Kavish

Hello Power Players! I've been searching the net as well as reading through the manuals for this and cannot find the exact answer to my question. Will try and be as brief as possible. I had this connected to a 24v Hoselect lithium battery for a while and all worked well. Passed this onto a friend of mine and the inverter has now gone in for repairs on two occasions. Seems there were faults with the main board. On the second visit, the gentleman in the servicing department said that you cannot use this inverter with any lithium batteries, which confused the heck out of me cos I did use it with no issues. I checked the Geewiz website, which is the place from where I purchased it and this new info which wasn't there before states that you cannot use this inverter with Hubble lithium batteries. Since they don't indicate other brands, I'm led to believe that something is up with Hubble's lithium battery. Do you guys know or have any info regarding this? Or have you experienced anything similar? Regards Kavish

Just for the moment, I’ve disconnected two of the batteries. I’m running just the 2x 24V 100Ha in series.

Awesome stuff, ok cool. Thanks so much guys. Let me get searching for something. Aliexpress will be the last option cos I have bad luck with international shipments, especially from them. Still awaiting some generic chargers and cables from a purchase in 2018/2019.

Something like this?

Any chance you have a link for a JK BMS that I could look at purchasing? I'm a noob but do get the great ideas here. I could possibly ask an electrician that helped me connect these batteries how to go about building my own 48V with the JK BMS.

I unfortunately don't have a multimeter on hand. I did check the readings on the screen and this was what reflected: First group: Battery 1 - 29.7V Battery 2 - 26.4V Second group: Battery 3 - 29.1V Battery 4 - 27V I'm guessing this may not be reliable info based on your post questioning the BMS reliability?

Thanks for responding to me, Beat. You're correct about there being a BMS indicator on each of these batteries. The cycle count on the used one should be between 6-10. The other 3 were brand new. I'm currently load shedding at the moment and the readings per battery are as follows: Battery 1: 82% (new battery) Battery 1: 59% (used battery) Battery 1: 72% (new battery) Battery 1: 71% (new battery) What I did notice is that each of these batteries appears to be charging at different voltages. Some reached a voltage of 31.5v. The older battery was charging at the lowest voltage. I'm not sure if this was a good thing - forgive my wet-behind-the-ears comment. I did try equalising through the Axpert inverter although I am not sure if that helped at all. Regarding purchasing a resister, would I purchase something like this?

Sorry, just adding to my long story - at the moment, the three new batteries show that it is 100% charged. The used battery is showing 83% charge which is weird. When I used it as a standalone, the battery did charge and showed 100% charge.

Hello Ladies and Gentlemen I needed some advice and my first point to turn to was this forum (as usual). I tried searching and found some topics that added value although from what I read, I wanted to just post this with my thoughts so that someone to keep me or put me in check. I have a 48V Axpert inverter and 4x 24V Hoselect lithium batteries. I also have Solar Assistant connected to the system although I think that the inverter settings are overriding Solar Assistant's settings. The batteries are in 2 groups of 2 to make 48V. The first of the 4 batteries arrived 2 weeks before the other 3 so I did use it a little with a smaller inverter that I had. I've noticed the balancing between that one and the other 3 are not equal. My first thought was to get a battery balancer. Would I be correct to say that I would need 2 of these battery balancers? Link here or open to other suggestions - I'm a noob. The first balancer would be for the first group and the second balancer for the second group. I'm also asking because I read somewhere on the internet it said one would need 3 battery balancers but there was no explanation for it so I couldn't understand the need for the third one. I guessed to ensure appropriate balancing between the two groups? I also need to desperately change the settings on the inverter as the settings applied to my old batteries which were those Omnipower 4x 12v AGM batteries. My electrician had previously set my inverter so that 1amp is used every so often from the battery to keep the batteries constantly engaged/running. I don't know if this should be applicable with these new batteries. He and I don't talk anymore as he ruined those AGM batteries by setting the DOD way too low causing its demise. If anyone has a setup similar to mine, please could you help here. I'm sorry for the long story and still not sure if I may have overlooked providing you with any info to make a valuable contribution. Kind regards Kavish

My ave load is approx 600w. My guess is either a faulty battery or WatchPower is not the best to modify any battery/inverter settings.

And after 1 hour 15 minutes... These 4x 240AH OmniPower batteries are dead... LOL! This is a joke.

Thanks so much @Coulomb. That FAQ is quite interesting. Weirdly though, these batteries were replacements. My other batteries failed after 18 months and Sinetech said they qualify due to a manufacturer fault. So I'm keen to see how these new ones perform under perfect conditions. My electrician is of the opinion that these OmniPower batteries are not made for backup purposes and he thinks the same thing is going to happen with them. He suggests getting some panels to keep the batteries constantly engaged/running. Doing some research into his thinking... Have you ever heard of such a thing?

Hello Powermites I'm Kavish - I joined once upon a time to learn more about backup power and from time to time tend to search here and learn something. It's by far the most informative place on the net. After searching quite a bit, I wanted to ask for help on something - WatchPower settings. I have an Axpert 5Kva inverter and 4x 240Ha OmniPower batteries. I've adjusted the cycle, float, etc according to what the OmniPower battery states and wanted to know if I have overlooked anything. I adjusted the settings using WatchPower and not on the inverter itself. I'm a bit of a noob when it comes to using those buttons in the inverter. I'd be grateful for any guidance.