Can I Use 7ah Battery Instead Of 9ah. Run 9ah batteries flat will take longer and might upset it. Any bigger and the battery will physically not fit into the device as the physical dimensions will be different.
The voltage of the original and the replacement has to be the same. Ad Complete selection of SLA Batteries 2V - 4V - 6V - 12V at BatteryMart. Boogiem the 9ah wont last longer nor hold a charge longer than a 7ah battery.
But - the 12Ah battery is 13 wider and that will not fit in the box.
I have the cyberpower 900VA ups. In this instance the 7Ah is given as the 20 hour rate this tells us that at a constant discharge over 20 hours the battery will produce 035 amp per hour 20 hours x 035 7Ah. Run 9ah batteries flat will take longer and might upset it. The higher a batterys amp hour rating is the longer the battery.
