Feflo's Posts

Nairaland Forum › Feflo's Profile › Feflo's Posts

1 2 3 4 5 6 7 8 ... 57 58 59 60 61 62 63 64 65 (of 82 pages)

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 11:29am On Apr 19, 2016

cool318:
So we still have Good & Reliable People in Nigeria. Feflo you are a Man of your Words. Recieved them in Perfect Working condition. They have already started Charging my Batteries at an Alarming Charge rate. Waooooh.
Kudos Feflo Engineering

Many thanks

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 11:23am On Apr 18, 2016

These chargers are on their way Port Harcourt

1 Like

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 7:10pm On Apr 17, 2016

Installation concluded, preparing for the next phase in the Abuja Clinic

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 7:07pm On Apr 17, 2016

Inverter and battery connected

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:58pm On Apr 17, 2016

Controls: Changeover, Fusebox, Solar Charge Controller

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:57pm On Apr 17, 2016

Locally made 5kva 48vdc pure sinewave mesh Inverter

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:55pm On Apr 17, 2016

Locally made 4 batteries rack

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:54pm On Apr 17, 2016

2. 4pcs 300w poly solar panels

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:53pm On Apr 17, 2016

Pictures from the just concluded Installation at Nordica Fertility Clinic, Adeniran Ogunsanya, Lagos.

1. 4pcs 12v 200ah Mercury Deep Cycle batteries

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:03pm On Apr 15, 2016

Trippledots:
can you supply me battery chargers? lets discuss pls. how do I contact you?

I can of course, call me on 08023662352 or 08165304602.
Many thanks

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 7:37am On Apr 13, 2016

Inverter/Solar control

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 9:09am On Apr 12, 2016

Trippledots:
feflo

do you still sell those type of inverters you started this thread with? I noticed the pix u upload now have diff brands other than those ones. what's y0ur experience using/installing those ones? complaints.
thanks.

Thanks for your observation, its true that for a long time now i have suspended sales of the transformerless inverters due to the following reasons:
1. The major reason was that i find it difficult sourcing for very good chargers. The inbuilt charger is so small about 8amps, so what i do is to sell with an external charger of about 30amps to complement the inbuilt and that has been a major challenge to me until recently. The cost now is almost at par with the transformer type that has very high inbuilt chargers.

2. The Installation is a liitle bit cumbersome in that for each load that goes on the inverter, you have to locate its neutral cable. If you are putting like 10 different points on the Inverter, you will look for the neutral of each and thats a bit challenging unlike the transformer type Inverters that you just pick neutral from the neutral bar on the Distribution Board.

Though i still provide support for those that bought from me. I sold so many through this forum and its only logical for me to continue supporting them.
Many thanks

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 8:29pm On Apr 11, 2016

1.5kva safepower without rack

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 1:45pm On Apr 11, 2016

cool318:
Yes Boss, will try but you know that am still a Learner.
I will go for the 24v 50amps cos the Battery in my custody is 200 Ah. How much is it even if you dont have it now? No where else you can procure it for a client?

The 24vdc 50amps is always available at 12K.

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 10:44am On Apr 11, 2016

cool318:
Thanks Boss. Will upload pics of mine when through.

But how much do you sell the 12v 50 amps charger? Cos am really going to need it. Hope its reliable & Durable. Is it a Smart Charger with LCD screen?
Thanks

Make sure it's more presentable than mine (that's a challenge). The charger is 24vdc 50amps. Very rugged and reliable, it's a smart charger without LCD screen. The 12vdc that I have for now is only 10amps. It's not a smart charger but also very good.

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 10:12am On Apr 11, 2016

cool318:
Thanks a Million for your kind & prompt response.
The Batteries i want to use is 2(100AH)= 200AH
I will like to know if there is any other component upgrade on the PCB that will make it work for Long like a typical Inverter? I will continue 2moro.

There's no other component upgrade on the PCB. With this your UPS will continue working till the batteries are drained. I have used such conversion for 48hrs non stop even with a fridge on it. (referring to the 1.5va APC)

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:14pm On Apr 10, 2016

Safepower 3.5kva 48vdv

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 4:01pm On Apr 10, 2016

feflo:
@cool318 Many thanks, it gladdens my heart to know that you have made attempt at doing it yourself and
i really salute your efforts too.

1. 2pcs. of 12vdc batteries connected to give 24vdc. You did not state the AH rating of the batteries. I'll assume
200ah for this example. The stored energy/power = 24vdc x 200ah = 4800whrs. That value
gives you the total potential wattage of the batteries but in practice it is far less than
that. Your inverter is not 100% efficient, the batteries are not 100% efficient, the cables
have their losses along the line and so many other losses to be considered.
If i am to calculate the amount of time a total load of 100watts will run on a 24vdc, 200ah
Battery bank.
Battery stored power = 24vdc x 200ah = 4800whrs.
Batteries DoD of 80% = 4800whrs x 0.8 = 3840whrs
Fudge losses ( other losses) = 3840whrs x 0.75 = 2880whrs
Run time of 100watt load = 2880whrs/100w = ~ 28hours.
2. Locating the DC terminals can be a little tasking, it depends on the make of the UPS you are
converting like bluegate, maxtron, mercury, APC etc. I have attached two pictures of a bluegate
and Binatone UPS indicating the DC points on the PCB. Check the picture and compare with your own
PCB.
N.B To make it easier for you, connect the negative leg of the fan to the negative battery
cable and look for the positive terminal on the PCB. Remember, you must connect it to a point that
will cut off when you switch off the UPS/INVERTER otherwise your fan will continue working
until you disconnect the battery.
3. The size of cable depends on the UPS/INVERTER size, for a 650va, 2.5mm is ok but for a
1.5va that will carry a fridge 4mm is ideal. The DC cables from the UPS goes to the battery
so also the charger cable.

1 Like

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 3:59pm On Apr 10, 2016

cool318:
Hi Engr Feflo, i salute you for your spirited efforts to Humanism.
I have a Maxtron 24v (2batteries). What is its maximum output wattage.
I have tried locating the DC terminals on the PCB but couldnt. Can you throw more light on that area?
Thirdly, the two terminals to be extended, is it better to use 2.5mm flex or Single strand wire & where will it be connected ( is it on the Charger or Battery.
Thanks a lot

@cool318 Many thanks, it gladdens my heart know that you have made attempt at doing it yourself and
i really salute your efforts too.

1. 2pcs. of 12vdc batteries connected to give 24vdc. You did not state the AH rating of the batteries. I'll assume
200ah for this example. The stored energy/power = 24vdc x 200ah = 4800whrs. That value
gives you the total potential wattage of the batteries but in practice it is far less than
that. Your inverter is not 100% efficient, the batteries are not 100% efficient, the cables
have their losses along the line and so many other losses to be considered.
If i am to calculate the amount of time a total load of 100watts will run on a 24vdc, 200ah
Battery bank.
Battery stored power = 24vdc x 200ah = 4800whrs.
Batteries DoD of 80% = 4800whrs x 0.8 = 3840whrs
Fudge losses ( other losses) = 3840whrs x 0.75 = 2880whrs
Run time of 100watt load = 2880whrs/100w = ~ 28hours.
2. Locating the DC terminals can be a little tasking, it depends on the make of the UPS you are
converting like bluegate, maxtron, mercury, APC etc. I have attached two pictures of a bluegate
and Binatone UPS indicating the DC points on the PCB. Check the picture and compare with your own
PCB.
N.B To make it easier for you, connect the negative leg of the fan to the negative battery
cable and look for the positive terminal on the PCB. Remember, you must connect it to a point that
will cut off when you switch off the UPS/INVERTER otherwise your fan will continue working
until you disconnect the battery.
3. The size of cable depends on the UPS/INVERTER size, for a 650va, 2.5mm is ok but for a
1.5va that will carry a fridge 4mm is ideal. The DC cables from the UPS goes to the battery
so also the charger cable.

1 Like 2 Shares

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 5:37pm On Apr 09, 2016

Battery arrangement in an enclosed plàstic rack

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 5:18pm On Apr 09, 2016

Safepower inverter, 24vdc 1.5kva with enclosed plàstic rack

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 1:35pm On Apr 09, 2016

orlard3:
Hw much do u sell ur batteries 12v, 200amp

12v 200ah (ROY) - 62k
12v 200ah (Mercury). - 57k

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 9:49am On Apr 09, 2016

2kva cyberpower inverter

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 7:48am On Apr 09, 2016

Weirdman:
how much is everything in the pic above??

The price is stated. N280k. It's a complete solar solution

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 8:48pm On Apr 08, 2016

feflo:
Complete solar solution for lighting, electronics & fans

520w solar panel (4pcs. 130w solar panels)
12v 200ah battery
12/24v 50A controller
Solar rack & Installation
1kva power inverter

Total cost - N280k

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 11:21am On Apr 07, 2016

lakefist:
I will call you

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 10:00am On Apr 07, 2016

lakefist:
After testing your UPS converted to Inverter, i am convinced. Now i need bigger ba3 and charger for my 12v UPS/Inverter

Battery & Charger are always available. Contact me for best prices. Many thanks for your recommendation.

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 10:23am On Apr 05, 2016

feflo:
Your question depends largely on two variables: Battery capacity and type, then the total load on it.

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 2:57pm On Apr 04, 2016

mansionmbn:
How long can this last after charging?

Your question depends largely on two variables: Battery capacity and type, then the total load on it.

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 8:59am On Apr 04, 2016*

650VA APC UPS converted to inverter. Can deliver up to 400W continuous power.

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 6:22pm On Apr 03, 2016

martinz1:
Ok. Thanks for clarifications

Thanks too for the interest.

Technology Market › Re: World's Smallest Power Inverter by feflo(op): 5:23pm On Apr 03, 2016

martinz1:
is it automatic in d sense that it stop charging when the battery is full, and sigify that battery is full
thanks

Yes, it cuts off but it does not signify. This is how it works. The output voltage is 27.2vdc, when connected to a 24vdc battery system, it attempts to take the battery to its cut off point of 27.2vdc and it stops charging when it reaches this threshold point.

1 2 3 4 5 6 7 8 ... 57 58 59 60 61 62 63 64 65 (of 82 pages)