Neptune 13458-000, Руководство по установке и обслуживанию

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If an individual battery does not hold a voltage of a least
12.6 VDC open circuit after a full charge and a three-hour wait
period under no load, you could have a damaged cell and
require a battery replacement.
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If battery voltage climbs very rapidly under charge, then falls
rapidly after removing the charge, you could have a damaged
cell and require a battery replacement.
The same battery, Sun Xtender Part No. PVX-1040T, is used
in the 150 W and 220 W solar power options.
Table 26 provides the 120-hour load voltages during the
discharge cycle from full charge to 100% discharge to 10.5V at
25°C (77°F).
DOD (%) Battery Voltage (volts)
10 12.69
20 12.58
30 12.45
40 12.32
50 12.18
60 12.05
70 11.88
80 11.65
90 11.40
100 10.50
Table 26 – Battery Load Voltage by DOD
These voltages are averages. They vary slightly from battery
to battery even if they are of the same rating. However, they
are a good indicator of state of charge for AGM batteries. This
data is for newer batteries with relatively few cycles. An older
battery measures a lower voltage for a given DOD.
94 R900 Gateway Installation and Maintenance Guide
Appendix A Solar Power Information