Derek Ramos

@WannabeSolarSparkythank you for the information I understand what you are saying about the dc to ac watts not being the same, I have read about it somewhere before but I am struggling to find out how to convert ac watts to dc watts. It seems like it not really just and easy calculation. also regarding your picture. I understand some of it but then again this is the first time I’m looking at the sunsynk interface so if it not to much trouble for you to explain what each gauge is for that would be great, otherwise not to worry I will do some googling and hopefully find out more information your posts have been extremely helpful. if you don’t mind me asking, I have another thread going in the batteries catagory and basically I’d like to know why you chose narada batteries?

Thank you Bobster, that’s very useful information. Appreciate your input.

Yellowtapemeasure, thank you for the time taken to write this post. the reason for my quote of “if price didn’t matter” is to narrow down the field so that performance and reliability would be the main reason for every persons choice. now that you have mentioned a few batteries that you would recommend, the price factor according to its ability comes into play. prices are rough estimates on 4.8kw batteries (100ah) Freedom won- 44000 hubble- 27000 pylon- 24000 dyness-25000 byd- 67000 bsl- 33000 lbsa- 30000 narada- 23000 the Sun pays- 22000. because of your post the benchmark now is Hubble batteries, so according to price a lot of the expensive ones won’t be considered. I will now research Hubble next to the cheaper options such as narada, pylon, dynes. I would greatly appreciate any comment you have on the selection of cheaper options and why you wouldn’t consider them or why you would consider them. I don’t want to go the cheap route if it’s not warranted. But if there is not to much difference regarding the cheaper to most expensive I would definitely consider a cheaper battery.

Hi, so I have another topic going about my requirements, I will send a link if required. it seems difficult to find out which battery is best… I know most people would shop for the cheapest to save money but what I’m trying to find out is which battery brand has the best after sales service, communication with the invert, best battery monitoring and best protection for the battery regardless of the price I am starting my solar journey and at this point I have almost settled on starting with a 8kw sunsynk inverter (unless someone changes my mind) I will also be buying 2 x 4.8kw lithium batteries (unless there are other options) I see the most common batteries used or spoken about here are, Hubble, pylon, freedom won, narada. I haven’t see to many people speaking about sunsynk batteries though. Also, is there anyone out who has tested the 3-4000 cycles and 10 warranty on some of these batteries. what’s your thoughts? Please let me know even if it’s the smallest detail.

Thank you Jay, much appreciated

Wannabesolarspark- you are a legend man, thank you for this insightful post. okay so let me see if I’ve got this right. you have a 5kw inverter which means that it can send 5000 watts of power at any given time( I’m assuming that’s how inverters work) then you have a 10kwh battery pack which I’m also assuming you can send out 10000watts of power for one hour. or 1000watts for 10hours you also have 5400watts of solar coming in at peak lighting which Im assuming gives you 5400watts constantly and only dips when your lighting is bad? (rough estimation) please explain if any of the above is incorrect. now I’m thinking because you have 10000watts of battery when your solar turns off at night, your crypto rig does 750watts which then gives you 13 hours of running time just for your crypto miner (theoretically) but you saying from 8pm to 4am is roughly 8hrs? Is this correct? I will do some research on a sonoff switch because I don’t know what that is. based on everything you have told me, I think I’m going to start off with a 8kw sunsynk inverter, 2x 4.8kw (100ah) batteries. I obviously have a lot of stuff to work out still and I want to find the best battery but imo it’s seems the freedom won batteries are a lot more expensive, so I will do some research. regarding the solar panels, I’m renting so I don’t want to scatter this roof with panels and also I don’t know if the financing will be available for everything. but let’s just say I only want to charge the batteries for the evening, how many panels would I need or how many watts would I need to charge the batteries. I could also think about getting one 4.8kw battery and a couple of panels to charge that battery. do you have any thoughts on this?

thank you so much for the reply, couple of questions 😀 what brand lithium batteries did you get and are they the same shape as the 100a lead acid ones? I see in your picture you have two inverters, I’m assuming you not using the other one. just to get this right, your crypto uses 700watts and you have spare power to run your house during load shedding? Or do you switch your rig off during load shedding. how many solar panels do you use on your system if you were just running your crypto? Or how many would you need to charge up your batteries during the day? does the sunsynk have settings so that you can set when to charge and how fast you want to charge the batteries. does the solar panels run your house during the day or your crypto during the day without the need of using your batteries? Unsure really on the complete function of solar panel, is it to just charge the batteries or to use the wattage during the day? thanks again…

Hi, this might be a long post 🙃 please assist if possible Im looking to upgrade my current inverter (3kw an 200ah lead acid) which was a terrible choice to begin with. I need a system that can handle about 300watts for at least 6 hours easily… I’m renting a house which means at this point I probably won’t install solar but I want a system that I can add solar when I do buy a house. I have upgraded all the lights to led and rewired my DB board so that my lights and my Lounge plug point is on my inverter. Tv, DStv, WiFi, lamp. In total my plug point draws about 160watts. My largest light I use draws 52 watts. Total- 212watts Essentially I need this for load shedding but in the future I would like solar panels during the day for my geyser and to charge my batteries. (15.4amps or 3696watts for the geyser) my problem here is I don’t understand the lithium batteries capacities for what I need. I also don’t know if I should get an 8kw inverter or a 5kw inverter, I don’t understand the kw rating. Bearing in my the future expansion. Also please bear in mind that I am going to be doing the install myself. Very experienced in electrical work and very handy with everything I do. So let’s start… I’ve been looking at sunsynk inverters because they seem recommended by most… do I need a battery controller with this inverter? Also would I need a solar panel to inverter controller or would the solar panels just get connected into the inverter. Please excuse my poor reference to the correct names of the equipment. so here’s some basic questions.. 1. what size lithium battery would I need for your recommended size inverter for 300watts for 6 hours. 2. what’s the best value for money or best overall lithium battery brand 3. What inverter brand overall is best for this application 4. If I have the inverter and batteries then what extra equipment would I need to add solar panels to the system. Once I have some answers to these questions I will probably blow your mind with the series of questions that come after (sorry) I also have a full spreadsheet of what every light and appliance draws in amps or watts if needed. I also have a gas hob which means if expansion is possible financially I could look at a whole system to get off the grid. Eventually I will also do something about the geyser. For now I’m just annoyed with my current system and load shedding. any help on this situation will be greatly appreciated and I do applaud all the people on this forum for taking the time in helping people stick it Eskom. 👍🏼 one last thing, this is not priority but I am curious. I have a crypto mining rig that draws exactly 2.92amps around 700watts (constantly 24/7) a company gave me a quote of 270k to run this rig 24/7 off the grid. Are they just high off their butt or is that what it would actually cost? once again thank you for even reading this far

I’m sorry for hijacking this post but regarding your replay, what lithium battery would you recommend to swop out 2x 100ah lead acid batteries that would give the same output. I have a 3kva pps inverter. Its a rather terrible inverter imo because there isn’t much monitoring I can do. My batteries are shortening in life span an looking to upgrade my batteries thanks

Hi, so I bought a pps 3kva inverter and 2 x sealed 100ah lead acid batteries.. paid about 12k a year ago. My batteries have these inspection glass on top and both are green in colour. Research I done is that green means the batteries are still good.. question is, I only get about 2.5hrs but I’m only running like 180watts which in theory should give me roughly like 6hrs at 50% capacity? Are my batteries damaged? can I replace these batteries with 100ah lithium batteries? Saw them on takealot for like R7600? Is it even worth it? Or should I just replacement my whole system with like a sunsynk inverter.. looking for recommendations on a system that I can buy and expand with over time, maybe add solar panels so I’ll need something that can do solar panels. im okay with just getting through load shedding for now until I eventually start investing to get off the grid