Emergency Exit Lighting Batteries: Backup
Can I substitute a lower Amp Hour (Ah) battery with a higher one?As long as the battery that you are substituting is the same voltage, you can use a higher capacity (higher Ah) battery than the original one. The reverse is also true. Using a battery with a higher Ah will improve the device's running time on a single charge. This feature is important if the power frequently goes out or is out for long periods of time. However, the higher the Ah is on a battery the bigger (physically) it will be. Make sure the dimensions of the new battery will fit in the designated space. You must also keep in mind that the charge time for a higher Ah battery will be longer than a lower Ah battery.
Can I store my Sealed Lead Acid battery?Most emergency lighting batteries are Sealed Lead Acid (SLA) batteries. All SLA batteries self-discharge. If the battery is not recharged periodically, its full capacity may not be recoverable. Typically, SLA batteries self-discharge 3% every month. We recommend you check and recharge every three months. SLA batteries should never be stored longer than six months without being recharged.