Energy-Jason

Grok says that it's ok for a game or a raffle, but no serious crypto.

https://ivanludvig.dev/tech/google-random

Stick with reputable known good suppliers.
https://powerforum-store.co.za
https://www.diygeek.co.za My 2x Narada batteries and and 1st growatt spf5000es and Sunsynk 5k inverter came from DIYGEEK running more than 5 years now with zero issues
https://segensolar.co.za Need an installer account to buy, some bargains but mostly a bit pricey
https://www.solarwaysuppliers.co.za I buy my panels and mounting systems from them, best prices online open to public
https://acdc.co.za Expensive, but can go there in emergency if desperate for something.
https://www.liteglo.co.za Electrical supplies online - nationwide delivery quick and their prices are really good, they based in JHB and I am in Cpt often get supplies from them cheaper than suppliers in cape town even after adding their courier fees.

Hope you well. Where are you located?
Jay

Careful now boet, I have a rural acquaintance with 5x US3000Cs that he has "hardly used" for 4 years, kept at 100% SoC @ 35-55 degrees C. After introducing him to the wisdom of Powerforum and Battery University, he said "So my batterye het blykbaar grondpad gery". 😆

@HennieL
and the forum, We completely understand the scepticism many members have had frustrating experiences with Pylontech support in the past, and those concerns are valid.
On a positive note, Pylontech via Solar Deity and Powerforum is actively working to fix they're after sales support and technical services in South Africa.
This is genuinely encouraging and refreshing, especially considering how small our market is compared to the rest of the global renewable energy sector. They are willing to engage directly with the community, which shows real commitment.
Powerforum is also engaged directly with Pylontech in China to help facilitate the restoration of their reputation here.
Our experience with Solar Deity so far has been very positive they are committed to delivering proper after-sales support and educating both installers and end-users.
Many users argue “But the BMS is supposed to protect the battery.” This is fair, however the older BMS units in the US-series had limitations.
They could prevent catastrophic events but were not always 100% effective against long-term cell stress from sustained high C-rates, poor thermal management, or frequent high-load cycling.
Newer BMS technologies have improved significantly, and Pylontech’s latest protocols have become a standard that many other brands follow.
South Africa’s extreme heat and cold conditions also played a big role these are not favourable for older lithium technology.
Combined with limited knowledge of lithium systems at the time among consumers, installers, and distributors, some very bad decisions were made around system sizing and configuration.
These were not directly the fault of the manufacturer.
On top of that, after-sales support was never handled directly by Pylontech it was left to their local distributors. Unfortunately, many of those distributors focused primarily on sales rather than proper after-sales service and technical support.
With all of this said, I do not see many other manufacturers that are willing to engage with the consumer directly to repair their reputation. I can think of many brands guilty of very bad after-sales and support.
Regarding the trade in “fine print” and process:
The process is designed to be transparent and low risk (similar to trading in a used car):
- Preliminary remote assessment Completely free. You submit serial numbers, manufacturing dates, and photos via the ticket system. Solar Deity gives an initial estimate.
- Physical inspection Also free if you decide to proceed. You send the battery (at your cost for shipping). They test it with professional equipment.
- Final offer Binding trade-in value is given. If you accept, the credit is applied to your new Fidus (or other model) purchase. If you decline, you simply arrange collection of your battery no inspection fees, no hidden charges.
- No obligation at any stage until you accept the final quotation.
If users have specific concerns about “hidden details” e.g. shipping costs, turnaround times, minimum trade in values, or what happens in edge cases like swollen batteries, please state them clearly here or in your ticket so Solar Deity can address them directly.
The new products come with far better C-ratings, more robust chemistry, and improved designs.
The Fidus (IP65 with 10-year warranty and optional aerosol fire suppression) and their HV range are excellent examples.
As a Tier 1 brand, Pylontech has clearly evolved with the market.
We believe this partnership is a meaningful step forward. We encourage anyone interested to book a no-obligation assessment via Solar Deity it’s free at the preliminary stage.
Appreciate the open and constructive discussion. This helps the whole community move forward.
Sincerely
Jay

https://powerforum.co.za/newsletter/

There are some specific 3.6kW, 5kW and 6kW Sunsynk units that are passively cooled, but they are probably only be available in areas with more temperate climates (unlike Syria 😄).
Some innovative members have pimped their 8K and 5K Sunsynk / Deye inverters to cool the rear heatsink with a small platoon of DC fans, and due to fan selection and sheer numbers running at a low speed, noise is not only significantly reduced, but operating temperatures have plummeted, which ensures greater longevity.
https://powerforum.co.za/topic/17423-my-sunsynk-8kw-silence-hack/

I haven't done it personally, but know of people that have. Give Wimpie (Powerforum-store) a call or WhatApp on +27 67 189 7084, he has oodles of experience, gives great advice and has sourced specific things for me in the past at a great price.

Was given this by a friend who vacated his rental house in Dec 2025 as it was to be renovated by the owner
He ended up in a flat so could not use it and since passed away. I gave his widow R500 for it
I have no means of testing it, apart from connecting a 220 volt supply to see it comes on
Please collect in Cape Town southern suburbs.

No thanks, I have to take my wife shopping, complete my income tax returns and trim my toenails. 😆

https://powerforum.co.za/newsletter/

Wow. You must be a hoot at parties.

https://powerforum.co.za/newsletter/

Good evening Fellow Forumites
Good news - we managed to get the generator to charge the batteries without tripping the unit. Thanks for the help and advice and to the team @Solis Inverters SA who was very helpful and making my friend happy again (it was his 50th birthday too). Turns out a software update and a few minor adjustments on the input side was all that was needed. COC was issued and his system is working better than expected.

https://powerforum.co.za/newsletter/

Sounds like a pretty good arrangement to me.
If I hadn't had my own Pylontech batteries expropriated without compensation donated to my brother, I would probably have availed of the offer. It beats advertising in the classifieds for months, only to have some strange shifty-eyed time-wasting tyre-kickers come around, presenting a lowball offer whilst ogling your wife and the other goodies stored in the garage.
I'm also encouraged by the enthusiasm with which the brand is now supported locally. This is one key factor to brand loyalty and healthy competition, which can only lead to advantages for the consumer.

https://powerforum.co.za/newsletter/

https://powerforum.co.za/newsletter/

https://powerforum.co.za/newsletter/

@HennieL
and the forum, We completely understand the scepticism many members have had frustrating experiences with Pylontech support in the past, and those concerns are valid.
On a positive note, Pylontech via Solar Deity and Powerforum is actively working to fix they're after sales support and technical services in South Africa.
This is genuinely encouraging and refreshing, especially considering how small our market is compared to the rest of the global renewable energy sector. They are willing to engage directly with the community, which shows real commitment.
Powerforum is also engaged directly with Pylontech in China to help facilitate the restoration of their reputation here.
Our experience with Solar Deity so far has been very positive they are committed to delivering proper after-sales support and educating both installers and end-users.
Many users argue “But the BMS is supposed to protect the battery.” This is fair, however the older BMS units in the US-series had limitations.
They could prevent catastrophic events but were not always 100% effective against long-term cell stress from sustained high C-rates, poor thermal management, or frequent high-load cycling.
Newer BMS technologies have improved significantly, and Pylontech’s latest protocols have become a standard that many other brands follow.
South Africa’s extreme heat and cold conditions also played a big role these are not favourable for older lithium technology.
Combined with limited knowledge of lithium systems at the time among consumers, installers, and distributors, some very bad decisions were made around system sizing and configuration.
These were not directly the fault of the manufacturer.
On top of that, after-sales support was never handled directly by Pylontech it was left to their local distributors. Unfortunately, many of those distributors focused primarily on sales rather than proper after-sales service and technical support.
With all of this said, I do not see many other manufacturers that are willing to engage with the consumer directly to repair their reputation. I can think of many brands guilty of very bad after-sales and support.
Regarding the trade in “fine print” and process:
The process is designed to be transparent and low risk (similar to trading in a used car):
- Preliminary remote assessment Completely free. You submit serial numbers, manufacturing dates, and photos via the ticket system. Solar Deity gives an initial estimate.
- Physical inspection Also free if you decide to proceed. You send the battery (at your cost for shipping). They test it with professional equipment.
- Final offer Binding trade-in value is given. If you accept, the credit is applied to your new Fidus (or other model) purchase. If you decline, you simply arrange collection of your battery no inspection fees, no hidden charges.
- No obligation at any stage until you accept the final quotation.
If users have specific concerns about “hidden details” e.g. shipping costs, turnaround times, minimum trade in values, or what happens in edge cases like swollen batteries, please state them clearly here or in your ticket so Solar Deity can address them directly.
The new products come with far better C-ratings, more robust chemistry, and improved designs.
The Fidus (IP65 with 10-year warranty and optional aerosol fire suppression) and their HV range are excellent examples.
As a Tier 1 brand, Pylontech has clearly evolved with the market.
We believe this partnership is a meaningful step forward. We encourage anyone interested to book a no-obligation assessment via Solar Deity it’s free at the preliminary stage.
Appreciate the open and constructive discussion. This helps the whole community move forward.
Sincerely
Jay

https://powerforum.co.za/topic/34279-upgrade-program/

@HennieL
and the forum, We completely understand the scepticism many members have had frustrating experiences with Pylontech support in the past, and those concerns are valid.
On a positive note, Pylontech via Solar Deity and Powerforum is actively working to fix they're after sales support and technical services in South Africa.
This is genuinely encouraging and refreshing, especially considering how small our market is compared to the rest of the global renewable energy sector. They are willing to engage directly with the community, which shows real commitment.
Powerforum is also engaged directly with Pylontech in China to help facilitate the restoration of their reputation here.
Our experience with Solar Deity so far has been very positive they are committed to delivering proper after-sales support and educating both installers and end-users.
Many users argue “But the BMS is supposed to protect the battery.” This is fair, however the older BMS units in the US-series had limitations.
They could prevent catastrophic events but were not always 100% effective against long-term cell stress from sustained high C-rates, poor thermal management, or frequent high-load cycling.
Newer BMS technologies have improved significantly, and Pylontech’s latest protocols have become a standard that many other brands follow.
South Africa’s extreme heat and cold conditions also played a big role these are not favourable for older lithium technology.
Combined with limited knowledge of lithium systems at the time among consumers, installers, and distributors, some very bad decisions were made around system sizing and configuration.
These were not directly the fault of the manufacturer.
On top of that, after-sales support was never handled directly by Pylontech it was left to their local distributors. Unfortunately, many of those distributors focused primarily on sales rather than proper after-sales service and technical support.
With all of this said, I do not see many other manufacturers that are willing to engage with the consumer directly to repair their reputation. I can think of many brands guilty of very bad after-sales and support.
Regarding the trade in “fine print” and process:
The process is designed to be transparent and low risk (similar to trading in a used car):
- Preliminary remote assessment Completely free. You submit serial numbers, manufacturing dates, and photos via the ticket system. Solar Deity gives an initial estimate.
- Physical inspection Also free if you decide to proceed. You send the battery (at your cost for shipping). They test it with professional equipment.
- Final offer Binding trade-in value is given. If you accept, the credit is applied to your new Fidus (or other model) purchase. If you decline, you simply arrange collection of your battery no inspection fees, no hidden charges.
- No obligation at any stage until you accept the final quotation.
If users have specific concerns about “hidden details” e.g. shipping costs, turnaround times, minimum trade in values, or what happens in edge cases like swollen batteries, please state them clearly here or in your ticket so Solar Deity can address them directly.
The new products come with far better C-ratings, more robust chemistry, and improved designs.
The Fidus (IP65 with 10-year warranty and optional aerosol fire suppression) and their HV range are excellent examples.
As a Tier 1 brand, Pylontech has clearly evolved with the market.
We believe this partnership is a meaningful step forward. We encourage anyone interested to book a no-obligation assessment via Solar Deity it’s free at the preliminary stage.
Appreciate the open and constructive discussion. This helps the whole community move forward.
Sincerely
Jay

https://powerforum.co.za/topic/34279-upgrade-program/