Charging batteries properly requires administering the right amount of current at the right voltage.
The original instructions for your charging equipment should be referenced for proper charging.
Here is list of helpful items to remember when charging your battery.
Compensation for battery temperature above or below 25°C/77°F can be made by subtracting 0.005 volts per cell for each 1°C above 25°C or by adding 0.005 volts per cell for each 1°C below 25°C. Add .028 volt per cell for every 10° below 77° F and subtract .028 volt per cell for every 10° above 77° F.