What is the battery backup for 48V battery ?

Hi,
On this site i found table for battery voltage - http://www.solar-electric.com/deep-cycle-battery-faq.html
State of Charge    12 Volt battery    Volts per Cell
100%    12.7    2.12 90%    12.5    2.08 80%    12.42    2.07 70%    12.32    2.05 60%    12.20    2.03 50%    12.06    2.01 40%    11.9    1.98 30%    11.75    1.96 20%    11.58    1.93 10%    11.31    1.89 0    10.5    1.75
Is this table appropriate for battery - 2V, 300Ah, Gel VRLA GFMJ, ZTE ?
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Depending on how strong the chemistry is.
-Bob
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