Renogy DC-DC charger not charging

[Littleblackflash]

I stupidly left my inverter switched on and ran my LiPo battery flat. The battery protection kicked in and protected the battery which is now fully charged using solar. Since then, the DC-DC 50A is no longer charging when I drive the van. I'm not sure if its connected to the battery going flat or another issue.

I've checked the wiring to the DC-DC and I can't see any faults. This alternator trigger wire is 15v when the engine is running. The main cables to the alternator and battery are all fine.

Have I broken the DC-DC or is there a way of resetting it.

Thanks in advance

 

[Drive Wayne]

I stupidly left my inverter switched on and ran my LiPo battery flat. The battery protection kicked in and protected the battery which is now fully charged using solar. Since then, the DC-DC 50A is no longer charging when I drive the van. I'm not sure if its connected to the battery going flat or another issue.

I've checked the wiring to the DC-DC and I can't see any faults. This alternator trigger wire is 15v when the engine is running. The main cables to the alternator and battery are all fine.

Have I broken the DC-DC or is there a way of resetting it.

Thanks in advance

Run the battery down a bit then see if the DCDC starts performing. It won't do much with a full battery.

 

[Littleblackflash]

I should have said I tried that. I ran the battery down to 80% using the kettle a few times.

I'm seeing a slow flashing red light on the DC-DC, indicating the alternator is connected. But I'm not seeing the constant red light which indicates its charging.

 

[Drive Wayne]

I should have said I tried that. I ran the battery down to 80% using the kettle a few times.

I'm seeing a slow flashing red light on the DC-DC, indicating the alternator is connected. But I'm not seeing the constant red light which indicates its charging.

Is there an App for the Renogy? I've only ever used the Victron gear...

 

[Dellmassive]

Have you got the Renegade bluetooth app running and connected?

Have you tested with a multimeter that you've got starter battery voltage on one side and leisure battery voltage on the other side?

 

[Littleblackflash]

I have the Renogy App running on a BT2. I've not heard of a Renegade App, is that something new?

With a Multimeter I checked the starter battery voltage with the cable disconnected from the DC-DC. It was a normal ready about 13volts, I can't remember exactly.
I did the same with the leisure battery and again recorded an expected result.

In the app, there is a setting for Undervoltage recovery. I can't edit this value but when checking the starter battery voltage, it was in excess of this limit. I'm away from the van now so I can't see the value.

 

[CAB]

I have the Renogy App running on a BT2. I've not heard of a Renegade App, is that something new?

With a Multimeter I checked the starter battery voltage with the cable disconnected from the DC-DC. It was a normal ready about 13volts, I can't remember exactly.
I did the same with the leisure battery and again recorded an expected result.

In the app, there is a setting for Undervoltage recovery. I can't edit this value but when checking the starter battery voltage, it was in excess of this limit. I'm away from the van now so I can't see the value.

I'm guessing Renegade was an autocorrect error.

 

[Littleblackflash]

I found some time last night to have a look at this again.

I've connected a power supply to the input side of the DC-DC controller and gave it 15volts. My hope was to ensure the input voltage was high enough that the DC-DC will come out of a safe mode and start allowing the alternator to charge the leisure battery. This worked to a point. With the power supply disconnected, the DC-DC is now going into charging mode (red light constant), but it's only charging at 1w ~ 0.04A. It still won't charge at 50A (Battery is 50% charged)

Any ideas?

 

[Littleblackflash]

anyone??