NewStats: 3,261,761 , 8,175,052 topics. Date: Friday, 30 May 2025 at 12:39 PM 4i3n6x

Valtech Energy 48v 15kwh and 17kwh lifepo4 lithium batteries available at heavily discounted prices.
real capacity! made with JK 200A 2A active balancer inverter Bluetooth bms with communication ports ,200A Moulded case Dc circuit breaker (MCCB) 4pcs 200A pure copper battery terminals , sturdy metal box with CASTER WHEELS TYRES. e.t.c


pix below
clean installation of one of our batteries

whatsapp 08020574628 or telegram@ValtechEnergy

dollarnaira:


Oh great thanks.
Can the breeze be felt?
Just wondering how just 10w fan could be.

Yes it can be felt and can also be incereased but it's best for a small room or else u want two of it.

But it serves my kids which is why i bought it and saves energy.

You can also consider Qasa 20 watts 18 inches standing fan. It's better because of it's larger blade and still maintains 20 watts.

https://github.com/syssi/esphome-jk-bms. Easy to assemble and works very well. I have been running it for about 3 years with 2 jk-bmses.

xtremeidea:
Hello Good people, trust you all are doing well.

Is anyone here monitoring their battery via Home Assistant or Esphome?

I am having trouble trying to connect a JK BMS for remote monitoring. There's very little or outdated materials on the web.

Is there anyone who can help?

adrusa:
https://github.com/syssi/esphome-jk-bms. Easy to assemble and works very well. I have been running it for about 3 years with 2 jk-bmses.

As i write, i am still trouble shooting this. The problem is that for some reason unknown to me it wont connect to the BMS. I used a BLE scanner to retrieve the Mac address. It's a Deriy battry with JK BMS Hardware version - V15A.

Please can you share your Esphome code let me see if we are on the same page. Biko


here's my log, i just cant get it to work!


01:56:04][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:04][W][component:237]: Component jk_bms_ble took a long time for an operation (721 ms).
[01:56:04][W][component:238]: Components should block for at most 30 ms.
[01:56:09][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:14][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:19][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:19][I][safe_mode:041]: Boot seems successful; resetting boot loop counter
[01:56:19][D][esp32.preferences:114]: Saving 1 preferences to flash...
[01:56:19][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
[01:56:24][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:29][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:34][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:39][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:44][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:49][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected

adrusa:
https://github.com/syssi/esphome-jk-bms. Easy to assemble and works very well. I have been running it for about 3 years with 2 jk-bmses.

are you using wired via the ports or wireless via BLE?

Please I would appreciate if you can put me through on how you connected yours. My esp32 won't just connect to the Mac address. I have swapped multiple esp32s. Same issue.

The app connects and works well.

xtremeidea:


Yes it can be felt and can also be incereased but it's best for a small room or else u want two of it.

But it serves my kids which is why i bought it and saves energy.

You can also consider Qasa 20 watts 18 inches standing fan. It's better because of it's larger blade and still maintains 20 watts.

You nailed it.
Thank you very much.

gbosah91:
Almost all Jinko s are out of stock on the Fouani website. Is there any other place I can get Jinko s?

555w available
Ikorodu Lagos

I am guessing they already did energy audit before settling for a 5kva inverter. If no, the first thing is to do proper energy audit.


The next thing is to avoid that installer.

meohio7777:
Greetings everyone,

I've quietly followed these threads and thank the knowledgeable contributors for their valuable insights.

I am researching on behalf of my dad, who plans to switch to solar power for his home. He recently received a vague quote that is missing several key details.

I have encountered reputable brands such as Growatt, SRNE, and Victron and would like to choose a quality brand that will stand the test of time for this project.

I am also open to connecting with someone trustworthy and genuinely interested in managing and executing this installation.

Kindly post your contribution here. I have attached the quote for everyone's review.

The location is Epe, Lagos.

Here is a list of appliances that need to be powered:
1. Fridge and freezer (1 unit)
2. Freezers (3 units)
3. Borehole pump (1)
4. Room fans (4)
5. Parlor fans (2)
6. Dining room fan (1)
7. Children's parlor fan (1)
8. Televisions (2)
9. Washing machine (1)
10. Water heater (1)
11. Game console (1)
12. Numerous light bulbs 💡

Additionally, we plan to purchase four solar light poles for the front and back of the house.

Thank you for your assistance!

meohio7777:
Greetings everyone,

I've quietly followed these threads and thank the knowledgeable contributors for their valuable insights.

I am researching on behalf of my dad, who plans to switch to solar power for his home. He recently received a vague quote that is missing several key details.

I have encountered reputable brands such as Growatt, SRNE, and Victron and would like to choose a quality brand that will stand the test of time for this project.

I am also open to connecting with someone trustworthy and genuinely interested in managing and executing this installation.

Kindly post your contribution here. I have attached the quote for everyone's review.

The location is Epe, Lagos.

Here is a list of appliances that need to be powered:
1. Fridge and freezer (1 unit)
2. Freezers (3 units)
3. Borehole pump (1)
4. Room fans (4)
5. Parlor fans (2)
6. Dining room fan (1)
7. Children's parlor fan (1)
8. Televisions (2)
9. Washing machine (1)
10. Water heater (1)
11. Game console (1)
12. Numerous light bulbs 💡

Additionally, we plan to purchase four solar light poles for the front and back of the house.

Thank you for your assistance!

You need a 7kva+ inverter, and even at that try not to do something silly like run your heater and submersible pump at the same time as other loads. Either use heater, or the pump. Not both at once.

Minimum PV array this installation needs is between 4500-5000w. Minimum.

Do you plan on having your fridges and freezers on 24/7? If yes, you need a 15kwh Lifepo4 battery. Also, if yes, you'd also need to bump up your PV array to around 7000w.

Lastly, as the gentleman above said. Ditch that installer.

BiigTee:
Chief, pls what's the cost of this setup?

500-560k for Inverter..
Battery is floating around 1.8M
s is aroun 130k per unit
3M for Materials.

QuoteJust1nce:
Hello house, good evening. Looking towards a bit of recommendation or ideas.
I'm seeking to increase my setup. Currently it's

s: 8x 580W Jinko = 4.6kWp (On a good day i get around 4kW instantaneous, which serves good for daytime including inverter ACs usage from as early as 10am till 6pm)
Batteries: 2x PylonTech 5.12kWh = 10.24kWh (Since i am grid-tied (Band A), this hardly goes below 85% DOD cycled)
Inverter: Growatt SPF 5000ES.

The inverter's max input voltage is 450V which limited me to a a single string of 8x s = 408 VOC. One extra would have crossed VOC with almost 10V because each is 51.02 according to specs.

I am looking to do the following:
Add 1x PylonTech 5.12kWh to make total battery 15.36 kWh
Change the inverter to the SPF 6000 ES Plus which s up to 500V and 8kWp array

Doing this means I can then add 10 extra s in a 9S2P config. VOC will go up to 459.18V
and theoretical yield will be 10.4 kWp. If the s, on a good day, can do 85% yield, that's about 8.8kwP but the inverter only s 8k; so about 800W best case (or 1.6kW worst case) is lost to overling.

Am I on the right track?, or should i consider an inverter than can up to 10kWp array? such as the Growatt SPH 5000TL-BL-UP 5kW capable of doing 9.5kW array and up to 550VOC. Except this is 5kW and not 6kW.

At this point, isn't it better to do the SPF 6000 ES Plus since it can be paralleled and thus can do 2x (12kW power; 1000 VOC, 16kWp) assuming I will do two banks of solar input?

Thank you.

You cant do 9s2p on the growatt spf6000es. The spf6000es has a current limit of 16A each on each mppt string. The jinko 580w produces around 14amps of current, 9s2p will produce 28amps, unless you intend doing 9series on each pv input/mppt. Correct me if I'm wrong tho. I use same config as you, spf5000es with 9pieces 580w. Max voltage ive got is 431v. For the spf6000es i believe each string should be 500v 16amp each, for individual mppt.

Good morning everyone, please who has a digital wattmeter for sale?

I greet the bosses in the house.

Please, how much can set up a sufficient solar installation for 2 laptops that will be plugged in from 9am to 7pm daily?

Tenshades:
I greet the bosses in the house.

Please, how much can set up a sufficient solar installation for 2 laptops that will be plugged in from 9am to 7pm daily?

If not gaming laptops, you effectively just need about 90w.

Cheap sachet inverter
Cheap PWM charge controller
One 350w
Can probably get away with a used tubular battery

No reason why this should cost more than ~300k.

HeavenlyBang:


If not gaming laptops, you effectively just need about 90w.

Cheap sachet inverter
Cheap PWM charge controller
One 350w
Can probably get away with a used tubular battery

No reason why this should cost more than ~300k.

Ok...not gaming laptops. Just old toshiba and lenovo laptops

How about new battery

Tenshades:


Ok...not gaming laptops. Just old toshiba and lenovo laptops

How about new battery

But why? Unless there are loads you're not telling us about. Or you plan to add more load in the future?

If you want a new battery, just buy Cworth's cheap 100aH lifepo4 battery that's under 200k.

HeavenlyBang:


But why? Unless there are loads you're not telling us about. Or you plan to add more load in the future?

If you want a new battery, just buy Cworth's cheap 100aH lifepo4 battery that's under 200k.

No extra loads for now....I also plan to expand later

HeavenlyBang:


If not gaming laptops, you effectively just need about 90w.

Cheap sachet inverter
Cheap PWM charge controller
One 350w
Can probably get away with a used tubular battery

No reason why this should cost more than ~300k.

Oga we dey preach against tubular. Why na?

dollarnaira:


Oga we dey preach against tubular. Why na?

I tire

xtremeidea:


are you using wired via the ports or wireless via BLE?

Please I would appreciate if you can put me through on how you connected yours. My esp32 won't just connect to the Mac address. I have swapped multiple esp32s. Same issue.

The app connects and works well.

Bluetooth.

xtremeidea:


As i write, i am still trouble shooting this. The problem is that for some reason unknown to me it wont connect to the BMS. I used a BLE scanner to retrieve the Mac address. It's a Deriy battry with JK BMS Hardware version - V15A.

Please can you share your Esphome code let me see if we are on the same page. Biko


here's my log, i just cant get it to work!


01:56:04][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:04][W][component:237]: Component jk_bms_ble took a long time for an operation (721 ms).
[01:56:04][W][component:238]: Components should block for at most 30 ms.
[01:56:09][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:14][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:19][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:19][I][safe_mode:041]: Boot seems successful; resetting boot loop counter
[01:56:19][D][esp32.preferences:114]: Saving 1 preferences to flash...
[01:56:19][D][esp32.preferences:143]: Saving 1 preferences to flash: 0 cached, 1 written, 0 failed
[01:56:24][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:29][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:34][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:39][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:44][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected
[01:56:49][W][jk_bms_ble:254]: [98:DA:20:06:C7:D6] Not connected

Share your esphome yaml

.

Stabilizers for sale
1. Qliink 1kva Automatic stabilizer 20k
2. Haier thermocool TEC 2kva digital stabilizer 40k
3. Brand new sumec fireman digital stabilizer with usb port 50k
4. 600w bluegate ups battery needs replacement 10k

All in perfect condition
0-8-0-3-3-7-2-6-8-6-1

dollarnaira:


Oga we dey preach against tubular. Why na?

Has to be as cheap as possible, and no one builds the kind of lower capacity lifepo4 batteries that would fit into that.

Since he turns off at 7pm, that's effectively just 180wh.

kuss:
Stabilizers for sale
1. Qliink 1kva Automatic stabilizer 20k
2. Haier thermocool TEC 2kva digital stabilizer 40k
3. Brand new sumec fireman digital stabilizer with usb port 50k
4. 600w bluegate ups battery needs replacement 10k

All in perfect condition
0-8-0-3-3-7-2-6-8-6-1

Hello guys. I saw this from a friend. The inverter capacity is 1400VA/1000W. 4 s and two batteries.

* firstly how good is that setup snd how good is that inverter.

*secondly he said he has no idea on how to charge the battery separately while using power grid separely. (That's when there is light). The only way the batter charges is when the inverter is in use and nepa brings light. Is there a way the battery can be charging separately while you're using power grid at the same time?

Thanks for your input.

adrusa:


Share your esphome yaml

Here it is Sir. attached.

.

Dam5reey1 please what range is your installation fee for lagos residents

@HeavenlyBang, please can we talk on WhatsApp? 0-8-0-7-3-3-8-0-0-3-5.

Why is no one talking about oraimo inverters and batteries?

Tekenny:
@HeavenlyBang, please can we talk on WhatsApp? 0-8-0-7-3-3-8-0-0-3-5.

Ok, boss.

ManAdii:
Why is no one talking about oraimo inverters and batteries?

People wey never fit make competent power bank or phone charger?