I haven't posted on this thread until this post. What is your issue with me on this thread?Ppl like him and brb58 is exactly why I started posting here we were having good dicussions until both want to appear…”insulting”
I haven't posted on this thread until this post. What is your issue with me on this thread?Ppl like him and brb58 is exactly why I started posting here we were having good dicussions until both want to appear…”insulting”
That is why I use a 2 Amp active balancer and disable balancing on my BMS. In my case, my Orion JR2 BMS is actually very good at Coulomb counting and interfaces well with my Inverter. It just does not have the power to balance my grade B cells which constantly drift. Plus, it is a resistor bleed balancer which would take even longer if only one cell was low.Because the one in the BMS is usually crap. Most built ins usually only balance in the milliamp range where an external one may do amps (thus faster).
Even though it is an option, it can probably be disabled by configuration .... sorry, have no experience with those.The mpp solar 3048 has an equalizer feature built into according to documentation Warning the online documentation might not be same as inside and what comes with the product. So according to mpp solar it desulfates which is not a property of lifepo batteries to my knowledge.
sorry for some reason it quoted youEven though it is an option, it can probably be disabled by configuration .... sorry, have
It is called the “thumbs up“ gang mentality. But it nice to see you actually post. Without being insulting…. ?? any 2 cents to add with the subject of balancers vs equalizers without being insulting
The mpp solar 3048 has an equalizer feature built into according to documentation Warning the online documentation might not be same as inside and what comes with the product. So according to mpp solar it desulfates which is not a property of lifepo batteries to my knowledge.
That mostly looks like market BS .... and I'm not quite sure why a "good" BMS should have GPS. Is it somehow necessary for the battery to know where it is at all times?More advertising
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sorry for some reason it quoted you
But bob this guy is saying it…. There is good info there… but lot of things depend. If there was a one shoe fits all we would be clones and do everything just alike almost like Robotic AI except different task and different programming and ….. you see where it goes for incoherent…. But applicable for some of it. We would be the same but different.That mostly looks like market BS .... and I'm not quite sure why a "good" BMS should have GPS. Is it somehow necessary for the battery to know where it is at all times?
I agree. If the BMS actually has an active balancer (vs a bleed balance function) there is no need for an additional active balancer.Why buy an active balancer if active balancing is built-in as part of the bms?
Off topic don’t want gps in my bms and don’t like the blue tooth being open in my himassi smart heated bt batteries either…… it should be secured. Most everything smart tied to satellite or internet from china has bothered me for years We already know they hack back door into security cameras purchased from china. Same for smart tvs. We might as well allow them access over our back up supplied bms batteries and track us while at it. They get all the power data built into their programming sent to them for all the ppl using it but that is off topicThat mostly looks like market BS .... and I'm not quite sure why a "good" BMS should have GPS. Is it somehow necessary for the battery to know where it is at all times?
Documentation that I’ve read definitely recommend top balanceI agree. If the BMS actually has an active balancer (vs a bleed balance function) there is no need for an additional active balancer.
Probably no reason to do an initial top balance either.
I did a parallel top balance on my 42kWh pack and after assembling it. the active balancer still had some work to do. Therefore, despite the extensive documentation suggesting top balancing is required, I think a case can be made for letting an active balancer to the final balancing if one carefully monitors that process. It may require slowly adjusting up the CV set point or letting the tail current taper longer. It is not something I would recommend for novices.Probably no reason to do an initial top balance either.
Agree see my other post edit added aboveI did a parallel top balance on my 42kWh pack and after assembling it. the active balancer still had some work to do. Therefore, despite the extensive documentation suggesting top balancing is required, I think a case can be made for letting an active balancer to the final balancing if one carefully monitors that process. It may require slowly adjusting up the CV set point or letting the tail current taper longer. It is not something I would recommend for novices.
As much as I cleaned the cell terminals and bus bars and immediately applied NoAlox, my BMS still showed differences in internal resistance between each group of 3 buddy pairs. My pack is 3P16S.
Do you have anyway to know if it is real power transfer vs bleed voltage drop? Any simple quick way? Lifepo have their normal drop in voltages over time and probably more so with loads and functions of a bms. The more thing the bms is tasked obviously the more it will drain the soc. Right?I agree. If the BMS actually has an active balancer (vs a bleed balance function) there is no need for an additional active balancer.
Probably no reason to do an initial top balance either.
I can't speak for your BMS but I have observed in real time during a very slow charge where the high cell was decreasing and the low cell was increasing. Fairly slow process depending on the hardware but the transfer is real.Do you have anyway to know if it is real power transfer vs bleed voltage drop? Any simple quick way? Lifepo have their normal drop in voltages over time and probably more so with loads and functions of a bms. The more thing the bms is tasked obviously the more it will drain the soc. Right?
How do you monitor your cells? App or computer program? Some ppl say they are using raspberry pi computer to do it.I can't speak for your BMS but I have observed in real time during a very slow charge where the high cell was decreasing and the low cell was increasing. Fairly slow process depending on the hardware but the transfer is real.
I keep watching and trying to catch the “active balancing monitor“ - in the bt bms program “ vip-bms app“ as seen in screen shot …. to see it turn on … be interesting to see the bms actively registering a balance in progress. That is why asked, “ How were you measuring your balance progress”. I’m not as dumb as seem sometimes there are reasons for questions to be revealed. ?. I made this post to clear some things up.… though. Who knows maybe it was worth it or maybe not. Depends on the sorted sorter. Thanks.Just the Overkill BMS app. Very low tech, no data recorded. Active balancer is the common 5a Heltec.
I can attest to that. I got a couple of 5 amp fly balancers and they do the job like right now. Disclaimer: I only plug them in when the batteries are approaching full charge and then unplug them.Because the one in the BMS is usually crap. Most built ins usually only balance in the milliamp range where an external one may do amps (thus faster).
It works for some and not for others. It’s dependent upon your pattern of use. If you use some sort of controller to switch on the balancer above 3.42VPC , it’s pretty much guaranteed to work for most applications and you don’t have to wonder if it works for you or if your pattern changes. It’s a good idea to disable the BMS’s balancer if you augment it with an external balancer, they can conflict.What happens if you just leave them connected, have you tried that? I left mine on for over 14 months on my 8s setup, never an issue.
Yes. You will want something like this to help keep each 12v battery in sync with the other 12v batteries in your 48v series pack.So if I have 4 cheap 12V batteries that I would like to put in series and add to my 48V string Wouldn't this help to keep the 4 packs balanced my packs. Each Pack has it own passive balancer but there is nothing to keep one of the 4 from running away.
I have (4) Eco-Worthy that are looking for a home..