They are usually sealed maintenance free.
Lead calcium battery voltage.
The typical lead acid charging voltage is between 2 15 volts per cell 12 9 volts for a 6 cell battery and 2 35 volts per cell 14 1 volts for a 6 cell battery.
The ideal charging voltage for a calcium battery is 14 8v for the recombination process to properly occur.
Terminal voltage the open circuit voltage no current flowing of a fully charged cell depends on its type but will be 2 1v to 2 3v 12 6v to 13 8v for a 12v battery.
The key difference between lead acid and calcium batteries is that the lead acid battery has a lead electrode inside the battery whereas the lead calcium battery has calcium along with lead as the electrode inside the battery.
The above indicates that your trickle charge will not deliver enough charge to completely recharge you battery.
If the tops of the metal plates are above the liquid surface check the manufacturers guidelines and then top up the cell with battery water or deionised water.
Because of the use of lead calcium alloy for the electrode in lead calcium batteries they have a low self discharging effect and a longer service life than the lead.
There are two main methods for determining the state of charge for lead acid batteries.
If the voltage is measured with.
A calcium battery is a still a lead acid battery.
Calcium replaces antimony in the plates of the battery to give it some advantages including improved resistance to corrosion no excessive gassing less water usage and lower self discharge.
Remove the vent caps on the top of the battery and use a flashlight to check the level of the liquid in each cell.
Check the level of electrolyte in each cell.