Royal Batteries – Semi-Sealed Maintenance Free Batteries.
Royal batteries are calcium-lead acid batteries, which leads to extremely low levels of electrolyte decrease. There is no need to supplement distilled water if the charging system remains error-free. Special liquid-gas separators keeps the electrolyte inside.
Electrolyte is any substance that behaves as an electrically conductive medium. Separators are also used between the positive and negative plates of the battery prevent any short circuit through physical contact.
No filler caps are required therefore there is no electrolyte contamination, overwatering or damage in use. The unique wrought lead-calcium grid design means less internal corrosion and efficient current conductivity for more power and a longer life. It also cuts gassing, resists overcharge, heat and thermal runaway.
These batteries have a consistent starting performance which have is highly durability. It is a good quality maintenance free batteries with the advantage of being guaranteedfor 12 months.
Terms and ratings
Cold cranking amperes (cca) is the amount of current a battery can provide at -18 °C. The rating is defined as the current a lead-acid battery at that temperature can deliver for 30 seconds and maintain at least 1.2 volts per cell (7.2 volts for a 12-volt battery) It is a more demanding test than those at higher temperatures.
Hot cranking amperes is the amount of current the battery can provide at minus 26.7 °C. The rating is defined as the current a lead-acid battery at that temperature can deliver for 30 seconds and maintain at 1.2 volts per cell (7.2 volts for a 12-volt battery)
Reserve capacity minutes, also referred to as reserve capacity, is a batteries ability to sustain a minimum stated electrical load, it is defined as the time (in minutes) that a lead-acid battery at 27°C will continuously deliver 25 amperes before its voltage drops below 10.5 volts.
The hydrometer measures the density, and therefore indirectly the amount of sulfuric acid in the electrolyte. A low reading means that sulfate is bound to the battery plates and that the battery is discharged. Upon recharge of the battery, the sulfate returns to the electrolyte.