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Technology Market / Re: LG 1250W Home Theater System LHD687 For Give Away Price - Sold by bigrovar(m): 5:31pm On May 15, 2022 |
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Technology Market / Re: LG 1250W Home Theater System LHD687 For Give Away Price - Sold by bigrovar(m): 8:06pm On May 12, 2022 |
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Technology Market / Re: LG 1250W Home Theater System LHD687 For Give Away Price - Sold by bigrovar(m): 2:39am On May 11, 2022 |
Enddy50ty: No other picture. You can. Google the speaker to see the review. |
Technology Market / LG 1250W Home Theater System LHD687 For Give Away Price - Sold by bigrovar(m): 11:45am On May 10, 2022 |
I got this Home theater system as part of a promo from Fouani shop (LG Sole authorized dealer in Nigeria). The Home theater system is brand new. I opened the box to test that it is working and put it back. I got the speakers yesterday but I did need it since I already have samsung speaker and didn't need this one. It is going for 120k. The system is a 4.2 surround speaker with powerful dual subwoofer The sound power is 1250w and produces earth shaking sounds and with heavy bass. Convenient connectivity Listen to the radio or play a DVD or CD connected through an Aux or HDMI cables and USB. With various connectivity options, setup your speaker to meet all your entertainment needs. The market price for this speaker is 160-180k The speaker has the 2 year warranty from LG. Abuja 1 Share
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Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 4:56am On May 06, 2022 |
darediamond: No vex. Peace and love from my side. 7 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 10:02am On May 05, 2022 |
darediamond: It is a good thing you were well thought in school. it is all clear to see. 2 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 10:00am On May 05, 2022 |
bigrovar: Just to add, one more reason for recommending a 2S3P configuration is to allow the controller to be more efficient and reduce loses when doing dc to dc conversation. Just ensure that you have the right wiring to ensure voltage loss is reduced. The length between your controller and cc should also be factored in. If you have the panels installed on a roof 3 floors away, or about 10+ meters, then you might want to consider a 3s2p config. This means more voltage is send down the wire and you can spend less on wiring and ensure voltage loss is minimal. 3 Likes 1 Share |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 9:55am On May 05, 2022 |
ObabyObaby: The key thing to watch out for is the voc of your charge controller. That is the highest input voltage it can take from a pv. You need to ensure that whatever string you go for, the string voc must never come close to or exceed that of the cc. 145v doesn't give you much room, and for some of this Chinese controllers you don't want to go near their limits hence the reason for a 2 in series string and then parallel the 3 strings. I am putting this here so that those reading would understand the logic behind the 2S3P recommendation. 5 Likes 1 Share |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 9:18pm On May 02, 2022 |
kola42:I doubt that product is still in production, unless you are using an old used version. Yes it allows you to add a solar panels (comes built in with a pwm solar charge controller) There is a review here https://upsinverterinfo.com/sukam-brainy-solar-inverter-price-with-panels.html This was one of the devices that pulled me into solar. My initial plan was to setup one for use. I ended up not going with it but it was quite close. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 9:08pm On May 02, 2022 |
darediamond: Bros I have one advise for you. Stop talking or offering advise on solar, battery or electricity generally.. especially offline. When you do things like this online it can easily be spotted and called out before it does damage. The worse case is when you spread this complete falsehood to family and friends many who might look up to you. Na god I take beg you. Don't take it out of the next. This came from a place of love. 14 Likes 2 Shares |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 2:01pm On Apr 19, 2022 |
truthbetold22: This is totally unnecessary and uncalled for. Please let us make this place civil. We leave in a free market country anyone is free to put price on their items and the market will decide. No one is a monopoly on lithium so I don't understand. Calling someone greedy because he did not sell at your price is just being entitled. Everyone should sell at a price they are comfortable it. No one is forced to buy. If you set at a high price and no one buys from you, no one will teach you to adjust. This is free market, if you can offer batteries at a cheaper rate by all means and if you want to share information on how people can buy batteries cheaply by all means share and move on with you life. Market is about willing buyer willing seller. 6 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 1:50pm On Apr 17, 2022 |
NiyiOmoIyunade: Thanks. I essentially followed your back channel advise on earthing. Including using Ground Enhancement Materials in place of the traditional charcoal and salt. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 12:45pm On Apr 17, 2022 |
NiyiOmoIyunade: Thanks for the compliment boss. I actually connected the eart lugs and by extension the cable to the PV frames not to the mount frame. All the writing said to connect to PV frame. I however have it connected to a bonded earth rod. I have 3 earth rods all bonded together within a 3sqm area. The PV earth cable terminated to an earth bus bar from one of the earth rod. I just made sure the cables were straight with little curve or right turns. The cable went from the roof straight to the ground terminal directly under the panels. What is your take on this setup. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 6:41am On Apr 17, 2022 |
Finally completed the upgrade to the solar setup. For context I started the solar journey with 2 tubular batteries and a 1.2kw 24v Sukam inverter tired to a 480w ground mounted solar system. Over the past 6 years. The system was gradually scaled to what it is today. 5kw array, 5kw Inverter and 14kwh lifePo4 batteries. The last set of work was to ground the panels. I got some panel ground lugs which were used with 16mm bare copper cable and terminated to a ground terminal. I also configured a raspberry Pi for gathering system logs and usage for us for a new solar dashboard available here http://energy.openculture.org.ng:8080/dashboard/view?id=46 What is left now are small finishing off work. 10 Likes 1 Share
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Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 6:32am On Apr 17, 2022 |
NiyiOmoIyunade: I do agree with this but then it has to be said implementing the above. An array that can resupply your batteries 50% dod in a day and using tech to smartly feed your battery with just what it needs. All these are not options for a cost sensitive system. And over sized array is more money coupled with using it with gears from Victron ecosystem which are some of the most expensive around. The question to then ask is. If am going to be spending all that money on an off-grid setup. I won't use LA. I am and have always been for linking economics with solar. If you are on a budget the focus area should be on your consumption. Limit energy consumption so that you can cycle your LA at about 35-40% dod that way you can have a reasonably sized panel that can effectively charge your LA battery. This would ensure you get the best from your battery and good ROI. This was my secret for getting the most from my LA batteries. After 3 years the decommissioned Tubular battery can still their full capacity at C20 Discharge without going below 11.5v per battery. The average cycle was 40% dod and where always too charged every day. 2 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 3:47pm On Apr 16, 2022 |
NiyiOmoIyunade: I just need to add, while I do agree with all your said. It still needs to be emphasized that your over night usage is still limited by how much would allow you fully charge the battery. The lower you go the more difficult it would be to fill up the next day leaving your battery in a circle of partial state of discharge which is very bad for LA batteries. 2 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 4:58pm On Apr 15, 2022 |
As part of my system upgrade, I decided to use my Ipowerplus 5kva Inverter as a second charge controller and terminated the new array of 2kw to it. I would never have done this before now but I had to keep things within budget. The axpert MKS series of inverter which the Ipowerplus, Gennex and likes are based on has a known bug MPPT Bug which causes the inverter to switch to float early under certain conditions. The bug pretty much makes them completely unreliable and not fit for purpose because it has the potential to damage your batteries leaving it under charge. In my research I noticed that the community around the axpert series released a custom firmware which fixes this bug and add more functionality to the inverter. One of the functionality is add is to make it more compatible with Lithium battteries. I flashed my inverter to these firmware and the result has been amazing. You can read more about this firmware and other important information about this type of inverter here https://forums.aeva.asn.au/viewtopic.php?f=64&t=4332 3 Likes 1 Share |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 4:52pm On Apr 15, 2022 |
NiyiOmoIyunade: Absolutely, if you note I was referring to Tubular which seem to the the fad these days. Yes AGM has higher rate of charge discharge compared to Flooded batteries like the Tubular type. In fact in certain situation I do recommend an AGM battery over Tubular for this very reason. The are the closest to Lithium in terms of charge / discharge rate and efficiency. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 3:30am On Apr 15, 2022 |
Namzy: True but gravity won't tell you the state of the lead and if they are being degraded. You will have high gravity from your hydrometer but that's just half the story. 1 Like |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 3:27am On Apr 15, 2022 |
Namzy: The high C rate charge won't kill the battery over night. Flooded batteries are quite resilient, however just know that most of the 100A you are pumping into the battery will be converted as heat. Lead Acid just can't process all of it as stored energy. Remember that batteries are essentially chemical energy. The composition of Lead Acid with electrolyte can only optimally process C20 anything about that is converted to heat and will gradually degrade the lead which will shorten the life of the battery. I had a system I use in managing my 4 x 200AH Index tubular. The goal is to make my consumption generally very efficient such that my over night use is about 45% DoD. I then have an over sized panel set at 3000w. This ensures that as day breaks and the panels start charging.. slowly ramping up .. the amount of energy pumped to the battery from 3000w panel leaves bulk by 11am (due to relatively low battery depth of discharge) and by the time solar panels are at peak generation, battery is on absorption and CC is cutting back on the amount of currents going to the battery. This ensures that I maintain a safe charge limit for the battery. This strategy however needs my night discharge to be low. It worked for me though for over 5 years. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 7:43am On Apr 14, 2022 |
I currently leave completely offgrid no NEPA connection at all. My solar capacity is 3kw, battery is 200AH 48v. Even though my panel can provide me 50A and can theoretically charge my bank in 4 hours (say 5 hours) The tubular chemistry means that it would take 2 to 3 days to fully charge that battery. Bulk charge at 40A would take close to 4 hours after which it would switch to absorption.. thus limiting the current going to the battery by as much as 10A. And it can do it his for 3 to 4 hours depending on discharge.. effective sunlight is done by 4PM.. remember this is an active system and I have loads connected to it. Over night I will draw down the battery again from the partial state I left the night before.. starting from a low position.. again battery slow charge would mean I may never finish charging it again in day two cause battery can't take all I have to give. I can not expand my panel to 5kw cause my battery would not be able to take most of it so it would be a waste. This slow charge for me is the biggest problem LA has. That and partial state of discharge problem. 5 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 7:34am On Apr 14, 2022 |
samnaija: Disuade Ke? Are we kids here or did I threaten anyone. I just stated my truth and what works for me. Everyone is free to make their decision. Just be comfortable with it First your statement above 800w solar system you want to push 50amps how ?.."When I started my solar journey" check my profile for my current panel capacity. And yes I fear of leaving my battery in partial state of discharge forces me (then) to have to prioritise a full charge causing me to turn off load if I don't have sufficient solar supply. Lithium doesn't have that problem I can leave it at 60% charge for the next 8 years and it would even be better for it. Now a days my problem is reversed. I have more solar potential than my battery can take causing me to waste lots of energy even as my battery struggle to fully charge. Lithium is great, but every one keeps saying the same thing. Pls be balanced. The only disadvantage of lithium which no one likes saying especially we wey dey naija na price.... Bros build according to your budget and what you can spare. I used lead acid till now and it served me well. My first 2 tubular batteries served me for 3 years under careful management. The current battery is now at 3 years and still has most of its capacity when I last did a capacity test. Lead Acid is good but it can nolonger meet my need. I find that lifePo4 is on per with *premium* lead acid (likes of fullriver DC, Trojan AGM, etc) especially if you go the DIY route. And it would serve better. But if your budget is tubular and it serves you well. Please continue using what works for you. It is comfort everyone dey find. Racking up lead acid would not solve the slow charge problem. Like I said when designing your system. Don't use your battery or solar panel capacity to determine your daily load. Rather use your battery C rating. Tubular has a recommended charge rate of C20 this means even if your panels is 2million watt if you have say a 400Ah tubular battery, you can only use 40A to charge it. Anything above 40 and it get wasted as heat (reducing its lifespan). That 40A is even best case scenario because once it gets to absorption, it would cut down on current by as much as 50 to 80% taking sometimes 8A from your panel to complete charge and it can be like that for 3 hours. We have just 6 usable sun hours (on a good day) in Nigeria so do the maths. If you have your battery constantly monitored you will struggle for a full charge. I am not discouraging LA. Just stating the fact to help people properly design their system so it can last. The more your battery last the more you have your ROI. 7 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 2:20am On Apr 14, 2022 |
isangjohnson: To can always get a server rack (ready made) lifePo4 battery which come ready to use. Top balancing can be quite delicate and requires some reading and configuration setup. Generally lifePo4 has a higher and steeper learning curve compared lead acid. But it is still worth it in the end. The DIY route is not for everyone very little room for error. The biggest advantage of lifePo4 over lead acid is not the cycle or discharge depth. lifePo4 recommended discharge is 80%. The best thing about lifePo4 is the ability to leave it for a long time in partial state of charge. This makes it perfect for solar application because unlike lead acid which needs to be 100 top charged almost all the time - when I was starting my solar journey with just 800w panels I would on a bad day turn off the load to prioritise battery getting fully charged. , lifePo4 actually prefers to be in partial state of charge. What this means on difficult solar months like July and August, you aren't under pressure to have your battery fully charged. It can be cycled to 70% or less without issues. This brings to the next issue with lead acid. The charge rate of most lead acid is very low. My 9kwh tubular battery as a recommended charge rate of c20 which for my 200ah bank is 20A. My solar panel can deliver over 50A but my battery can only take 20A. Hence if I deplate battery down to 80% dod, it would take 2 sometimes 3 days to fully charge not because I don't have solar capacity but because my battery is inefficient and can only take so much charge. Lead acid charge rate gets worse at absorption I have to suffer through 3 hours of absorption where current is tapered down to 10A sometimes 5A (even though my panels can push over 50A). What all this means is that with lead acid especially flooded, you are limited sometimes not by your solar potential but by your battery ability to take charge. Lithium can be charged at C1 which in my case means I can push all 50A to my lithium. So lithium ability to fast charge which again is perfect for solar application. Add the ability to use the battery for 10 years when cycled to 0% and you would not mind putting up with the initial learn curve for lithium. 9 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 1:57am On Apr 14, 2022 |
Penuelseun: Oh thanks. I was super careful. The too balancing is done. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 3:58am On Apr 13, 2022 |
abilityC:Got it from Amazon (us) but it is also available on AliExpress 1 Like |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 3:56am On Apr 13, 2022 |
Dam5reey: Thanks the way I install my panels reduces chances of short. Panels are actually paralleled at the combiner box (there is a positive combiner box and a negative combiner box) close to the charge controller. This way less amps are sent down the wire from PV. Downside is you get to use lots of wires. 1 Like 1 Share |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 1:09pm On Apr 12, 2022 |
Finally bit the bullet and jumped onto the Lithium train. Took delivery of brand new grade A Eve Lf280k last week and it has been an exciting journey making them into an SAY bank for a 48v setup. Before I got the batteries I got a bench power supply to help with top balancing, orings terminal plugs for terminating the BMS balance leads, JBD 7S-20S 200A BMS ILSCO de-ox (for preventing oxidation when two incompatible metals meet) I also used the opportunity to add to my panel capacity from 3kw to 5kw with the addition of 4x 540w JA panels (thanks to JustAskMannuel) Currently too balancing the batteries (they are almost balanced currently at 3.6v per cell. Would be providing updates once setup is complete. 10 Likes
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Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 5:06am On Mar 25, 2022 |
bodeface:One thing I have always told people here and everywhere is to rethink their relationship with electricity when they want to move to solar. This include focusing on the consumption side before the generation side. The ultimate goal of solar is to reduce and make efficient your energy consumption. Buying solar panels battery and inverter is the easy part. The hardest and most important part is to focus on making your load energy efficient. The load you listed are way too much to make using solar economical. A Good strategy might be to find efficient alternative of what you currently have or to isolate the small essential loads away from solar. We are all enthusiast here but even we would tell you that solar is not a silver bullet. It can be very costly if you want to deploy it for industrial use. The big boys who use solar for powering industry have deep pocket to invest now and rip over a very long period, you may not have such pocket. Reason why solar is ideal for homes is because home is relatively easy to power. Same can not be said for industrial application even on a small scale. 11 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 8:41am On Mar 21, 2022 |
Any solar panel seller in the house located in Abuja? I am looking to upgrade my systems and would prefer to procure my panels here in Abuja. Looking at between 2-3kw panel array. |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 6:17am On Mar 21, 2022 |
Chuk77: On Suoer, I haven't used them before and I can not attest to how good they are. Fangpusun controllers are essentially Victron clones. Epever has some very good rep too. You can reach out to Juo on this forums. He would supply you what you need and you can count on him for good support on setup. 3 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 5:15am On Mar 20, 2022 |
Chuk77: The only thing I would change from your setup is the Suor MPPT controller. I would change this for an epever or fangpusun mppt controller. They are much more reliable and have better charge algo compared to Suoer. I would advise you string your 300w panels in Series. This means that you would get about 70v-68v (VMP) depending on the panels. Doing it this way would ensure you. 1- Spend less on wiring, since you would be pushing move volts than amps from your panels to you CC. It would also means less voltage lost to resistance. 2 - Your battery would have more head room required to charge a tubular battery. Such batteries can require as high as 15.5v to be properly charged and you can set the absorption voltage to 14.8. Both the listed charge controllers should be able to do what you want with the battery especially carry out equalization charge which is required for a tubular battery. 4 Likes |
Satellite TV Technology / Re: Solar Energy, A Complement To FTA by bigrovar(m): 11:27am On Mar 18, 2022 |
ceaser: Years of paying cheap for energy in Nigeria finally coming home to roost. The country can no longer afford it. Those of us who made the tactical foresight of switching to solar and the accompanying life style change that warrants are very lucky. I see the nation gradually adapting to new realities. No more would we see houses with tiny weeny windows. Cross ventilation and natural lights would start being a thing. Hopefully we would see a more sustainable approach to how we use energy and that is always a good thing. 4 Likes |
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