April 20, 20224 yr OK - so now I'm getting quotes for PV installs and can't compare the offers because of different battery makes. My daily consumption is below 20kWh at present. Essentially I am looking at: 8kW Sunkynk inverter 10kwh battery 8 x 540 kWp Panels = 4320kWp The different offers come with very battery combinations, and I am hoping for advice on which are the batteries that give no problems: Hubble - 2 x 5.5kWh Freedomwon - 1 x 10/8 Freedomwon - 2 x 5/4 LBSA - 2 x 5.1kWh Pylontech (waiting for the offer) Which combination would be the best to go for, from a reliability perspective? I am looking for a set and forget system. Thanks for your insights!
April 20, 20224 yr I have been using an LBSA battery for a year with no issues. I'm quite happy with it.
April 20, 20224 yr 9 hours ago, PicHopper said: OK - so now I'm getting quotes for PV installs and can't compare the offers because of different battery makes. My daily consumption is below 20kWh at present. Essentially I am looking at: 8kW Sunkynk inverter 10kwh battery 8 x 540 kWp Panels = 4320kWp The different offers come with very battery combinations, and I am hoping for advice on which are the batteries that give no problems: Hubble - 2 x 5.5kWh Freedomwon - 1 x 10/8 Freedomwon - 2 x 5/4 LBSA - 2 x 5.1kWh Pylontech (waiting for the offer) Which combination would be the best to go for, from a reliability perspective? I am looking for a set and forget system. Thanks for your insights! Using this criteria and not because I have nothing but the best experience with Pylontech since my first two batteries which were bought in August 2020. I would strongly urge you to go through this forum and you will be able to make up your mind. Search topics on all those batteries and your choice will be easy if reliability is what you are looking for If I were to do my install again, I would still go for Pylontechs
April 20, 20224 yr Note that some of the battery ratings are for marketing purposes and not real life. Check with the supplier: 1) Actual usable kWh with a daily cycle (Eg. To prevent dendrite formations some batteries are limited lower than marketing capacity) 2) Warranty with daily cycle of 80% or 90% DoD - there is a big difference between 3000 (8 yrs) to 6000 (11 yrs) 3) How does the BMS count a cycle - some count discharge + charge as 2 cycles so 3000 cycles is ~4years.
April 22, 20224 yr Author On 2022/04/20 at 5:17 PM, system32 said: Note that some of the battery ratings are for marketing purposes and not real life. Check with the supplier: 1) Actual usable kWh with a daily cycle (Eg. To prevent dendrite formations some batteries are limited lower than marketing capacity) 2) Warranty with daily cycle of 80% or 90% DoD - there is a big difference between 3000 (8 yrs) to 6000 (11 yrs) 3) How does the BMS count a cycle - some count discharge + charge as 2 cycles so 3000 cycles is ~4years. Thank you for the tips! A very important difference between the different cycles! WOW! Whilst batteries are a high cost, I believe that the technology development of batteries within the next 10 years will mean that if you need to replace batteries within say 5 years even, the size and capacity of batteries will change immensely! We may even end up with a totally different technology to store energy! I thank you for your tips and your advice. Many thanks!
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