₦airaland Forum

dollarnaira:
@Gloryjoyeux

On point on:
warranty stuff
Battery deep usage
Plus the srne battery

I get worried not discharging my cells regularly. Right now, am discharging my lithium ion cells with my freezer despite the cloud, battery is stuck at 12.3v. The LifePO4 is just there staring - nothing to power. Shey b na me dey find energy .

Dem no dey pity LifePO4 oo. Discharge them well.

Nteogwuija:
12.3v, and your inverter isn't screaming low battery?

I don't know what's wrong with mine. My battery tends to discharge at a faster rate when it's at 12.7v and below. I'm using Cworth's 200ah battery.

I'm using Cworth's recommended charge settings of 13.8v for boost, and 13.6v for float.

Maybe there's something I'm not doing right. I don't know.

temi4fash:
. . . You are saying its safe to use our Life04 battery to 20%..

temi4fash:
This man get time for NL today..

Its being a while.. Hope you good boss?

Nteogwuija:
12.3v, and your inverter isn't screaming low battery?

I don't know what's wrong with mine. My battery tends to discharge at a faster rate when it's at 12.7v and below. I'm using Cworth's 200ah battery.

I'm using Cworth's recommended charge settings of 13.8v for boost, and 13.6v for float.

Maybe there's something I'm not doing right. I don't know.

GloryJoyeux:
Hi,

I can delve into a whole business lecture on why buying something because of 10 year warranty is a bad deal. If you are looking for real proven warranty track record go with Pylontech, BYD even Growatt batteries etc.

Please don’t ever fall into a warranty trap, buy a product because you are sure of the quality it delivers, value for money, reliability etc., never buy a product because of warranty! Warranty is just a plus not a main reason.

Supposed say, you buy a brands lfp battery that offers warranty and one cell goes bad. What if they tell you to send the whole pack to them in china but you will pay for shipping cost. Does that sound nice? But you technically still have warranty!

What if you send it and they use 1 year to rectify the issue, claiming they are waiting for parts! I mean they are still fixing it under ‘warranty’ but you will surely have to get another battery in the meantime.

Most times there is the Distributor vs Manufacturer factor, the distributor sometimes actually offers the warranty or handles warranty claims. Now what if the distributor exists the business in your region or country? There is no fallback, the warranty exists but the manufacturer will not honour it because you did not buy directly from them.

Like I said, I can delve into the economics of warranties if you wish, but don’t count 10 years warranty as a major plus.

Here is a link showing the inside of the battery, now tell me if it’s worth the premium.


https://www.youtube.com/watch?v=thsUFZdtaZU?si=qWDXBGYZfIh60q6D

Trippledots:
Not bad. I've installed this same 6kw hybrid in three phase configuration as UPS for an Electric Vehicle charging station, and so far so good.

I had one of the inverters spark multiple times when you Introduce grid supply, however the inverter output was still working. I later got it replaced on warranty, and since then no issues.

Nteogwuija:
12.3v, and your inverter isn't screaming low battery?

I don't know what's wrong with mine. My battery tends to discharge at a faster rate when it's at 12.7v and below. I'm using Cworth's 200ah battery.

I'm using Cworth's recommended charge settings of 13.8v for boost, and 13.6v for float.

Maybe there's something I'm not doing right. I don't know.

GloryJoyeux:
Hi again, sorry another long read.

Bottom Line (TL;DR):

Shallow cycling sounds safer, but with LiFePO₄, it’s often less efficient over time. If you’re always going from 100% to 80%, you’re aging the battery without getting much out of it. Deeper cycles — like 100% to 20% — may reduce your total cycle count, but they deliver way more usable energy over the long run.

Dam5reey:
My Cells are almost 4 years and this is the pattern I have been preaching. Me I charge as fast as possible and to Voltage that get my cells balanced.
100-20% on point, see attached is 30 days pattern, mostly charged and discharged to 20% range and cycles continues.
My Cells already Paid themselve and I still have as much as 95% capacity.

Nteogwuija:
12.3v, and your inverter isn't screaming low battery?

I don't know what's wrong with mine. My battery tends to discharge at a faster rate when it's at 12.7v and below. I'm using Cworth's 200ah battery.

I'm using Cworth's recommended charge settings of 13.8v for boost, and 13.6v for float.

Maybe there's something I'm not doing right. I don't know.

Jefferyzz:
Does anyone here know where I can get a non smart BMS for lifepo4 4s, something cheap, say $15 or less, if U AV a link or anything, kindly indicate.

Trippledots:
You didn't even factor in usable capacity. If you do that tubular cost will about double itself. So it's even costlier.

ManAdii:
Educate us again, what are the charge settings for your cells? I mean the bulk and float voltages.

dollarnaira:
The above scenerio is for my 2nd bank - lithium ion battery. Full at 12.5v.

For LifePO4, no capacity below 12.7v it is a free fall. To me bulk and float should be 14.0v.

AndroBlaze:
Different chemistries, you are comparing lithium ion with lifepo.

I also think he's using a 3s build on his lithium ion so at 12.3 his battery is practically full (80-90%) while at 12.7 (on most of these secondary chinese builds) indicates your battery is almost drained (30- 20%).

I also think you should take Damreesy's advice and charge your batteries higher, 13.8 regularly on a new chinese lifepo battery is low. The float is not important, aim to charge them up appropriately.

Nteogwuija:
12.3v, and your inverter isn't screaming low battery?

I don't know what's wrong with mine. My battery tends to discharge at a faster rate when it's at 12.7v and below. I'm using Cworth's 200ah battery.

I'm using Cworth's recommended charge settings of 13.8v for boost, and 13.6v for float.

Maybe there's something I'm not doing right. I don't know.

Dam5reey:
My Cells are almost 4 years and this is the pattern I have been preaching. Me I charge as fast as possible and to Voltage that get my cells balanced.
100-20% on point, see attached is 30 days pattern, mostly charged and discharged to 20% range and cycles continues.
My Cells already Paid themselve and I still have as much as 95% capacity.

GloryJoyeux:
Hey folks,

Just wanted to drop a solid recommendation for anyone considering the new Deye 6kW hybrid inverter. I recently got my hands on one and have been running it pretty hard to see what it’s made of — and honestly, I’m impressed.

First off, it’s parallel capable up to 16 units, so scaling up is no issue. Efficiency-wise, this thing is tight — I clocked idle power draw at just 30W when running a 1.6kWh load, and it only pulled under 100W even with 4kWh flowing. I also put max sustained load of 6kw, it took it like a champ! That’s some seriously optimized idle-to-load performance.

Now, let’s talk MPPTs. The Deye has a new feature under Advanced Settings called “MPPT Multi-Point”. Game changer. One of my PV strings gets shaded after 1PM, and normally performance drops off hard. But with this setting enabled, the inverter kept pulling full amps from the unshaded panels — like it knew exactly what to do. I ran the numbers — the gain was legit.

Sound-wise, it’s practically silent. It uses just one fan, which only kicks in at high loads. No annoying coil whine either — just a soft whoosh when it ramps up. I’m running 10,280W of solar into it, though it can handle up to 12,000W on dual MPPTs. It charges and discharges at 135A, and with an IP65 rating, it’s perfect for our dusty, humid conditions. Built-in WiFi made setup easy and remote monitoring is clean.

Small Catch:

Since it’s a newer model, Solar Assistant doesn’t support it yet, but I checked — it logs every 60 seconds and pushes data every 5 minutes to the Deye app/web. Accuracy is within 98% of Solar Assistant’s metrics, which is impressive for a stock system.

I also tested it with both closed-loop (BMS comms) and open-loop (voltage-based) battery setups. It handled both without breaking a sweat.

Cost & Efficiency:

It set me back ₦950,000, and honestly? The performance outshines Growatt, Axpert, Sumry, Welion, SMS, Sako — pretty much every other popular Chinese inverter I’ve tested.

One thing I’ve noticed with a lot of these cheaper all-in-one units is they use low-quality conversion components. For example, an SMS inverter I tested lost a constant 4.5kWh/day due to inefficiency. Doesn’t matter if you’re generating 9kWh or 30kWh — you’re losing a minimum of 4.5kWh daily. That’s 135kWh a month gone. Discharge efficiency was also poor — I was only getting 86–89% usable energy out of a 10kWh battery.

With the Deye? I’m seeing up to 96% usable, meaning 9.6kWh out of a 10kWh pack. That’s a huge difference.

Testing Other Brands:

I also tested the true output of other inverters, and most are overrated. A “6.2kW” Sumry unit (sms, welion, sako, powrmr, anern, victor max, daxtraumn etc) barely managed 5.6kW sustained, and a “10.2kW” SMS one capped out at 8.2kW. Turns out, they rate them based on PV input, not actual AC output — which explains a lot.

My Brand Ranking (So Far):
• #1: Deye – most efficient and best built
• #2: SRNE – decent performance, but not quite Deye
• #3: Growatt – solid, but a step below SRNE
• Way down the list: Felicity Solar and similar budget brands

That said, I do have beef with SRNE’s pricing. They’re trying to pass off their gear as premium because they’re UL-listed and in the U.S. market. But their 16kWh battery is way overpriced for what you get. It’s just REPT cells rated at 8000 cycles (anyone can get their hands on this cells, and no guarantee its actually grade A sef), and nothing special inside — no thermal padding, no fire suppression, no fancy BMS features. You can get better-built packs from Deriy, Bicodi, Gospower, Lvtopsun, or Valtech for less.

Quite a long read, if you have any questions you can ask me.

durodee:
Good afternoon house, i need advice on an issue at my place of work in the server room. A felicity CC + Techfine transformer based 5KVA inverter + YOHAKO 24v 5KVW LifePo4 battery system has been giving problem. The system will just trip off arbitrarily, usually at night. I suspect its due to battery OVD from the battery BMS. What are the options available apart from replacing the setup.?
NB: There is backup power from Gen or Grid most times. Main use is to keep server online pending either of the backup coming back

Penuelseun:
Nice review, now I am torn between going for the TBB 5kw which is a transformer based inverter and also has a low idle consumption and this Deye. Which would you suggest? Also what is the minimum solar voltage this Deye can work with and can it work with diy battery without comms support?

NoMoreTrolling:
Hi guys

I have a used 48v Gennex 5kw inverter for sale.

Pickup only, Victoria Island, Lagos.

Price: N300,000

Note: Max Charging Amps is 20amps.

0818-242-4406

FEGEITOK:
I have seen videos suggesting that aged AGM batteries can be revitalised.

But those were car batteries. Can thesame be done to SMF batteries.

Also if done, how many more months or years of service to expect?

My first set of AGM batteries are on their last legs.

emyfine08:
Thanks for reminding me. their two things my engineer told me that will be the case 1, maybe the battery is not charging well 2 the load management so he advise me to upgrade to 48v because of our load on it, for the reason I can not open it to reconfigure it we decided to sell it off. Am not explain all this things to convince anybody but I the situations now

Penuelseun:
I believe that the techfine has no editable low voltage setting, you have the option of buying a low voltage disconnect relay from AliExpress or getting another inverter that supports it.

durodee:
Many thanks. the issue seems to be OVER VOLTAGE DISCONNECT from the BMS . During the night with minimal usage, the inverter continues to charge.