but so far as i can see (in the "manual") it is missing a diode/zenerdiode test function?
.. and it looks like that it is only available from Ebay China /Ali ?
I ordered a 4wire DL24 on Ali's 11.11 SALE and it arrived last year and is still lying in the edge due to custums stress with batteries.
I bought it for capacity test with selfwelded battery packs, 10s and 13s.
The manual tells:
Test voltage 150V, working current 20A.
On russian forum I learned:
Never ever more than 150V! (no prob for me)
10A max, absolutely!
Looking at the traces I guess its right, 20A seem to be utopic.
yEAH,
I have one. Works flawless.
Running a test right now on some 35ah SLA's
No problems up to 10Amp tests so far. No magic smoke.
I replace Mosfet with FDL100N50F (genuine from mouser with 2500W for 25°C, 1200W for 90°C, 500V, 100A, TO264 case), diode with STPS60SM200CW 60A/200V, use water cooler with Arctic Silver 5 and cooled shunt with an aluminum sheet and slight thermal pad. I have 60°C on Mosfet for 600W continuous load. Now the problem is thin of PCB track, which heat up when the current exceeds 18A.
I replace Mosfet with FDL100N50F (genuine from mouser with 2500W for 25°C, 1200W for 90°C, 500V, 100A, TO264 case), diode with STPS60SM200CW 60A/200V, use water cooler with Arctic Silver 5 and cooled shunt with an aluminum sheet and slight thermal pad. I have 60°C on Mosfet for 600W continuous load. Now the problem is thin of PCB track, which heat up when the current exceeds 18A.
How does as far as the voltage sense accuracy is concerned the 4 wire version compares with the 2 wire modded solution (on first page of this thread) when using less than 8A discharge current?
They probably take the "+ sense" terminal to the 150K resistor but I wonder if they also take the "- sense" terminal to the measuring 16 pin IC traces.
No need for that. How far off is the voltage sense in a DL24P during discharge (more than 6A) when compared with a multimeter in the battery terminals?
No need for that. How far off is the voltage sense in a DL24P during discharge (more than 6A) when compared with a multimeter in the battery terminals?
No need for that. How far off is the voltage sense in a DL24P during discharge (more than 6A) when compared with a multimeter in the battery terminals?
that is not the problem, you need the 4 wire version to compensate the resistance of your WIRES to the power source.
e.g if you have 0.1 ohm wire resistance (and twice) and 6 A then the voltage measurement is 1.2V off.... and so also the cutoff voltage....
Has a remote display...
Has a remote display...
Not only...
- 4th mode Constant Resistance was added
- new analyzing function automatic internal resistance
- current resolution in mA choosable
I also ordered some DL24M. I will post here the tests feedback. I hope they are full backward software compatible.
Sometimes the seller needs some days to source the goods. They don't stock it "in house".
It's a nationwide contest to see how many pissed-off Americans they can get shitposting them on AliEx every day.
The 5 day wait is just tenderizer before the main course...
mnem
Doesn't everybody know this...?