Good day All Power People, 

im Looking to get a Lithium battery for my 5kva Axpert inverter. since Axpert is so loved might sell it and get a Growwatt or something but ive had the inverter 2 years never used it till now 

what do you guys recommend and why? What do you also have

in the same price range R25k ive seen the following 3 which i believe are good 

Revov 5.12kwh 

Dyness 51100

pylontech us5000 4.8kwh

seen Hubble but lots of guys say no aftermarket services and you need cloud connect to get it to work.

probably look at getting. the Rct bms connect like this or other if recommended RCT-AXPERT BMS BOX | Rectron (rectronzone.co.za)   if even needed. 

what solar Pannels do you recommend and config string for this will start with 1 lithium but would like 2 

mono, poly 

thanks 

Regards Albert

 

There's a few things to look at.

1) Is there a big advantage in changing to growatt? 
2) What is the C rating of those batteries? Read here for a good explanation of C rating, and note that not all batteries you're considering are C1 (or is it 1C?). The C rating will put a limit on the maximum, instantaneous load that you can service.
3) Look at the combination of battery and inverter. Not all batteries live happily with all inverters. For some folks having proper comms, so that the BMS controls the inverter, is crucial. For others it is no deal breaker. But also look at whether or not the battery maker or inverter maker include the other on their list of compatible products.
4) Do some research on the products, the alternatives, and also the company you are thinking of buying from. Not all give good support, and there are some grey marketeers and outright scammers about.

If your Inverter is working and you have no issues why change?
With batteries the answers will be subjective. It's a fan boy thing. My Hubble has had zero issues. Having said that, would I buy another? Probably not. My own tinkering over the last near 2 years have led me to the conclusion that their BMS and/or firmware causes calibration issues. Using Voltage control gives me consistent charge and discharge cycles with consistent voltages and charge capacities. Li BMS control causes battery voltages and capacity to reduce over time. No you don't need cloud connect to use a Hubble. It only apparently comes in handy is you need online support.
So point no 3 of Bobster is spot on.
Research local Battery support. Esener is another local battery brand to consider. Felicity of late also has a local representative and technical support.
Your panels should be stringed and matched for optimal MPPT range of whatever Inverter you use. Ideally you would want to get the max your MPPT can handle, makes yields better on cloudy days.
 

It's interesting to me that Freedom Won is so seldom mentioned here, as in "wow! That Freedom Won is fantastic" or as in "eish! That Freedom Won is a steaming pile." I think the price puts people off. I also wonder, since there are no alarm bells ringing around that company, if they are not aiming to do more business (IE bigger) installations and less domestic.

Price aside, I don't get this. They are locally made, nobody complains about the support, they have quite a long record in the Li battery business by local standards.

But yes... if you sort your list by price, they are not going to rise to the top.

Can I make another point for @Albert B:  Try to figure out the COMPLETE cost of the batteries. For some you will have to buy cable kits. Some you will have to buy mounting kits, others you can hang from a wall or just stack on the floor.

Edited February 20, 20233 yr by Bobster.
spellin

I think the kind of people that can afford Freedom Won batteries, are not the kind that hang around on these forums, but the kind that trust their installers to "make it work" 🙂

 

-G-

On 2023/02/20 at 8:26 AM, Albert B said:

what do you guys recommend and why? What do you also have

Hi,

read my comment here:

and here:

https://powerforum.co.za/topic/16753-rct-axpert-5k-and-lithium-ion-batteries/

 

Hi Guys, 

im looking at a lithium battery. 

Revo R100 and Dyness BX51100 which is better. 

both seem to have 10 year warranty Dyness is 5 but if you register it another 5 im just worried how that 10 year is and if it needs to be sent away for repairs or does Dyness have a local dealer to repair. 

I'm liking the wall mount of it but seen mixed specs on it for example LFP other is LiFePo Lithium ion they both around the same price. 

also been offered a Hubble am2 and am5 but seen a lot of mixed signals and complaints.

 

not to sure what all the installers are installing and how's the experience with the battery. 

 

thanks 

 

 

 

On 2023/02/21 at 11:15 AM, gallderhen said:

I think the kind of people that can afford Freedom Won batteries, are not the kind that hang around on these forums, but the kind that trust their installers to "make it work" 🙂

 

-G-

OK. I'll go look for the door 😀

On 2023/02/20 at 9:25 AM, Bobster. said:

It's interesting to me that Freedom Won is so seldom mentioned here, as in "wow! That Freedom Won is fantastic" or as in "eish! That Freedom Won is a steaming pile." I think the price puts people off. I also wonder, since there are no alarm bells ringing around that company, if they are not aiming to do more business (IE bigger) installations and less domestic.

Price aside, I don't get this. They are locally made, nobody complains about the support, they have quite a long record in the Li battery business by local standards.

But yes... if you sort your list by price, they are not going to rise to the top.

Can I make another point for @Albert B:  Try to figure out the COMPLETE cost of the batteries. For some you will have to buy cable kits. Some you will have to buy mounting kits, others you can hang from a wall or just stack on the floor.

Have an install with a Freedom won 10/8 , 5KW Victron MPII and about 6kwp of solar. 

Upgrading to a second Freedom won 10/8 and an additional 3kwp of solar soon. 

They are great batteries... but … money... 

3xDyness 48100 of varying ages. Oldest is 18months, youngest is 1 month. Never had an issue with them at all

5 minutes ago, mzezman said:

3xDyness 48100 of varying ages

Thats good to hear. My one neighbour recently started his solar journey and he bought a single Dyness 48100 for now. Uses it mostly during loadshedding at this time and had zero issues with the Li BMS protocol link with his Growatt Inverter. 

18 hours ago, Albert B said:

Dyness is 5 but if you register it another 5 im just worried how that 10 year is and if it needs to be sent away for repairs or does Dyness have a local dealer to repair. 

 

Are you sure about this?

 

The below I got directly from Dyness after registration:

You obtain Dyness's official approval, the product warranty period can be extended from four to five years. From the sales date as marked in the Seller’s invoice to the End User (“Invoice Date”). 

33 minutes ago, flyfisherman said:

Are you sure about this?

 

The below I got directly from Dyness after registration:

You obtain Dyness's official approval, the product warranty period can be extended from four to five years. From the sales date as marked in the Seller’s invoice to the End User (“Invoice Date”). 

My certificate also spoke of increasing to 10years after registration.

49 minutes ago, mzezman said:

My certificate also spoke of increasing to 10years after registration.

Hmmm, I may have to contact them as well as solar advice and see what's going on then, as I found it weird, Dyness say on website 10 years, but I got 5, upgraded from 4.

I see MANY websites selling Dyness, including Solar Advice, only state "5 year local warranty" or "5 year warrantee"...weird

I have a feeling these battery warranties are not worth the certificate paper they are written on...

 

Edited April 21, 20233 yr by flyfisherman

33 minutes ago, flyfisherman said:

Are you sure about this?

 

The below I got directly from Dyness after registration:

You obtain Dyness's official approval, the product warranty period can be extended from four to five years. From the sales date as marked in the Seller’s invoice to the End User (“Invoice Date”). 

about the warranty some sites say its 5 even the person selling it to me says its 5 and to get another 5 you need to register it online for the other 5 years so in total to get your 10 years

maybe some sellers register it for you to get the 10 year but their address is deff not South Africa which is my concern

nice looking wall mount battery but made in china

i see lots of users have the 4100 and not the 51100 thought the 51100 would be the better one

 

 

to register https://www.dyness-tech.com.cn/sign

10 minutes ago, Albert B said:

about the warranty some sites say its 5 even the person selling it to me says its 5 and to get another 5 you need to register it online for the other 5 years so in total to get your 10 years

maybe some sellers register it for you to get the 10 year but their address is deff not South Africa which is my concern

nice looking wall mount battery but made in china

i see lots of users have the 4100 and not the 51100 thought the 51100 would be the better one

 

 

to register https://www.dyness-tech.com.cn/sign

Yeah I was also led to believe via many channels its 5 years and after registration its 10. But My letter I got after registering with the same link you posted, clearly states my warrantee is increased from 4 years to 5 years : the product warranty period can be extended from four to five years ... I find this very weird and somewhat worrying.

Contacted Solar Advice (the seller) but no reply yet.

Edited April 21, 20233 yr by flyfisherman

26 minutes ago, flyfisherman said:

Yeah I was also led to believe via many channels its 5 years and after registration its 10. But My letter I got after registering with the same link you posted, clearly states my warrantee is increased from 4 years to 5 years : the product warranty period can be extended from four to five years ... I find this very weird and somewhat worrying.

Contacted Solar Advice (the seller) but no reply yet.

mmmm it says can be extended from 4 to 5 but doesn't say it is or was.

also who carry's this warranty and costs to get it to this address in China if it ever needs repairs 

ive been very keep on this bx51100 battery but also seen mixed info on what lithium cells are used in them like LiFe or lithium ion ect