Royal series batteries use specially alloyed calcium-lead, which leads to deficient levels of “electrolyte decrease”. Therefore, supplement distilled water is not needed if the charging system remains error-free. Special liquid-gas separators keep the electrolyte inside. An electrolyte is any substance containing free ions that behave as an electrically conductive medium. These separators are also used between a lead acid battery’s positive and negative plates. PLC Technologies is the largest supplier of Royal Series batteries in a wide variety of size from 26AH to 100AH, Deep Cycle, Lead Acid and more.
| Part # | Rating | Voltage | Design Life |
| NT50 | 26AH | 12VDC | 5 Years |
| NS40 | 35AH | 12VDC | 5 Years |
| NS60 | 45AH | 12VDC | 5 Years |
| NS70 | 65AH | 12VDC | 5 Years |
| 1150K | 105AH | 12VDC | 5 Years |
| DC24 | 70AH | 12VDC | 5 Years |
| DC27 | 80AH | 12VDC | 5 Years |
| DC31 | 100AH | 12VDC | 5 Years |