 4 ≥ 5 ≥ 6
ESS-240V12
-7AhBPVBA
04
Note: Battery packs that have been stored for less than or equal to three
months do not need to be recharged.
3.3.2 Battery Pack Recharge
ESS-240V12-(9AhBPVBA04, 7AhBPVBA04) Battery
Pack
Quick Guide 3 Transportation and Storage Requirements
Issue 02 (2022-06-30) Copyright © Huawei Digital Power Technologies Co., Ltd. 13