NiyiOmoIyunade:
The tubes might be a more efficient energy transfer mechanism than a DC element immersed in water.

I believe solar shop in Lagos VI have the kind of water heater you seek where PV panels provide power to a DC element which then transfers its heat into the water.

I use a 300L Ariston with the panels and tube attached to the tank.

ojeysky:


Anyone using this kind of DC pumping machine? I like to specifically know if it's a worthwhile investment or whether going the normal AC pumping is better

ceaser:


450 watts 72 volts is the spec on that. That's gonna be a whole lot of panels. Although if the 60 meters lift spec is what it can give, then it may be worth it.

eleojo23:

I learnt the brown carton type is made in Korea, right?
Please how would you rate the two in terms of performance?

ojeysky:
Looks like lithium market is going to be interesting this year, ofcourse with expectation for some disappointments as well.

Dam5reey:
LifePO4 are still overrated, Expensive and complicated at the stage..

Until it becomes widely used that any inverter can charge it effectively like the Lead acid, till then

Just do proper sizing, Lead acid is more than sufficient at 30-50% DOD and complete charge.

ojeysky:


Anyone using this kind of DC pumping machine? I like to specifically know if it's a worthwhile investment or whether going the normal AC pumping is better

earthrealm:


am considering it as well, however, saw lower wattage on aliexpress, OP posted 450w, i saw 200w, 250w 12v/24v etc. only thing you should be aware of is the low water yield, 600 to 1000liters per hour

ojeysky:


Thanks I didn't even pay close attention to the voltage..... that's at least 3x300w. I guess DC pump is not yet an option for borehole then

remizvxcq:

Indeed 2020 will bring “interesting times” in the independent power economy of Nigeria. Note that the Chinese saying “may you live in interesting times”, is not meant as wish-you-well and easy fortune; it is a caution for preparedness and fortitude.

In the coming manna of LiFePO4, there will be hierarchy of quality and competency in the components, wiring, and software programming of the “energy storage systems” (ESS). LiFePO4 and other lithium based batteries are part of ESS, they are aspects of integrated systems; they are not stand-alone boxes that can just replace your existing lead-acid battery, kWh for kWh.

Beware the “affordable” lithium battery! These will likely flood Nigeria soon as they will be priced at or below ₦250,000 per 2.4kWh, attractive enough to compare with the ₦120,000 - ₦175,000 price points of the average-to-leading 12v 200ah lead-acid batteries. Many of these "drop-in, lead-acid-replacement" lithiums are sold in sealed enclosures , with battery management systems (BMS) that are either inadequate in their tolerance of variable current draw, high operating temperatures, frequent power surges and outages, or simply lack a means of communicating with external controls , or of reprogramming the BMS to suit the particular strengths or deficiencies of the intended battery charger .

How do you plan on managing the tight-margins on charge/discharge voltages demanded by lithium-based batteries or ambient operating temperatures above 35ºC in high humidity / high dust conditions?! In fact, you will likely need to ditch all you used to hold important for handling lead-acid-batteries, and throw away your lead-acid battery charger that claims to have a “lithium algorithm”, if you are to minimise expe₦sive lessons.

On the other hand, the price of lead-acid batteries should lower to more realistic levels. For years, the lead-acid battery mafia has managed to hold prices artificially high. That old game plan may change because the majority of the incoming LiFePO4, which will likely use grade B cells, zero warranties, and compromised BMSes to achieve affordable prices, may yet still deliver superior performance per kWh to compare with the over-rated AGMs or the finicky Gels, or the space-hugging FLAs.

But, please, don’t believe in “LiFePO4 can deliver over 3000 daily cycles at 100% DOD”!

Dam5reey:
LifePO4 are still overrated, Expensive and complicated at the stage..

Until it becomes widely used that any inverter can charge it effectively like the Lead acid, till then

Just do proper sizing, Lead acid is more than sufficient at 30-50% DOD and complete charge.

zeanslim:
It's not a fine work, but it's over 27ah 18650 battery pack 3s 15p

generalstingz:
AC / DC 18" Standing Fans Available @ 15k

mahkanjuh:


Please, can you explain this your set up and the what's the total capacity
Explian better please

generalstingz:
AC / DC 18" Standing Fans Available @ 15k

ceaser:


Ha! Bro, are you the one selling?

Because it's a lot cheaper somewhere o.

Not to spoil market o.

mahkanjuh:


Please, can you explain this your set up and the what's the total capacity
Explian better please

ceaser:


It's what he said.

Around 27ah @ 12v.

3s 18-65-0 gives 12.6v @Full charge. It's 14p, and assuming each battery to be 2000mah gives you around 28ah.

spartacus11:


Boss please i still need some more explanation on this if i need 12v system from dis battery that will be 3.7-4.2 (3s) 11.1-12.6 at full charge

Lets say i need 80ah or 100ah how many pieces of this battery will i get lets say its 2000mah per piece.

zeanslim:


30- 18650 cells in total (norminal volt per cell is 3.7 and 4.2 when fully charged)

3, 15-18650 cells connected in parallel are connected in series. 3s 15p to make 12.6v = 4.2v * 3s

Each 18650 cells capacity is between 3000-2600mah

15p * 2600mah = 39000mah = 39ah

3s bms board to manage the charging and discharging of battery cells, thus I can easily charge with any good 12v charger eg cheap Chinese solar charge controller

Because I have not really tested it's full capacity I rated it 27ah+, but have ran that QASA standing fan on full for 8hours (24watts) .. only for the battery to drop to around 12.4.

When I have time I will run full drain test.

If my maths is wrong feel free to correct

ceaser:


Ha! Bro, are you the one selling?

Because it's a [b]lot cheaper [/b]somewhere o.

Not to spoil market o.

spartacus11:


The red highlight is where u an confused u said 30 pieces in total

15 pieces in parallel is it 15p×2 to make the 30 pieces, abeg in lay man explanation break it down thanks

Because i need 12v not less than 60ah or 80ah but not more than 100ah of this lithium set up

konami001:
Are there any noteworthy sellers of the charge controller and solar panels around in naija? Would love to know prices of each compo,

generalstingz:

The price tag is negotiable

justcallmenuel:
3kva felicity hybrid inverter available, #160000. Call/WhatsApp us on 08168986461

BetaTechnicians:

Snap the side that has the full specs so we can see more details.