myenergy / zappi charger how have you found it? - Page 1
Forum section: electronics / general

author: Simon
author_rank: Unknown
timestamp: February 27, 2022, 08:09:39 pm
content: I ask as i am now rather frustrated with the whole thing. As it stands I ended up replacing the RCD board and the lock solenoid myself as they could not be bothered to hire a contractor company capable of keeping an appointment so I told them I did not want to deal with the contractor (greenio) anymore as they were wasting my time whilst I was perfectly capable of doing myself.Now lets look at the app. Pretty scant on clues as to how some features work and I now find that having changed settings they don't stick. My charge point says one thing and my app another. They could not even be bothered to put a basic timer function into the app. The only way to time control the zappi is to do it manually, with the car (assuming that works - spoiler the Ioniq app is even worse!) or set it to eco++ mode with a timed boost. Of course this only works if your solar is putting out less than 1.2kW as then it will just charge anyway. I have not worked out what the smart boost does as it just turned the charger on full pelt way before needed.Looking around they have plenty of marketing wank videos on youtube, one where an engineer talks about how they make it all in the UK while we are shown footage of him hand soldering SMD parts under a microscope. Admin staff tell us what a wonderful company it is to work for and one is shown stroking her dog, I mean that must seriously make the product better.....If you look at the company they only have two products, this pathetic EVSE and a device designed exclusively to screw the tax payer over by allowing baby boomers to waste electricity in the name of keeping it all to themselves as they were paid a fortune to generate it and heat water with it because gas cannot do that cheaper and allowing the electricity into the grid reducing the need for inefficient gas stations would be terrible as a gas boiler is more efficient at heating water than the electricity from a gas station.So overall I am not that impressed, is anyone else? did I miss something fantastic about this company other than "proudly made in Britain"

author: Faringdon
author_rank: Super Contributor
timestamp: October 15, 2022, 08:25:44 pm
content: I must admit i do like their stuffQuoteNow three, well five (because they have the Harvi and the Appi too)......but soon to be released...you saw it here first...is the "Libbi".....ive no idea what it is , but it must be aLithiumBattery (?)

author: Simon
author_rank: Unknown
timestamp: October 16, 2022, 09:13:18 am
content: They have 2 products, the others are ancillaries that on their own have no purpose. I now have had to have a new zappi as the first one kept tripping It's RCD even after the change. I was initially fooled because I had a Zoe which are infamous for tripping RCD's as I found on nearly all AC charge points I visited but when it started tripping with the Ioniq that has never tripped anywhere else I had to make another complaint. So new one fitted. The installer told me that I would have to contact them to remove it from my app. I thought he just did not know what he was talking about but yes, I can't remove it, they will have to, it's a joke.I finally got it to work as a timed charger without trying to use my solar....... I disabled the CT's, yep! so now less useful but doing what I want.... I would not touch anything from these people, they remind me of powerfault..... sorry power vault who were equally made in britain and equally shit (I suspect they used an arduino..... and I explained the errors in their measurements by making basic calculations and probably correct assumptions)

author: Faringdon
author_rank: Super Contributor
timestamp: October 16, 2022, 10:01:21 am
content: Thanks, i think all the battery storage vendors kit is the same, whoever you buy it from.........they all use pretty much the same power measurement circuitry....customers wouldnt by it if you increased cost so you could have super accurate power measurement....and its not thought to be needed anyway.......the few pennies per year of electricity that doesnt get accurately accounted for is not thought worthwhile for adoption of really accurate power measurement to be put inside the battery storage product. The accuracy they come with is generally considered perfectly satisfactory but not perfect.QuoteThats interesting...so "where is you solar going", would be the obvious question....also, "What night rate are you on, and who with, because i think i want to change to yours"I believe that any possible RCD tripping situations with Zappi are solved now.

author: Simon
author_rank: Unknown
timestamp: October 16, 2022, 05:33:15 pm
content: Quote from: Faringdon on October 16, 2022, 10:01:21 amNo, an ATmega2560 is much more expensive than say most ARM based micro's that have one or more ADC's working at at least 10x the speed and 2 more bits with hardware filtering and oversampling. If you are a nit that uses arduino then you have one low speed ADC and don't know that you need to filter results and if you tried on Arduino would fail badly at achieving.QuoteThats interesting...so "where is you solar going", would be the obvious question....also, "What night rate are you on, and who with, because i think i want to change to yours"My solar goes to the grid. I am on a car charging tariff so pay 7.5p at night and 35p during the day. Unfortunately for you my tariff is very bespoke to me. My supplier is an idiot where the left hand does not know what the right one is doing but every time I try to sort something out they either tell me all about how new this tech is and how complex it is or they tell me that they just don't make mistakes. So when they put me on a import/export combo that I am not sure they would want me on I decided it was not worth the hassle as I don't loose out.