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Shouldn't be a PV voltage issue. The MPPT on these units is rated at 60-450v DC. I've got an Epever 100A 200v MPPT charge controller coming (I've had great experience with the lower power Epever controllers in the past), but I'm a bit annoyed that it has come to this.

Yes, I seem to get better energy transfer into the batteries using a dedicated external MPPT charger, and with much better control over the charging algo. Kinda makes sense really. In an AIO, the path looks like this: PV input > DC-DC HV buss converter (losses) > DC-DC battery voltage...

Have a look on YouTube for unsold Chinese EVs! There are thousands, if not tens of thousands of brand new EVs sitting in huge lots in China. Some are approaching 5 years old and now obsolete - not to mention the fact that the batteries are probably completely rooted from sitting for so long...

Energy mate works quite well, once you finally get the AIO to communicate with the cloud (subject for another post lol), but there are still a couple of wrinkles that need ironing out. Firstly, there is no ability to set daylight savings time, so your log/data will either be correct, or 1 hour...

Not sure if anyone else has noticed this but the Lifepo4 'User' battery charging algo is terrible on (cheaper) AIO's. Not sure if the DEYE and SRNE are any better.. They typically have a Boost/Bulk charge voltage and a Float voltage - which is fine in theory.. However, the problem is, there's...

Hi guys, I have a new(ish) 3 months old PIP3024GEW AIO. For the first few months, I was relatively happy with the performance (basically just using the inverter function). At that point, I was not using the inbuilt MPPT charger because my small PV array couldn't produce the minimum voltage for...

Further to this.. Below is an audio spectrum plot (taken from a phone) near the AIO. When the MPPT switching goes parasitic/spurious, You can see well defined audio peaks across the audio spectrum and increased noise above 20Khz. Unfortunately, my phone mic only detects up to about 25Khz, but I...

Hi guys, I suspect this might be a bug in the MPP firmware?? I have a PIP GEW 3024 AIO. The system is completely off grid and has the following attributes: Battery - 8 cell x 300ah Lifpo4 BMS - Daly 8 cell Solar - 5 x 415w panels in series. Inverter battery profile - 'User' (as all of the...

For anyone following this thread.. I've been in contact with MPP. MPP comments - "Bulk charge is not activated unless the pack voltage drops to 25v" So basically, unless you discharge your pack to 3.125v per cell (or about 15% SOC) overnight, you will never activate Bulk charge. This Bulk...

Does the SRNE let you set the re-boost trigger voltage? According to their support support, the MPP inverters are hard set in firmware to 3.125v per cell. My battery rarely goes that low overnight, so the AIO rarely enters boost mode.

I noticed your system only cycles up to 54v most of the time, with occasional peaks to 54.5v. Assuming you're using a 16 cell battery, that is only charging up to the float voltage of ~3.4v p/cell too. Be interesting see how out of balance your pack is if you took the charge voltage up to 3.55v...

Ahh, that makes sense .. The SRNE obviously triggers a bulk charge if the pack voltage drops to at least 52.3(ish) volts or 3.265(ish,) volts per cell, according to your charge chart. What is the highest (low) voltage you've seen overnight and still seen a bulk charge the following day? 🤔 This...