My system battery status shows as battery "bad," what should I do?

This article details the different battery status report conditions and when to clear the health odometer.

Product applicability

  • Legacy: R920, R247-E (older revision)
  • E Series: R920-E, R829-E, R820-E, and R247-E
  • F Series: R920-F, R829-F, R820-F, and R247-F
  • G Series (solar only): SC315-G, R829-G, R820-G, and R247-G

Battery Status

The general health of the battery is tracked by the system's “odometer.” If the battery status is reported as "bad," the odometer has determined the battery's health is too poor to operate reliably and should therefore be replaced. Battery health is evaluated by considering things like the total number of charge and discharge cycles, and the amount of time spent in a low state of charge.

When the system’s batteries require replacement, it is recommended that the original manufacturer and model of batteries be used. Always replace both batteries at the same time, if applicable.

E/F Series Odometer Reset

The odometer is reset by powering up the energy management system (EMS) while its "Set" button is pressed and held down using the following procedure:

  1. Install the new batteries as per the associated user manual.
  2. Twist and pull apart the yellow rubber fuse holder leading to left side battery.
  3. Ensure the fuse holder leading to the right side of the battery is connected.
  4. Disconnect the positive terminal of the right side battery.
  5. Press and hold down the EMS's “Set” button.
  6. While continuing to hold down the “Set” button, connect the positive terminal on the right side of the battery. **Note: for the F Series, it is sufficient to hold the positive ring terminal against the positive battery terminal.
  7. While continuing to hold down “Set” button, wait for "zero" to appear.
  8. Once "zero" appears, release the “Set” button.
  9. Reinstall the right side positive battery terminal, and reassemble the left side fuse holder.

G Series Odometer Reset:

The odometer is reset by powering up the system while the "Set" button is pressed using the following procedure:

  1. First, remove the solar fuse, and then remove the battery fuse.
  2. Install the new battery as per the associated user manual.
  3. Press and hold down the EMS's “Set” button.
  4. While continuing to hold down the “Set” button, reinstall the battery fuse.
  5. While continuing to hold down the “Set” button, wait for "zero" to appear.
  6. Once "zero" appears, release the “Set” button.
  7. Reinstall the solar fuse.

 

The battery health meter inside the system is now reset (i.e. it knows that new, healthy batteries have been installed). The battery status should read 9OOd (good) if the new batteries are 12.6V or higher, or char (charge) if they are between 11.7 and 12.6 volts.