Dongguan Lighting New Technology- Order options, feedback requested

DLTooley

Solar Enthusiast
Joined
Jan 12, 2020
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143
I received my cells, from another company, on a second tracking number from that originally provided. I had no advance notice of delivery.
 

mcj7247

New Member
Joined
Aug 26, 2021
Messages
23
I received my cells from Dongguan yesterday via Fedex. (8) 230aH cells plus (2) 120A JBD BMS' were packaged well and had no damage. All cells look new with intact bar codes. I could use some help determining if I have 2 separate mfg. lots. I've attached a few screen shots. It looks like 2 different sets of numbers on the barcodes, 04QCB72714000J and 04QCB72713900J. Can anyone let me know if these might be 2 separate mfg. batches?
 

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BateryS

New Member
Joined
Jan 31, 2022
Messages
2
Hi mcj7247! Today I received a cells (230ah) with the same batch number (04QCB72713900J) Seller - Tewaycell Battery Store, on AliExpress. To learn more about the party, you need to write to the seller.
 

mcj7247

New Member
Joined
Aug 26, 2021
Messages
23
Hi mcj7247! Today I received a cells (230ah) with the same batch number (04QCB72713900J) Seller - Tewaycell Battery Store, on AliExpress. To learn more about the party, you need to write to the seller.
Even with 2 different batch numbers, my 8 cells seem to cycle extremely well and stay within 15mV cell to cell during charge/discharge.
DISCHARGE RATE (18.3A)
Cell NoSerial No.Mass(kg)StartVEndVTime (h.m)Capacity (Ah)
604QCB72714000J4.1563.56192.78413h4m236.88
104QCB72713900J4.1603.55592.76212h58m236.76
404QCB72713900J4.1583.54972.79713h0m236.61
204QCB72714000J4.1583.543013h2m236.25
504QCB72714000J4.1613.54362.80513h0m236.37
704QCB72714000J4.1573.52602.77613h3m235.56
804QCB72713900J4.1593.523912h49m236.22
304QCB72714000J4.1613.53632.82912h58m234.94
 

BateryS

New Member
Joined
Jan 31, 2022
Messages
2
Oh yes, it's good cells. I haven't tested cells, my battery tester hasn't arrived yet.
If you test at maximum parameters (max. charge voltage = 3.65 V, min. discharge voltage = 2.5 V), then the capacity will be greater.
 

mcart117

New Member
Joined
Mar 28, 2022
Messages
31
Posted in error: I wrote a post complaining that the story didn't continue, and then realised that it went over the page o_O
 
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