Information handling system including a memory device capable of being powered by a battery

1. An information handling system (IHS) comprising:

a processor;

a memory module coupled to the processor via a memory controller on a memory controller board, the memory module, including a memory device;

a power source on the memory controller board, coupled to the memory device, for supplying power to the memory device;

a first battery on the memory controller board, coupled to the memory device, for supplying power to the memory device;

a second battery, located on the memory module and coupled to the memory device, for supplying power to the memory device;

a switching circuit coupled to the memory device, the power source, the first battery, and the second battery, for:

in response to determining that the power source is unavailable to supply power to the memory device, supplying power from the first battery; and

in response to uncoupling the memory device from the memory controller, supplying power from the second battery; and

a charging circuit residing on the memory controller board and capable of charging and discharging the first and second batteries in response to an instruction from the memory controller.

2. The IHS of claim 1 , wherein the first battery's capacity is greater than the second battery's capacity.

3. The IHS of claim 2 , wherein the first battery's capacity is suitable for supplying power to the memory device while the IHS exhibits reduced operability, and the memory module is coupled to the IHS.

4. The IHS of claim 3 , wherein the first battery is capable of supplying power to the memory device for about 72 hours.

5. The IHS of claim 2 , wherein the second battery's capacity is suitable for supplying power to the memory device while the IHS exhibits reduced operability, and the memory module is removed from the IHS.

6. The IHS of claim 5 , wherein the second battery is capable of supplying power to the memory device for about 4 hours.

7. The IHS of claim 1 , wherein while the first battery is conditioned, the second battery supplies backup power to the memory device.

8. The IHS of claim 1 , wherein while the second battery is conditioned, the first battery supplies backup power to the memory device.

9. The IHS of claim 1 , wherein the switching circuit resides on the memory module.

10. A method comprising:

in response to determining that a power source is unavailable to supply power to a memory device included on a memory module, supplying power from a first battery located on a controller board;

in response to uncoupling the memory device from the controller board, supplying power to the memory device from a second battery located on the memory module; and

charging and discharging the first and second batteries by a charging circuit residing on the memory controller board in response to an instruction from a memory controller.

11. The method of claim 10 , wherein the first battery's capacity is greater than the second battery's capacity.

12. The method of claim 11 , wherein the first battery's capacity is suitable for supplying power to the memory device while an IHS, that includes the memory device, exhibits reduced operability, and the memory module is coupled to the IHS.

13. The method of claim 12 , wherein the first battery is capable of supplying power to the memory device for about 72 hours.

14. The method of claim 11 , wherein the second battery's capacity is suitable for supplying power to the memory device while an IHS, that includes the memory device, exhibits reduced operability, and the memory module is removed from the IHS.

15. The method of claim 14 , wherein the second battery is capable of supplying power to the memory device for about 4 hours.

16. The method of claim 10 , wherein while the first battery is conditioned, the second battery supplies backup power to the memory device.

17. The method of claim 10 , wherein while the second battery is conditioned, the first battery supplies backup power to the memory device.

18. The method of claim 1 , wherein a switching circuit selectively supplies power to the memory device from the power source, the first battery, or the second battery.