ceaser:


Indeed, what's your array like, like what's the total installed capacity?

PMPSolutions:
An indoor generator assembled by PMPSolutions which can power fans, LCD/LED televisions, decoders, laptops,led bulbs etc.

No noise, no fumes, no petrol!

ceaser:


https://m.aliexpress.com/item/32947315326.html?spm=a2g0n.orderlist-amp.item.32947315326&aff_trace_key=&aff_platform=msite&m_page_id=928amp-338oMGQYmp6PKNWmCtqiIA1585777034532&browser_id=dece6daf65cc4b3c8ef4e96344080490&is_c=Y

The one I ordered for. Awaiting the delivery.

ojeysky:


Me I don't send request(make seller no think say I dey beg ham), I just wait till the countdown elapse and then I push the dispute in, but 90% of the instances seller extend before the countdown elapse. That said, I have later received refunded item in the past and had to return the funds back to the seller.

adrusa:


How did you refund the sellers? I was in similar situation and I was wondering how to reimburse the sellers?

adrusa:


How did you refund the sellers? I was in similar situation and I was wondering how to reimburse the sellers?

Christgalaxy:

what kind of batteries are you using for the generator

Deluxe8000:
Pls house, what is your take on this charger as regards it's effectiveness and durability? Thanks.

essegis:
Good morning all, while I'm not new to inverters and solar this will be my first time venturing into Lithium batteries and its affiliates. I will be discussing my proposed new set up in a future post, presently all batteries are on transit into the country.
For now I will really like to pick your knowledge on 2 pertinent issues I still don't have resolved. Even YouTube is really not answering them for me.

1) What's the type of electrical charger I need to invest on for a 24v and 48v system. Most YouTube guys use MPPT to charge their set ups and the ones that manage to venture into electrical charging only mention DC to DC chargers or little amps chargers to build up their batteries.

2) I don't really understand much about the BMS or its need but what I want to ask is its disconnect function during charging. If it disconnects my MPPT from charging the batteries won't that spoil the CC? As those guys don't tolerate solar connection with nothing to discharge into. Also, can ePever (my present CC) be programmed to give same absorption and float charge? I learnt that technique on this forum.

Thanks as you help a brother out.

earthrealm:


a veli veli good kwesion , something wey you tell me say na 65k some time ago.......i pick race
i need 2 units now now, sharperly

This is the unit am talking about

mctfopt:



1) Any charger that you can adjust the voltage to the specific voltage of the battery you use. Or the charger's output is ok with the specified charging voltage of the battery. PS the charging amperage of lithium battery is specific to the make and capacity of battery in use. Some 100AH 3.2V battery can be charged up to 100A while some specified 50A or 20A. So you will need to see the spec sheet of the battery you want to buy.

2) The BMS is the Battery Management System, each BMS can do the following, dependent on the specifications, manage charging, manage discharging and balance functions. The BMS only disconnects battery at extreme situations. I'll give you an instance. A BMS rated 50A for charging and 60A for discharging can only disconnect battery when you exceed 50A during charging (usually around 60A) and exceed 60A during discharging (usually around 70A). Also the BMS manage discharging by cutting off at preset voltage (some BMS has the capability of varying this cut off), say a BMS has a low voltage cut off of 2.5v , (assuming a LiFePO4 of 3.2v), if you discharge a 12v system to 10v it will cut off the battery. Also if the high voltage cut off is 3.60v (assuming it's a 3.2v lifepo4 cell) for a 12v system it will cut off at 14.4v for a 12v battery system.

Ways to manage the BMS from disconnecting during use. First, plan your system and buy appropriate BMS. Eg if you have a 24v system and you plan to run a load of 1000w. It won't be wise to buy a 20A 24V BMS as you can easily exceed this amperage. In this case a 24v 60A or 24v 80A will be more appropriate.

Secondly, buy an appropriate SCC that can match the cut off voltage of the BMS. Eg a 24v lifepo4 (3.2v cell) BMS will cut off at voltage exceeding 28.8v, so set your SCC maximum battery charging voltage to like 28.4v or something below that 28.8v.

I think your Epever has the capability to charge lithium, you just need to know how to use it. PS my friend is currently using one to charge his lithium batteries, just that the friend is not currently in the country.

Finally, not ALL MPPT solar charge controller fries when the battery is disconnected during PV charging.

essegis:


Thanks for taking the time out to attend to me. All the batteries I bought for my new Lithium set up are used so to get hold of their spec sheet go hard oo. I have modules from Nissan Leaf, BYD & 38120 coming in. I know the operational voltages I want to set these at but presently don't know the charger amperage to be used. If you can advice on a charger to add to my cart I'll be grateful.

Surprised to hear there are CC that don't fry up when they have input but no output. This is my first time of hearing it as I've always tried to prevent such situations. Can you advise respected CC for Lithium too? Thanks once again.

mctfopt:


These are popular batteries, I don't think it'll be hard to see the spec sheet online. Why not buy inverters that can handle both the charging and PV functions? Growatt Ce Approval Pure Sine Wave Inverter 5000 Watt Solar Offgrid Inverter, or this other inverter MPPSolar 5000w Solar inverter 230vac 48vdc + 80A MPPT are all good buy. You can also buy the Victron, Schneider, SMAs etc on the side of the premium range.

But you can also check this charger (actually a rectifier that is modified). It's pricey but I've seen it in action.

I think your CC is ok, dunno the amperage though, EPEVER do produce great CCs, there are many CC out there. My neighbour's MakeskyBlue SCC does not burn when the battery is discounted. Though I still won't advise anyone to disconnect their batteries

essegis:


Thanks bro, when I actually set out to planning the new system I wanted to use an hybrid (I've never used it before) but was quick to realise it does not have the grid supply cut off functionality to the house. What I mean is my plan is to use grid and solar to charge my batteries while the batteries feed the house 24-7. With hybrid (same with inverters with charging function) when NEPA comes they cut off and supply NEPA to the house, I don't want that.

So I will be buying my equipment individually viz inverter, charger, MPPT. Also, my latest inverter that has served me 5yrs with no issue came without charger. So I feel they last longer if separated. But I will be ordering this charger you highlighted here. Hope I can use for both 24v and 48v systems.

mctfopt:



I read what you wrote about your preference for non hybrid inverter but I still could not grasp what you meant. But if you prefer the standalone system, I guess you'll have to go for it. The charger has a range of 0-60v, that means it can serve for 12v/24v/36v/48v battery system. You can adjust whatever voltage you like within that 0-60v or 0-120v range. There are two types there, I'll recommend you order for the 0-60v if you plan to either use it on a 24v/48v system due to the higher current output (50A) compared to the 0-120v (25A).

mctfopt:



All the good chargers I know are costly, anyways I think this charger will work. But I can't really say how durable it is, because I've seen similar chargers for after a short period. But your experience may differ and you get to enjoy it. The thing I think should be important is if the specs meets your need and it is within your budget and available locally, lockdown has made us now buy local.

OtunbaLeXuS:
Good evening,

Please how many 200AH (12V) batteries are in 15.4KWH-48V lifpo4 battery.?


Thanks.

OtunbaLeXuS:
Good evening,

Please how many 200AH (12V) batteries are in 15.4KWH-48V lifpo4 battery.?


Thanks.

BetaTechnicians:
The question is a bit tricky, if we have to factor in useable capacity of lifepo4 vs 12V-200AH(Lead-Acid).

generalstingz:


You just have the mathematics to do. 15.4KWH ÷ 48V = 320.8AH ~321AH

---

Going by your question. 200AH × 12V = 2400WHR
15.4KWH ÷ 2.4KWR = 6.42 ~ 6
Theoretically, you have six times the capacity of a 200AH battery.

---

Guess your question has been answered.
You cant get a 48V configuration with 6 batteries. You count / arrange in 4s.
Cheers

mank1234:


Approx 6 (6 * 200AH * 12V = 14.4kWh)
But you can't arrange 6 of such to get 48V

Edit: answered already above.

adrusa:


If we are to do that, we will be talking of 9 to 12 x12v/200AH batteries depending on intended DOD on both sides.

ojeysky:


It's in my signature.... It's 2.25kw total

Trippledots:


That user rating review will be worth taking into consideration,...did you go through the comments?

ceaser:


Thumbs up.

Your PIP-GK, repair is still pending àbí? Covik 1-9 things.

How were you able to get those graphic outputs charted? I though is was an exclusive preserve of your GK, but now that you've changed the inverter you still get graphic interphase.