Hi,
On this site i found table for battery voltage -
formatting link
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 1.75Is this table appropriate for battery - 2V, 300Ah, Gel VRLA GFMJ, ZTE ?