I noticed the firmware version on my charger has recently updated to v2.8.0
Not sure when it happened because it never informed me.
I can’t find any information on this community about what is included in new releases, new features, bug corrections etc.
Is there somewhere we can view the release notes?
I’ve just had an E2 Plus charger installed for my Polestar 4 here in Sydney. My first charge last night went smoothly with no issues.
However, I noticed the firmware version is 2.6.2, which seems quite a bit behind the latest version 2.8.0. which habash has. I was under the impression that the latest firmware would be downloaded during installation. Should I contact support to have this updated?
Also would like these release notes made public, mine has had 2 firmware updates in the last 4 months so curious to know the changes that were made
I agree, not all updates are for the better. They fix one issue but make another issue. At least if we are informed of an update, we can keep an eye on what’s going on. My car wouldn’t charge at all the other day then realized they made an update. I cut power to the unit then rebooted it and it started charging again.
Now we have another issue where it used to charge at 7.4kw before the update but now only charges at 6.6kw.
Mine has also been charging at a reduced rate in recent weeks. The app states the reduced rate is due to charger temperature. I had (and expected) this issue at the height of last summer, not at the low to mid 20° temps of the past few weeks. I think they’ve played with the threshold. Does this mean there is an issue with the hardware’s ability to supply the full advertised current?
No, it’s due to the firmware update. They are working on it and quote “they will be looking at a new firmware in the coming months to fix this”
That is good news. Hopefully they can sort it out soon.
Mine is also charging slower, support saying its because of temperature. E2 Datasheet says operating temperature -25c to 55c (Charging current may limit at higher temperatures). I wouldnt think my charger in the garage charging overnight in melbourne (so approx 15-20c ambient temp) would need to be slowing down. They need to get this sorted ASAP, once it actually gets hot here i fear the charger will be basically useless
Easier to blame it on temperature rather than admit something in the firmware slowed charge speed. Like when it wouldn’t charge over 3.4kw on solar, they blamed byd but then pushed through a firmware update and meraculously it charged at the full 7.4kw on solar. Amazing Hey.
Has anyone received any updates on this issue? No matter what the ambient temp my charger ramps down to 5.4kW within minutes of charging
That’s a significant drop from the 7.4kW they claim.
Yes, I have encountered the same issue. This problem appears to be widespread.
Hi all.
We have started rolling out an update to all E2 chargers which reduces the extent of the thermal turndown. This is done gradually across the fleet over a few weeks.
Thank you for the update Tom.
Will you be providing release notes for this new update so that we as a community are informed about what is included in this new release; the fixes it addresses and new features you may be introducing?
No idea what’s happening Tom but I just checked my firmware and it’s be rolled back to an old firmware version. My charger is showing 2.6.2.8BBE272. I’ve been on 2.8.0 for months that finally fixed my solar charging for my BYD.
I’m totally confused how Evnex runs the fleet. No notification no discussion. Just upgrades and downgrades firmware as and when you feel like it without notifying the client. Never had a company do this with me.
Btw I’m not the type to post on forums asking for support but I’ve emailed support, left voicemails and its been radio silence for over 2 weeks. I don’t know what’s going on at Evnex, I was very pleased with my support experience in the past. It seems to have fallen off a cliff.
@TomRose Hi Tom, any word on when these updates will be completed? I’m still on 2.6.6.2DCB7D9. My car that used to charge from 15% to 100% in 8ish hours is now taking over 10 hours. Getting to the point where I’ll submit a warranty claim and get a refund as the product doesn’t do as advertised.
Have you had any luck?
Still no luck.
I got an email earlier this week that they were going to upgrade my charger to the latest release.
But still no change.
I have continued calling and leaving messages on their support line.
Very frustrating.
I’ve gone from being a big advocate for Evnex with my colleagues and friends to recommending they explore other options.
I’m seeing similar behaviour on my unit as well.
To be fair, support has been responsive on my case - they’ve pushed firmware updates, asked for detailed info, and acknowledged there are issues they’re working through.
That said, the charging performance still isn’t behaving as expected. I’m seeing the charger briefly reach higher output (6.7kw) before dropping back and not sustaining the expected rate, even when there’s plenty of headroom - which suggests the issue isn’t fully resolved.
It’s also a bit confusing seeing reports of firmware being rolled back while others (like myself) are on newer versions, without any visibility on what’s changed between releases.
Given these updates directly impact core charging behaviour, I would expect clearer communication and release notes so customers understand what’s being deployed and why.
I appreciate the work being done, but at the moment there’s still a gap between expected performance and what’s being delivered. More transparency and consistency would go a long way.
Thanks for sharing Dan
I agree with you the support is great when you get it The support strategy being adopted by Evnex of not communicating changes and not notifying the user of updates and giving the user the choice is a concern
My charger has now been upgraded to 2.8.6. I’m told it’s the latest version Is this the same version you are running?
Yep - I’m on the same version (2.8.6.168A096)
I’ve run a few sessions on this firmware now, including one last night, and I am seeing some improvement compared to before. The charger is definitely sustaining output more consistently - from the session data it was holding around ~5.6–5.8 kW for the majority of the charge, rather than dropping off much earlier like it was previously.
That said, it’s still not reaching or sustaining the expected ~7.2 kW. The highest I’ve seen is around ~6.7–6.8 kW, but that appears to be brief and not maintained. I’m also seeing this behaviour even at lower SOC levels (e.g. starting in the ~60% range), so it doesn’t look like normal tapering as the battery fills.
I’ve compared this across multiple data points (Evnex app, car app, and Enphase), and while the exact figures vary slightly between them, they all show the same overall pattern - improved stability, but a lower sustained charge rate than expected.
Even accounting for lower supply voltage, the sustained output still appears below what the unit should be capable of, which suggests there may still be some form of limiting or derating occurring that hasn’t been fully resolved yet.
Agree with you as well on the communication side - given these updates directly impact charging behaviour, clearer release notes and visibility on what’s changing between versions would make a big difference.