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4 Maintenance

The engineering personnel who perform the following operations must have received professional training.
Before operating and maintaining the V-Power S14, wear anti-static work clothes, anti-static gloves, and wrist
straps, and remove conductive objects such as jewelry and watches to avoid electric shock or burns.

All V-Power S14 internal maintenance work requires insulated tools and should be performed by personnel who
have received relevant training.

When operations such as installation and maintenance only involve the V-Power S14, the output switch of the
V-Power S14 should be kept open. When the inverter is involved, the output switch of the V-Power S14, the DC
switch of the inverter, and the circuit breaker from the inverter to the grid should be kept open.
4.1 V-Power S14 Storage

The recommended storage temperature is 15
℃
~35
℃
.

V-Power S14 performance degradation after long-term storage, please shorten shelf time as possible
as you can.

Charge before using to recover capacity loss of self-discharge during storage and transport.

Storage V-Power S14 should be at 40%-50% SOC when the V-Power S14 is not used for a long time.

Storage batteries over 40°C or under 0°C will reduce battery life. Store the V-Power S14 in a dry and
low-temperature, well-ventilated place.
If the battery is not used for a long time, the V-Power S14 must be charged at regular intervals. The
charging requirements are as follows
：
Table 8. V-Power S14 Charge Requirement in Storage Status
Storage Temp. Charge Period Charge Requirement
20
℃
~30
℃
Every 6 months 1.Charge by 0.2C to 100% SOC
2.Discharge by 0.2C to 0% SOC
3.Charge by 0.2C to 40%~50% SOC
0
℃
~20
℃
or 30
℃
~40
℃
Every 3 months
4.2 Monthly Maintenance
Users should conduct a visual inspection of the V-Power S14 monthly. Please refer to the following table
for monthly maintenance.