Huawei iSitePower-M MAP05A1 - Page 203

Conditions for Judging Overdue Storage
It is recommended that batteries not be stored for a long period. They should be
used soon after being deployed onsite. The batteries should be stored according to
the following requirements.
Table 12-3 Lithium battery charge interval
Required
Storage
Temperature
Actual Storage
Temperature
Charge Interval Remarks
–10°C < T ≤
+55°C
T ≤ –10°C Not allowed Not reaching the
time for recharge:
Use the batteries
as soon as
possible.
Reaching the time
for charge: Charge
the batteries.
The total storage
duration should
not exceed the
warranty period.
–10°C < T ≤ +25°C 15 months
25°C < T ≤ 35°C 9 months
35°C < T ≤ 55°C 6 months
T > 55°C Not allowed
1. Dispose of deformed, damaged, or leaking batteries directly irrespective of
how long they have been stored.
2. The storage duration starts from the latest charge time labeled on the battery
package. If a battery is
qualied after being charged, update the latest charge
time on the label (Next charge time = Latest charge time + Charge interval).
3. The maximum storage period is three years, during which batteries can be
charged for a maximum of three times. For example, a battery can be
charged every 8 months for three times or every 12 months for three times.
Dispose of batteries if the maximum storage period or charge times are
exceeded.
4. If a lithium battery is stored for a long time, capacity loss may occur. After a
lithium battery is stored for 12 months at the recommended storage
temperature, the irreversible capacity loss rate is 3%–10%. Batteries may fail
the discharge acceptance tests when their capacity after storage is less than
100% of the rated capacity.
Inspection Before Charge
1. Before charging a battery, you need to check its appearance. Charge the
qualied battery or dispose of the unqualied one.
2. The appearance is qualied if it is free from the following symptoms:
– Deformation
– Shell damage
iSitePower-M (MAP05A1, MAB05B1)
User Manual 12 System Maintenance
Issue 06 (2023-04-24) Copyright © Huawei Digital Power Technologies Co., Ltd. 194