More fun with Renogy MPPT and LFP

Almot wrote:
Follow-up. Can live with Renogy controller and the app but it sucks.

Steve, there are 2 tabs in the app Settings screen: Battery Parameter and Load Parameter. Tap the Battery Parameter. My Renogy is Rover 30, maybe yours doesn't have these settings?

On to testing the controller.

There is an LV disconnect and an LV "alarm" - a single beep.
High Voltage protection doesn't seem to work.
Boost timer (set to 10 minutes for LFP battery) doesn't seem to work either.

1) Over-discharging.
Set Low Volt Warning to 12.7, Discharge Limit to 12.6, Over Discharge to 12.6. Probably "Over Discharge" is LVD.

Tapped Read on the app - it doesn't tell the truth until it talks to controller first, double-checked that the settings on the actual controller are same as in app - some were not, had to set them on the controller.

After getting down to 12.7-12.6 and sitting there for an hour it beeped once - wouldn't have heard it if TV was on - and disconnected.

2) Over-charging
Hooked up 15A DC charger to where PV should be connected.
Boost set to 14.6, High Volt Disconnect to 14.8, Charge Limit to 14.8 (don't ask me how HVD is different from Charge Limit).

Voltage climbed to 14.6, then I left it unattended, the Load got disconnected and Renogy kind of "locked" - blinking "high voltage" with display reading 13.3, charging current less than 0.5A.

Unplugged DC charger, Renogy display immediately reads 14.8, then goes down to 14.4. App reports that the highest voltage was 15.5.

Battery survived - yay!

I think that DC fridge did the disconnect - there is no real manual for the fridge but DC devices often have 15.5V protection.