Growatt 5000es Sharing what I learn from this forum

[Pendrak]

List of items i use for my instalation

-Inverter Growatt 5000es from Signature Solar
-Autotransformer Growatt (prepurchase 1 month ago from signature, still waiting for it).
-16 Cells LF280k from Doncan
-Riden RD6024w with 1000 watts psu (have a special port for charge lithium battery, it have a relay that cut the charge, you can config the cutoff -amp).
-Digital Torque Adapter 3/8" Drive | Audible Alert
-Scotch® Rubber Splicing Tape 23
-NTE Electronics 25W030 (resistor for charge caps of the inverter before connecting the battery)
-100Pcs 22-16 Gauge Insulated Ring Terminals Electrical Wire Crimp Connectors (M6, Red) (for the BMS)
-TEMCo Hammer Lug Crimper Tool V2 with holes for bench mounting (Crimps Battery and Welding cables 8 AWG TO 4/0 Wire Gauge) (LOVE IT)
-Jokari 10270 Secura Cable Stripping Knife for All Standard Round Cables, No. 27, 13.2cm L x 2.9cm W x 3.5cm H
-10PCS 1/0AWG -1/4''Stud Heavy Duty Copper Terminals Battery Cable Crimp Lugs M6 (Inverter ports are M6 and the cells are M6)
-10PCS 1/0AWG - 5/16''Stud Heavy Duty Copper Terminals Battery Cable Crimp Lugs M8
-Single Stud Battery Junction Posts, Heavy Duty Power and Ground Junction Block Power Distribution Studs Terminal Kit, Pack of 2 M8
-Klein Tools 3005CR Wire Crimper Tool, Ratcheting Insulated Terminal Crimper for 10 to 22 AWG Wire
-EWCS 1/0 Gauge Premium Extra Flexible Welding Cable 600 Volt - Combo Pack - Black+Red - 10 Feet of Each - Made in the USAç
-Klein Tools 11063W Wire Cutter / Wire Stripper, Heavy Duty Automatic Wire Stripper Tool for 8-20 AWG Solid and 10-22 AWG
-DC12V 24V 48V 250A Moulded Case Circuit Breaker Battery 250A MCCB Car Charging Pile Protector TAIXI (for the battery)
-180W Electronic Lithium Load 12V Vehicle Battery Test Capacity Monitor Discharge Power Supply Checker + Tester BOX (you can test battery and PSUs)
-BMS JK-B2A24S20P with LCD screen



Right now i am balancing 8 cells with the Riden Psu, what i want to know what the next thing to do, test each cell or just test some? i have this for make the test:

 

[Pendrak]

Result from the first cell.

CC (constant current): 20 amp
2.6v cutoff setting (some youtubers use 2.5, not sure why, i follow Will recommendation).
10 awg cable for charging and 14 awg for test leads connectors.

Cell 1 Result=281 Ah.
Cell 2 Result=284 Ah

Anyone know how many time i can let the cells in this state of charge? (2.681v)

 

[RandyP]

I'd test every cell for capacity. You do want to know if they are matched cells, right ?

 

[RandyP]

Result from the first cell
....................
Result=281 Ah.

Anyone know how many time i can let the cells in this state of charge? (2.681v)

Once per cycle, if you choose to cycle your battery that way. I choose to not discharge below 10v (10% SOC) for my 12v battery.

 

[Pendrak]

I'd test every cell for capacity. You do want to know if they are matched cells, right ?

Thanks for the advice, i will test then all.

The cells came slightly swollen but after discharge the swollen is almost gone, i am thinking on compress then now they are empty.

Anyone know how many time i can let the cells in this state of charge? (2.681v).

​

 

[RandyP]

Thanks for the advice, i will test then all.

The cells came slightly swollen but after discharge the swollen is almost gone, i am thinking on compress then now they are empty.

Anyone know how many time i can let the cells in this state of charge? (2.681v).

​

Grade B cells. Some of them swell a little.