mank1234:


Alternatively, if you have raspberry pi you can get ICC software from info@iccsoftware.co.za at a fee.

Afterwards, I can give you a seller on aliexpress that tasmotizes Esp-based devices or you can get some of the device (eg Sonoff) yourself and flash with tasmota. ICC software will use any of the inverter parameter you want to automate your device on and off.

adrusa:


I will certainly be glad to share my flow if I understand how it may help you. Node-red on home assistant is a great automation setup. I was using electronic timers, but I have replaced them all with esp based switches. Makes my home easy to manage.

ojeysky:


For LFP? I have some adjustable current and voltage 12v 50A chargers that just came in. It's 50k each.

netotse:


Can you share a link to a resource for flashing the sonoff? I have a couple I would like to tinker with

ojeysky:


Let's just say it's one of the disadvantages we get for not going premium, I guess we should just leave with that I set mine to the 24v cut-off but I endeavour not to get to that level in the first place because mine is LFP, I think with lead acid you should be fine with 24v.
On the LFP question, both are fine though I prefer the prismatic as I get to work with fewer cells but it's a matter of preference not performance

ojeysky:


Battery and inverter for that price or was it a typo?

mcTrinity:


Interesting... Kindly share brand/pics and specs, if you don't mind.
And what's ur location?

NiyiOmoIyunade:
The general thinking is that the Cylindrical cells are better as they dissipate heat more efficiently than prismatic cells. Being that they are tightly wound in a metal casing, they are also less susceptible to degradation from thermal cycling as they charge and discharge as well as mechanical stress and vibrations when/if moved around.

ceaser:


I have all my LFPs at 12.1v low voltage cut-off now o. I just reduced a set from initial 12.3v to 12.1v. I still hope to get an impressive performance cum duration of use from it sha.

ojeysky:


It's the silver in the picture here, got a few more when I placed some order recently. Have a few 12v and ant(7s to 20s) BMS as well both with bluetooth.

https://www.nairaland.com/390522/solar-energy-complement-fta/747#89842978

ojeysky:


How much capacity do you have left after 12.5v below? I don't think it will be up to 10%

ojeysky:
what system are you using that allow you set cut-off above 12v?

ceaser:


The BMS are LFP not Li-ion 18/6/5/0s, right?

earthrealm:


Yingli does it at half the cost

Yingli supz dey pay me for this free endorsement/advert. infact. i no go hype them again, until they do the needful

ceaser:


I have one left at 12.9v/13.0v by daybreak. The other pits at 24.3v by daybreak. I am auditing the loads on that one with a view to changing to more energy efficient ones.

In both scenarios, I used a 10A PWM with adjustable parameters connected to another relay that controls the inverter switch as the LVD device.

I have a big LVD bought off of AE that would have done the job of disconnect along the inverter to battery wires but I don't think I'm comfortable with doing it thru the connection from inverter to battery. So I basically utilize the same contact points that the inverter switch are soldered to.

earthrealm:


Yingli does it at half the cost

Yingli supz dey pay me for this free endorsement/advert. infact. i no go hype them again, until they do the needful

ojeysky:


Battery and inverter for that price or was it a typo?

ojeysky:


It's the silver in the picture here, got a few more when I placed some order recently. Have a few 12v and ant(7s to 16s) BMS as well both with bluetooth.

https://www.nairaland.com/390522/solar-energy-complement-fta/747#89842978

ojeysky:


Let's just say it's one of the disadvantages we get for not going premium, I guess we should just leave with that I set mine to the 24v cut-off but I endeavour not to get to that level in the first place because mine is LFP, I think with lead acid you should be fine with 24v.
On the LFP question, both are fine though I prefer the prismatic as I get to work with fewer cells but it's a matter of preference not performance

mank1234:


New Sonoff devices supporting DIY mode
https://tasmota.github.io/docs/Sonoff-DIY/

For models that don't support DIY mode, you can watch YouTube videos on how to do it.: just type flash Sonoff tasmota and search. Little knowledge of soldering may be required.

ojeysky:


It's LFP/li-ion so can do both 3.2 and 3.7 normal voltages

ojeysky:


I was actually referring to capacity in AH, what's the capacity of the 24v system, and how much capacity is consumed by the time you are at 24.3v?

ojeysky:

Interesting, 10A pwm means capacity is 100AH or less?

brainhack:
1.5KVA Inverter + 200 mah batteries (x 2) for sale (used - over 2 years old but still in top like-new condition cuz I never connected heavy appliances to it). I called a technician to test it recently, yes - still in top condition.

The last time I tested it myself with;
1) 40” Samsung Curve TV + Fan + X Box One S = Lasted about 13 hours (Note: 13 straight hours of gaming & X Box One S is an energy hungry device monster).
2) Just lights + Fan + charging Laptop + phones = Lasted over 30 hours.

You don’t have to take my word for it, bring your technician along for testing.

I don’t need it again cuz I am moving to an apartment building with 24 hours guaranteed electricity.

Last Price: 190k
Location: Lekki

brainhack:
1.5KVA Inverter + 200 mah batteries (x 2) for sale (used - over 2 years old but still in top like-new condition cuz I never connected heavy appliances to it). I called a technician to test it recently, yes - still in top condition.

The last time I tested it myself with;
1) 40” Samsung Curve TV + Fan + X Box One S = Lasted about 13 hours (Note: 13 straight hours of gaming & X Box One S is an energy hungry device monster).
2) Just lights + Fan + charging Laptop + phones = Lasted over 30 hours.

You don’t have to take my word for it, bring your technician along for testing.

I don’t need it again cuz I am moving to an apartment building with 24 hours guaranteed electricity.

Last Price: 190k
Location: Lekki

ceaser:

24v is 105 ah. But there's no way I can tell what's left of cap when it gets to 24.3v.

The PWM acts only as a LVD device, nothing beyond that. It does contribute any charging. The charging is by a 60A MPPT.

mktinsight:


Where can one get Yingli?