This article is generally about the Horrendous Oukitel P2001E and it’s YOUR app WONDERFREE. But Note the HA image above and read the updates and comments at the bottom… a Home Assistant solution, Grid Tie Inverters and more…
I use the Oukitel P2001E Lithium 2KW battery system and the app they have a third party created for them. No API, the app doesn’t work reliably – and there is NO support from either company. Here is my original article about generators and other things as well as the Oukitel.
I started all this at the beginning of 2026 and when I LAST updated this blog in July, there was no other option but to use the terrible “Wonderfree” app. I checked everywhere and no alternatives for the device and so chatGPT and I spent many hours to reverse the Bluetooth codes – with the alternative to continue to suffer the unreliable app. No one from Oukitel Power could then or can be bothered to help.
Should we have come up with an alternative to the app I had planned to cover here, meanwhile my advice was and is – if you can afford it, go for a Bluetti – I borrowed one for the months we didn’t have mains power and it is more expensive but the overall experience is/was WAY better. Also the Oukitel is supposed to support a pair of 400w solar panels for up to 800w out (40v – so well within its 60v voltage limits if you run a pair in parallel) but I could NEVER get more than 350w or so from the pair of 400w panels.
The Bluetti I borrowed would put out up to 600w from the same two parallel panels – and since then I’ve bought a Grid-tie inverter (offered by Amazon – well under 150 euros) to get the most out of the panels, 650w or more no problem (their theoretical max is 800w but they are not directly facing the sun) – so why couldn’t the Oukitel “engineers” achieve that.
The grid tie inverter works and over the whole summer pumped out 650W or more from our two 400w panels – more than enough for general daytime electricity use (except washing machine, dryer and 2 hot water tanks which ran on our generator until we got mains and now run overnight on cheap Spanish electricity.
Update July 14, 2026: As far as the Wonderfree app is concerned, after much research on – Wonderfree is don’t the clever bit, Wonderfree is “just” a React Native front-end that sits on top of the Acceleronix SDK. If this helps anyone – so be it… but ChatGPT and I spent a lot of time on this and failed in the end. See ChatGPT output in blue…
See what we have established:
- ✅ The cloud host identifies:
iot-ws.acceleronix.io - ✅ The AI host identifies:
ai-chat.acceleronix.io - ✅ Found the WebSocket connection code.
- ✅ Find which class authenticates (
Authorization=usr-...). - ✅ Confirm that the platform is rotating
productKeyin thedeviceKey. - ✅ Confirm that this is a generic Acceleronix / Quectel platform.
Update July 16, 2026: After a promising start, ChatGPT has given up decoding the Wonderfree App/Outitel communications. And that got me thinking – now I have grid power and the grid tie inverter for my solar panels, do I really need to use the battery regularly or put it in a corner and schedule monthly checks in HA to see if it drops below 80% charge – reserve it for major power outages (my UPS will run WiFi etc through the odd 1 minute or less outage).
Update 7 August 2026 – Grid Tie Inverters
I said I’d write more once I get to grips with my new 800w grid-tie inverter – well, it’s like this… the not-very-big-but-HEAVY unit plugs into my solar panels – two of them – 400w each – on separate cables – and then there’s a lead with a PLUG to plug into the grid – NO power to take back INTO the grid.. now if that sounds UTTERLY, UTTERLY counterintuitive and even dangerous – it seemed that way to me until recently. But it WORKS and depending on where you live, you can even return any excess to your network provider – but I won’t get into that and I don’t do that personally. All cables came with the inverter by the way.
There is a YouTuber in the UK who is streets ahead of me on legislation and probably more – and I stumbled upon his video this morning… it seems that with major caveats the UK government is about to pass legislation to make the use of these devices legal in the UK (not that this has stopped anyone as I understand it). Anyway, here is the link to the video. Worth checking out if you’re in the UK (I’m not). Quick takeaways – once the UK legislation is through it will be legal to buy a COMPLETE KIT and have it fitted by a qualified electrician (I’m not condoning it – just telling you what to expect). So it APPEARS that if you already have solar panels in the UK and fancy using one of these devices – it’s not entirely clear whether the law will be on your side? Good luck.
Update October 4, 2026 – The Oukitel Revisited – Home Assistant to the rescue
Months ago as you can see above, armed with network power, the Oukitel nightmare became a distant memory for me – until I just happened to check my “comments for approval” for the blog. If you have been following this because you have an Oukitel – meet your new best friend VICTOR..
Oukitel and Home Assistant – No More Rubbishy App – Wheeee
I was traveling this weekend and noted a pending comment from a gentleman who had NOT turned on the bluetooth but the local connection between the Oukitel P2001 and the LAN – and created a Home Assistant integration that worked for me straight out of the box anyway !! Thanks to Tailscale VPN on my phone and router, I can now access and control Oukitel from my phone – NO PROBLEM – ALLWHWH uses Home Assistant. I’ll let the readers comment on Victor – he put the link to the Github repository for his integration – and note the 1-CLICK installation in HA.
The image at the top of this article now shows a version of a HA Dashboard entry with HA Mushroom cards – not for everyone, but it will make me…