₦airaland Forum

I need 4S active balancer. Anyone here selling within lagos?

Queed:
Hope you included a small heat sink for the diode?
Because 10A at 1V drop out is 10W and it's a lot of heat power for a free running diode. The voltage drop is topical for diode (0.3v to over 1v depending on lot of factors). The diode should fix the reverse current issue, perhaps it's faulty or not properly connected. Finally, the 13.7v would not be a problem for the BMS.

I was hoping the fan inside the charger would expel the heat from the diode.

I did say it stopped the reverse current, but I think the charging might be slower now because of the voltage drop.

ewizard1:
A >10A Schottky diode like the MBRF20100CT. You need to mount it on a heatsink as it gets warm/hot when delivering current through it.

Yes you're right, I noticed this.
I'm planing to extend the wiring to place the diode close to the fan of the charger since the fan on the charger is always on while charging

officialfestus:
No

Thank you sir

dollarnaira:
Buck converter controls the output desired voltage.

So the converter should be set to 1amp?

officialfestus:
get a 10A rectifier diode.

I got the 10a rectifier diode, open up the charger and solder it to the positive wire. It did stop the reverse current flow but when I take the voltage reading from the charger mouth, the voltage dropped from 14.6v to 13.7v. I understand it's due to the internal resistance of the diode but I want to know if that will be a problem for the BMS on the long run

dollarnaira:
Yes

I don't understand the "charger via converter" part. I'm still a newbie

dollarnaira:
Get a charger via converter at 1amp.

Sorry I don't understand this.

And can I still use an active balancer together with the passive balancer on the bms?

officialfestus:
get a 10A rectifier diode.

Okay noss, I've asked 2 shops that sells solar equipments they don't have it. I'll keep searching.

dollarnaira:
Amp of each cell...

6ah

officialfestus:
get a diode to stop the reverse current, the diode is to be connected on the charger's output.

The charger is 14.6v 10amp, What kind of diode can i use and where can I get it from please?

dollarnaira:
Cell configuration?

4S4P

I need Help!
How do I stop reverse current flow into charging brick in a common port BMS like this please? 🙏 🙏

dollarnaira:
They are good

Ok, thank you boss

Greetings to the OGs in the house.

I'm in the process of cell testing, 32700 3.2V LiFePO4 cells to be precise.

There are two cells in need of expert opinion:

**Cell 1**: Self-discharge from 3.23V to 3.19V within 24 hours but performs well under load test using a 12V DC cooling fan.

**Cell 2**: No self-discharge over the past 24 hours but does not perform well under load test; it reads 3.23V with no load but when the 12V DC cooling fan is connected, it jumps to 3.16V (a 0.07V drop) and bounces back to 3.23V once the load is disconnected. Other cells have a voltage drop of 0.01V or 0.02V when the same load is connected.

I want to know if either of these cells are worth considering.

fuckboys:
Chief it's time I clear this up cos I've had enough of you misleading people, what you're selling is just a step down transformer. Yours is a 5000w step down transformer.

You're literally just stepping down 220v to 110v.

That cooker is going to take forever to cook a meal on your so called energy saver, even that pressing iron is going to take hours to heat up.
You're literally just stepping their voltages down to 110v.

It's just simple maths. When you lower their voltages × their amps hour = lower watts.


Picture below is a 1000w step down transformer.

I'm looking for something like this. Where do I get this from please

dollarnaira:
What do you have first?

Do you mean my budget? Under 300k

Good evening gurus, I need help building a backup to keep my laptop and monitor on for about 12hrs. I'll appreciate your recommendations 🙏

Samsung S20+ back camera set needed!

Igemburg:
Location? Drop digits

Fagba
Whatsapp number on my profile

Redmi 9t for parts
*motherboard is dead, screen is cracked, other parts working

Make your offer

LucidJane:
I have one with 2 lines on the display. Snapdragon variant. How much would you pay for it?

Are you selling the phone or just the screen?