₦airaland Forum

Trippledots:
Oh boy!.. So sorry!... I'll show dis to one of my friend that keeps arguing that li-ion is safe yen yen yen....as if there are no risks. But first I'll like to know what happened.

I use a li-ion pack dat was designed without a bms.. Nonsense builder, story for another day...but my only consolation is that it was designed for 16v or so, but i charge to max 14.5v.....or maybe i should just decommission the thing sef.

Thanks for your concern, i will personally still use lithium but with a lot of precaution.

ModelX:
Same PWM controller that is less than 5k on AliExpress with shipping.
Only thing I'd buy off him is batteries and solar panels.

Many Thanks sir, will be looking forward to doing business with you sir.

enet1:
Feflo, is this price still valid and should I still contact femi for this?

The prices are still valid sir.

Femi and Feflo is thesame. Femi is the personal name while Feflo is the business name.

Many Thanks

Penuelseun:
Sorry about that, didn't the battery have a bms, and how did you charge it before this happened?

temizeee:
agh eeeyaaa... How did it happen? Did u use any unspecified charger or what?.... Damn... A great loss niyen o.. God shall replenish with better package...

Many Thanks for concern, really appreciated.

I experienced the worst side of lithium ion batteries on the 5th of December 2019. It exploded and completely razed my store room.

My observations and lessons learnt will be posted on here later.

TommyAnthem:
Hello Femi, I have a 650 APC UPS (400w) which I converted by following your instructions, I intend using it with two 12v 200ah battery in parallel as the case may be, what is your advice, thanks.

N.B, I plan my load not to exceed 200w at every given time.

I think the major challenge will be the charger. It will be extremely difficult to get an effective charger for your 12v 400ah battery bank. It's professionally better to go for a 24vdc system as earlier advised.

Solar panels available. Call Femi on 08023662352 or 08165304602

obosirow:
Any bigger than 1.5kva that's APC?

2.2kva 48vdc @35k

3.0kva 48vdc @40k

Thanks

Ritar Slim batteries, fairly new available @45k

obosirow:
What's the ups capacity and how much is this without charger?

1.5kva 24vdc cost 25k without charger

Converted UPS still selling like hot cakes

turok:
How much is the 80ah battery?

Sorry for the late reply 25k

Solar panels installation

12vdc 80ah AGM batteries available

Call Femi on 08023662352 or 08165304602

48vdc system inverter

Converted UPS construction and installation

Inverter /Solar Installations : contact Femi on 08023662352 or 08165304602

Inverter / Solar Installations, batteries sale. Contact Femi on 08023662352 or 08165304602

Inverter / Solar Installations. Contact Femi on 08023662352 or 08165304602

Inverter / Solar Installations. Contact Femi on 08023662352 or 08165304602

12vdc 150ah Ritar Slim batteries available @ 45k

generationz:
Hello, feflo . how many hours can this last with a mini lenovo laptop and one phone?

The package is without battery. It's battery that determines duration. If used with 2pcs 100ah batteries, it should last for about 10hrs with your stated load.

Thanks

lateefykn84:
please guys I need any marketer contact, that sells fairly used deep cycle battery in Lagos

Contact Femi on 08023662352 or 08165304602

Drgreatone:
I can finally comment after taking it through its paces, thank you @feflo for your honesty and patience with my plenty questions and clarification even at odd hours. Only use it wit my LED tv and dstv decoder and even after abt 5hrs of use, battery is still at 55%. Keep up the good work Chief

Many thanks for your kind words, like I always say, I'll be with you all the way.

tetralogyfallot:
lithium ion cell are very good. Just like I discovered common 48ah lithium ion battery performs better than 100ah lead acid battery. Lithium ion technology is dope.

It's a pleasant surprise to me too. Many thanks

mctfopt:
Interesting, the low resistance trait of lithium makes charging it faster than our conventional lead acid batteries. I think bottom balancing the two lithium pack may help with the voltage difference

Many thanks sir, will work to balance them and then continue with the test. I so much appreciate your input. Thanks

Day 1 TEST CONCLUSION

My 48vdc 60amps lithium pack performed far better than my 48vdc 185ah lead acid pack.
This test is ongoing and will update as soon as time permits.

Observation

I noticed that one pack performed better than the other pack. There was a voltage difference of about 2v between the packs. At a point one was reading 27v while the other 25v. I'll work on correcting this.

I also noticed that the lithium charges faster when compared to Gel or Lead acid batteries.

I immediately put on my 750watt pumping machine and it worked for an hour, used an electric Iron(1kw) for about 30mins. Used it overnight on three fans and other light load. I woke up around after 5am and the battery was 52.4volts. Pumped water again for about 15mins and the voltage was about 50.9v before leaving home this morning.

UPDATE ON LITHIUM TEST

I was able to finally put my lithium to test
It was hooked to my 2.8kw solar array, I adjusted the bulk charge voltage to 60v and the float voltage to 58.8v (each cell has voltage of 4.2v and one battery pack has 7 cells making about 29.4v per pack).
I connected the two packs in series to get 48vdc. I got back home at around after 4pm and it was already on float.

mctfopt:
Just like you suspected, the BMS may probably be incorporated into the control board. This is awesome, I'm on the lookout for a not-so-expensive lithium setup these days. So update the house on how it goes. Thank you.

I definitely will. Many thanks