₦airaland Forum

chris81964:

https://www.youtube.com/watch?v=4C5WqY9BRQE

Ogojohn:
Help is needed. What might be the cause of a new battery of 4 of 200amp capacity and a sine wave inverter of 48 volts capacity. The battery h charged through public power source but the charging capacity as indicated by the inverter doesnt exceed 57 percent. And this results that any time their is a power outage. The battery runs out soonest. What might be the cause of the battery not charging to up to 90 percent ? Is there anyway this can be rectified? Is the battery capacity not enough as this is meant to carry a flat of 3 room and a sitting room.

hardywaltz:
Hello House,
I have followed this thread for quite a while and i had commented some time ago but it was lost when Nairaland got hit last year.

I have had my Bluegate 2kva (24v) inverter since 2011 with 4 x 200Ah batteries connected in series and parallel. So theoretically i have 24 x 400 = 9600watts.

My Inverter is analogue and has a 20A charging which i have noticed is inadequate for the system coz 24v x 20A = 480watts/hr
which means it will take about 9600/480 = 20hrs (on the assumption of 0% DOD). My constrain is that i hardly have NEPA lite and I put on my Gen. from 5pm to 1am each day (8 hrs average) but I noticed that it doesn't really charge the batteries.

I just changed all my four batteries (200ah/Bluegate).


So I am looking for a good Inverter brand with higher capacity of charging 45amps or more
with digital display to show the % charging and discharge coz I intend to increase my battery bank and buy solar panels in the next few months so the Inverter should be able to support the incoming system.
Also the Inverter would be powered mostly by a 5kva Generator. (for the mean tym)

Please I will need ur help guys.
Thanks

@richmond77
@Akanniade
@GeorgeD1
and all

Ps:
Some one is offering me a Voltron inverter with the following spec
:
Main Features:
Output Power: 2Kw
Soft start capability for starting heavy loads
New power factor corrected (PFC) charging
Durable construction for long life under extreme environmental conditions
70 amp automatic three-stage battery charger (bulk, absorption, and float)
battery equalization with remote temperature sensor for increased performance
Low idle current (less than 1 watt) conserves energy when no loads are present
Built-in starting control circuits for two- and three-wire generator starting systems*
New digital display shows kilowatts (kW) when inverting and amps (A) when charging
Better thermal performance allows full output power to 50°C (122°F) without de-rating
High surge capacity starts more difficult loads and handles overload conditions reliably
Simplified controls with a snap-on cover that protects settings from being accidentally changed
Durable construction for long life under extreme environmental conditions

durodee:
Hello house: please what is the advantage of thin film panels over mono or poly panels?

schneid:
Top of the morning to you solar geniuses in the forum. Kindly view my sizing below and assist where possible.

Power requirement= 43200WH
At 97% efficiency/losses = 44536.08WH
Using 24DC system, AH required= 44536.08WH/24 = 1855.67AH

At 50% DOD = 3711.34AH
At 2days autonomy = 7422.68AH

Battery selection
Using 200AH batteries = 7422.68/200 = 37.11
approx 38pcs .
For 24 system (2 batteries in series) = 76pcs

Solar sizing
Power requirement = 43200WH
Assuming 5hrs of sunlight 43200WH/5 = 8640W
Using SW255w panels= 8640/255 = 33.8 = 34PCs

Solar arrangement
Strings = 2 x 24
Parallel = 17 of the strings.

Charge controller
Knowing that each panel is about 8.5A x 17 in parallel gives 137A. I want to use 2 nos of Outback FM80.


Pls kindly review my calculations and correct me before I do something crazy.

Thanks as I look forward to your professional responses.

MiCasa:
Mr. Newbie here. I have read so much from this forum that I consider it my solar-reference-library, albeit I learned a lot especially from the likes of George_D, Richmon74 and others, there are some that I am still confused about. Without wanting to clog the progressive wheel of this forum too much, I need help with a little dilemma that is bugging me.

I have had (almost a year now) Su-Kam 5kva/96v pure sine wave inverter with charging current of 10A to a Saturn battery bank of eight ( 12v200ah connected in series.

While I always wanted hybrid renewable energy with solar array the cost of PV has kept me at bay. Solarpanelstore.com has SolarWorld Sunmodule 275w at $279 (N46,872) plus shipping and that has gotten me seriously thinking to add solar panels to my system.

My concern/confusion are as follows:

1. Are there other sources of lower priced quality solar panels? I will defer to others
Lower quality is not always better. They last a long time get something good

2. How many of the 275w panels (if that’s the best I can get) do I need for my 19,200ah battery bank?
The number of panels you get is

3. How many panels do I connect in a string of series or parallel?
Your connection has to yield 96 V plus 30%

4. Considering that the inverter is 96v, what size, type of Mppt Charge Controller do I need to complement my system?
I will get a minimum of 60 AMPS.

Much appreciated.

fuelsaver:
We have different sizes. As a matter of fact we bought them from MTN equipment leasing and they are here in Lagos - Ogba Ikeja to be precise. If you are ok with the price. call for inspection.

fuelsaver:
400 NEW AND USED INVERTER BATTERIES FOR CLEARANCE SALES N10,000 EACH
CLEARANCE SALES ONLY!!!
CALL NEWMAN
TEL. 08036911968

jamace:
Tell us more about your products, prices inclusive. Thanks.

samflexxy:
Nice,briliant buh does it work well?

HesInMe: Could one bring in, as checked luggage on a flight, some of these solar power units (controller, batteries, inverter)?

I'm a newbie to this solar power thing but currently completing a house in a place in Abuja where power supply isn't that great and looking to install a solar power unit in the new house. I'm visiting the US now, and was wondering if I should buy the stuff there.

Also, any guidance as to the best brands for these units would be helpful.

Thanks!

obimind: Talking abt charge controllers, I must confess that I appreciate the level of enlightenment I've gotten from this thread. How can one distinguish btw an MPPT charge controller & a PWM
charge controller?

obimind: Yes I have a 1.4kva inverter,24 volts. 2 set of 200ah battery. The connection is in series.

durodee: I am on my tenth generator in 4 years ( both petrol and diesel) with a monthly budget of about 100K on fuel minus maintenance!! Oh I have suffered!
My experience with inverter systems have been turbulent (I started with the locally made ones - 3 fire accidents at least) and I could now see my numerous errors plainly!

Presently I am using a 1.4kva Sukam 24V system with two 165amp/ 10 hrs batteries and enjoying it. I will definitely upgrade in the next few weeks!

Pls do anybody have info for or against Century or Blugate 3.5 kva 24V inverters?

Thank you once again guys!

obimind: For those asking for my consumption... Presently I use four fans, two LED TV 32inches and five energy saver bulbs. Now my question goes again; What size of solar panel will suit my consumption. 2ndly what size of charge controller shld I go for?

fntekim: Actually, only 4800wh is available, as i never discharge my batteries beyond 50%.
My charge controller is an Outback flexmax 60, its in top notch condition.
48v system with my charge controller limiting at 60A, can handle a 2880w array.
From the logs, the highest instantaneous harvest i've seen is 1750w in best weather.

i agree i need to double my batteries, but with my array producing so little, my batteries will be undercharged.