WernerH

Thank you for this video, think i watched it a few months ago and watched the other 2 videos earlier this week. unfortunately it is a sealed Lead Acid battery, so don’t have access to add more water. i unfortunately don’t have the patience required to wait before steps and wanted to get the batteries back up before tomorrow load shedding (even if only at a fraction of rated capacity). Hopefully the waiting isn’t that important. I did the following: - Charged using standard battery charger - over charged using a bench PSU at 10a for around 8 hours. - batteries started warming up at some of the cells (not boiling hot, Luke warm). Maintained around a 16.8v charge at 10a. - let battery sit for a few hours to settle - tested capacity using capacity tester at 20a - repeated another time. is that roughly right? I do however think that i am going to need to upgrade - getting some quotes for the Freedom Won 10/8. thanks again.

Must be doing something horribly wrong. after trying to desulphate, the capacity has actually dropped by around 30%… ahhh

So…. Bought a battery capacity tester from Banggood that runs the batteries under a configurable load and measures capacity…. Turns out they are are stuffed. Running to 11.8v at 20 Amp load estimate: - 1 at around 10% capcity -1 at around 15% capcity - 2 closer to 30% capacity Now trying to desulphate using the tricks mentioned above by running 10 amp load and over voltage into the batteries to see if i can eat some extra use out of these batteries - but getting ready to upgrade to Lithium - it is inevitable. Will update on how much more i can get from them.

thanks for all the comments and help thus far. I guess that 6 years is good going for these batteries. Looking at the Equalizing process i am missing some key pieces of equipment, not least of which is the Battery Charger that can be properly managed. Perhaps it is time for the upgrade, just need some cash first, so i'll keep them going for a little longer. Some advice please? As my imeon is a little old it does not have a CANbus port, which it seems is needed for a lot of the newer lithium batteries. I can get an upgrade Module at the eye watering cost of R8k. Should i rather bite the bullet and upgrade the Inverter as well? Lots of people seem to have the GoodWe Units. - Are these good? - are they Hybrid units that are able to draw and prioritise power from solar/batteries/grid and to consumables/batteries/grid as per Imeon? - think so - My only other worry is that the Imeon was able to output up to 6kw + when grid was up. Every now and then i exceed 5kw and get closer to 6 (even 7) kw for short periods (oven, kettle and microwave on at the same time). Can the Goodwe's reach this level of power output or are they capped at 5kw? thanks again for the help to date. werner

Hi all... Hope that someone here has some advice for me. The background to my issue is that i should have enough battery power to last 4hrs, but am losing power off at around 1h55 (5 min short of the typical load shedding time). I have 4 x vision 200ah 12v batteries, which should last almost 5 hours with 1kw draw. (4 x 200ah x 12v = 9600kwh. 9600kwn x 50% = 4800kwh usable = 4.8h at 1kw draw). My Inverter is an imeon 3.6, which i have been very happy with. I know that these are not well liked in general, and definitely not well supported in SA, but it has served me well for the last 6 years with these batteries. I took voltage readings while the batteries were being used and i noticed that the 1 battery was showing a much lower voltage than the others (+-10v vs +-12v for the others). This made me suspect that there is an issue with this one battery. After the power tripped i ran a number of tests on the battery and took voltage readings along the way, which i have attached. Some after charge, some after rest, some after testing machines. The issue is that all of the subsequent tests suggest that the batteries are all fine. What am i missing, or is there another test that i should do? Perhaps my bettery settings on the imeon are wrong? I unfortunately don't have the admin password and am battling to get it. I have also set the DOD to 70%, but from the voltage readings it seems that i am not getting anywhere near 70% use. A final resort might be upgrading batteries, in which case i will go lithium, but that is an expensive upgrade. Any and all help will be greatly appreciated. werner

Hi... I live in Cape Town. Have had the Imeon inverter for around 5 years and have been really happy with it so far. I am looking to upgrade to lithium batteries (looking at the Freedom Won brand). Do you need the ima-box to properly run lithium. Does it also provide the Os.One web interface? Unfortunately imeon doesn't seem that well supported in SA anymore. Battle to find parts. Where did you buy the Ima-Box from?