Justice MM

I have three 10-kWh batteries installed for almost 3 years and have had no problems so far. The ones I have is a square shape unit, and I have seen that they have since introduced a new rounder shape one. I have been looking at adding a unit, and the Green Deer support team is not so good. It seems like there is only one person who works there. The design of the battery with terminals underneath makes it almost unavoidable to have long cables. I have since been looking for battery cabinet, and I dont seem to find anything. Can anyone assist?

Guys I know this is the old matter, but does anyone know of the final solution. I have two of these batteries connected to the Luxpower off-grid (another mess) inverter, and one of the batteries is not charging. I think it started long ago but I didnt know because the other battery is working fine, plus there's solar power. That's just site 1, the second site both batteries failed but also the inverter failed (so I suspected the inverter). The batteries were exchanged for free and the inverter was also repaired for free (sort of). The third site same thing is happening and all along I have been suspecting the Luxpower, but now having read these comments I think the battery is the main culprit. Spoke to CFE people and they say I must do a firmware upgrade for the batteries. Can anyone share a detailed solution if it exists, including the settings for this battery. I will apprcieate.

Hi. Was this problem finally resolved. I have two units (12-kW) that were commissioned in early 2023, and now suddenly have a parallel problem. They are also linked to a 30-kWh battery bank. Recently, I commissioned two 5-kW parallel, and the newer unit has an f29 fault. It worked for two weeks. The Deye people are saying it's parallel chip failure and both pairs (12 and 5-kW) must be taken to the workshop to replace the defective chips. So far I havent done that as I suspect there's more to this than just chip failures. Any advice/opinion?

Hi. I have an 8-kW Deye inverter connected to three 5-kWh Shoto batteries. The system during the day runs at about 5-kW and in the evening at about 6-kW. I have noted that the Grid voltage is very poor and sometimes run as low a 194-V as load goes up. What puzzles me is that somehow the inverter trips if the voltage improves say to 216-V and remains OK for voltage well below 200-V. The setting for the inverter is 184 to 270-V. Does anyone have a clue?

Thanks a lot

Correction: *existing UPS uses lead acid batteries........

You are right. The server itself doesn't use much power. The 20-kW we were catering for cooling and emergency lighting as well. They have quite a few servers. The existing inverter uses lead acid batteries and it ten years only and it's 30kW. It was an overkill, but I assume they were planning for expansion. The current hybrid inverters (with batteries) dont have any dips or power interruption if you loose the Grid. The battery automatically takes over in fact you dont even see notice that you lost the grid. The only delay would be if the inverter itself had tripped, as it takes a few seconds to synchronise. Hence my reason to ask if ever theres still need for the traditional bulky UPS.

That's great news indeed. I hope they can parallel more than two units or make larger units in future. I installed the unit in May this year, and I found it quite a great product. There are few improvement issues to address such as that meter installation manual, which is quite useless, also that the inverter won't work without the meter. They are also not good in explaining the inverter settings. In overall it's a great device quick and easy to install.

Hi. I have been using Helioscope and Energy Toolbase for my designs since they have been of smaller installations. However, I am at the stage where I am starting to work on larger installations, and I was wondering which software is best for South African environment. Any advice?

Good afternoon colleagues. Can plse someone with knowledge, assist in clarifying the difference between the traditional UPS (such as those supplied by Eaton, Siemens, Schneider) vs normal Hybrid or PV inverter such as Sunsynk, Victron, etc. I have a server that I am busy with replacing the old UPS system (non-pv), which I have to make a decision to install hybrid inverters as the client has requested it to be solar connected. The load is not much, about 20-kW. Can someone send at least detailed text or references or examples. I have looked all over online I am not getting the best results. Thank you in advance.

This is a very old question, and it was long addressed. Thanks for your suggestion.

Thanks a lot. Just happened to be in Pmb. I am trying very hard to get the batteries delivered tmr. If that fails I will definitely contact you.

I have a site with a 8-kW Deye inverter connected to two shotos and solar panels. Recently I have removed the batteries for BMS repairs and the system is running with solar plus grid only. Lord behold the substation feeding the client has burnt down and now the client is only left with solar panel. I know most pv inverters need a reliable source of supply (battery or grid) to run, but I thought hybrids can still run with solar only. Has anyone experienced the problem and what can be done to resolve it?

Great stuff thanks

Can you plse assist. I have two sites where I have connected a DEYE inverter with two 5.12-kW Shoto LFP batteries and another site I have connected the Growatt inverter with same two batteries On site No.1 and 2 (DEYE inverter) The batteries are connected parallel, and communicate the inverter through a CAN system. When I connected the plant in September everything was working well. However, about 2-3 weeks ago, the customer called and said that the 2nd battery is now off. I went there to check and indeed the battery was off. I tried to reset it and was not successful. I increased the charge current to 100-A and still no success. Can you please advise. On site No.3 (Growatt inverter) From onset the CAN communication did not work. I eventually used the voltages. Everything worked well for a few weeks, and later I discovered that the same thing has happened. Battery No.1 is now dead and cant be revived, From my observation is that I may have set the charging current too low in all sites, and eventually batteries went dry. The question is how can I revive the batteris. I happened to visit a certain shop and they were showing me one charge that they say can resuscitate even a dead battery. I know there's a lot of questions and/or problems here but I would appreciate if anyone can assist where possible.