Tabless design cylindrical cells tests

[h1tec]

View attachment 370931

What about this other new cell? Anybody hear of this one? I just order 5 samples to test.

The numbers looks impressive, charging capabilities and cycle life. We need to see if is true.

Reliance INR21700-RS50 Specifications

Summary
Cell Type: INR21700-RS50
Nominal Voltage: 3.6V
Nominal Capacity: 4950mAh (minimum)
Max Continuous Discharge: 70A (with 80°C temperature cutoff)
Max Continuous Charge: 15A
Standard Charge: 2.5A (0.5C) CCCV to 4.2V, 100mA cutoff
Fast Charge: 15A (3C) CCCV to 4.2V
Impedance (ACIR @1kHz): ≤4.0 mΩ
Discharge Cutoff Voltage: 2.5V
Charge Temperature Range: 0°C to 60°C
Discharge Temperature Range: -40°C to 80°C
Weight: ≤67g
Dimensions (Max): Ø 21.35mm x 70.30mm

Storage Temperature:
1 year: -20°C to 25°C
3 months: -20°C to 45°C
1 month: -20°C to 60°C

Cycle Life
Test Condition: 25°C, 8A charge / 40A discharge
Result: 400 cycles with ≥60% capacity retention

Test Condition: 25°C, 15A charge / 30A discharge
Result: 400 cycles with ≥60% capacity retention

Test Condition: 0°C, 8A charge / 10A discharge
Result: 200 cycles with ≥80% capacity retention

Test Condition: -10°C, 3A charge / 10A discharge
Result: 50 cycles with ≥80% capacity retention (Note: manufacturer does not guarantee performance/safety for charging below 0°C)

RS50 vs 50PL @ 40A. I honestly doubt it'll be able to beat the 50PL in terms of maximum CDR before heating up past 80C, or cycle life, but it might yield a little bit higher runtime at some current levels in the 15 - 35A range... I doubt it'll be able to compete with the P60B when it comes out though, not to mention the JP50 and the 50D. Very competitive market here!

 

[ZEUS-FL]

RS50 vs 50PL @ 40A. I honestly doubt it'll be able to beat the 50PL in terms of maximum CDR before heating up past 80C, or cycle life, but it might yield a little bit higher runtime at some current levels in the 15 - 35A range... I doubt it'll be able to compete with the P60B when it comes out though, not to mention the JP50 and the 50D. Very competitive market here!

At this point, we never know. When I first saw the EVE 50PL and noticed an IR higher than 3 mOhms, the first thing that came to my mind was, "this cell is not going to be better than the JP40," because the JP40 has an IR of around 2.4 to 2.6 mOhms. But surprise IR is not everything.

We also noticed in the performance of the 50PL that the higher the current goes over 30A, the more Ah it can discharge, which is something normally very contradicting. Talking about this with John, I believe it is just the right temperature at the right moment the sweet spot—where temperature helps lower the IR and allows the electrolytes to flow better without negatively affecting performance. We are talking about just 20 to 30 mAh more, but we see this happening between 30A and 45A.

At the end of the day, anything is possible.

 

[OrKaN]

View attachment 370931

What about this other new cell? Anybody hear of this one? I just order 5 samples to test.

The numbers looks impressive, charging capabilities and cycle life. We need to see if is true.

Reliance INR21700-RS50 Specifications

Summary
Cell Type: INR21700-RS50
Nominal Voltage: 3.6V
Nominal Capacity: 4950mAh (minimum)
Max Continuous Discharge: 70A (with 80°C temperature cutoff)
Max Continuous Charge: 15A
Standard Charge: 2.5A (0.5C) CCCV to 4.2V, 100mA cutoff
Fast Charge: 15A (3C) CCCV to 4.2V
Impedance (ACIR @1kHz): ≤4.0 mΩ
Discharge Cutoff Voltage: 2.5V
Charge Temperature Range: 0°C to 60°C
Discharge Temperature Range: -40°C to 80°C
Weight: ≤67g
Dimensions (Max): Ø 21.35mm x 70.30mm

Storage Temperature:
1 year: -20°C to 25°C
3 months: -20°C to 45°C
1 month: -20°C to 60°C

Cycle Life
Test Condition: 25°C, 8A charge / 40A discharge
Result: 400 cycles with ≥60% capacity retention

Test Condition: 25°C, 15A charge / 30A discharge
Result: 400 cycles with ≥60% capacity retention

Test Condition: 0°C, 8A charge / 10A discharge
Result: 200 cycles with ≥80% capacity retention

Test Condition: -10°C, 3A charge / 10A discharge
Result: 50 cycles with ≥80% capacity retention (Note: manufacturer does not guarantee performance/safety for charging below 0°C)

Do you know when the cells will arrive? I wanted to buy 50PL cells for my 32S battery, but unfortunately, the cells aren't mature enough for a 32S 134.4V battery. I recently received an offer for 50RS cells, which are supposedly better than 50PL cells and perfect for a 32S 134.4V battery. I don't want to invest so much money in a battery that I don't even know if it will work. Like with the last 50PL test video, I hope to see the 50RS cells in person to see if they match the datasheet. Thank you for your great videos.

Best regards

from Germany

Orkan

 

[Demyan_FAI]

View attachment 370931

What about this other new cell? Anybody hear of this one? I just order 5 samples to test.

The numbers looks impressive, charging capabilities and cycle life. We need to see if is true.

Reliance INR21700-RS50 Specifications

Summary
Cell Type: INR21700-RS50
Nominal Voltage: 3.6V
Nominal Capacity: 4950mAh (minimum)
Max Continuous Discharge: 70A (with 80°C temperature cutoff)
Max Continuous Charge: 15A
Standard Charge: 2.5A (0.5C) CCCV to 4.2V, 100mA cutoff
Fast Charge: 15A (3C) CCCV to 4.2V
Impedance (ACIR @1kHz): ≤4.0 mΩ
Discharge Cutoff Voltage: 2.5V
Charge Temperature Range: 0°C to 60°C
Discharge Temperature Range: -40°C to 80°C
Weight: ≤67g
Dimensions (Max): Ø 21.35mm x 70.30mm

Storage Temperature:
1 year: -20°C to 25°C
3 months: -20°C to 45°C
1 month: -20°C to 60°C

Cycle Life
Test Condition: 25°C, 8A charge / 40A discharge
Result: 400 cycles with ≥60% capacity retention

Test Condition: 25°C, 15A charge / 30A discharge
Result: 400 cycles with ≥60% capacity retention

Test Condition: 0°C, 8A charge / 10A discharge
Result: 200 cycles with ≥80% capacity retention

Test Condition: -10°C, 3A charge / 10A discharge
Result: 50 cycles with ≥80% capacity retention (Note: manufacturer does not guarantee performance/safety for charging below 0°C)

So sorry to bother you, but could you please share where are you buying cells, maybe the is reliable dealer?