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Samsung 29E version 6 (29E6) 2900mAh cell's capacity test
#1
Video 
Samsung INR18650-29E is available in 2 versions - version 6 (29E6) which is the hero of this test, and version 7 (29E7). Visually they differ by heat shrink tube color and the version is printed under "SAMSUNG" in marking. Samsung 29E is a 2900mAh 18650-size cell which supports discharge at up to 5.5A.
[Image: 257837_original.jpg]

The battery was bought from my reliable supplier (Queen Battery) and tested with ZKETECH EBC-A20 and a self-made battery holder. It's a PC-connected battery tester supporting 4-wire measuring and discharging at up to 20A.
[Image: 87638_original.jpg]

I've used version 3.0 of my battery holder based on 0.5mm thick pure copper terminals
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[Image: 209931_original.jpg]

I've followed all the prescriptions of the IEC61960-2003 standard concerning battery's capacity measurement. Before each discharging cycle each battery was charged at standard charge current mentioned in its datasheet to charge end voltage. Before each discharging or charging i've held a 1-1.5hrs pause. The environment temperature was 23.0-24.5°C. To be sure in results i've done each test minimum twice (usually 3-5 times).


Samsung INR18650-29E v.6

The cell is marked as INR18650-29E SAMSUNG SDI 6 HM5T - number 6 stands for the version.
[Image: 257639_original.jpg]

The main specs from Samsung 29E datasheet:
Typical capacity: 2850mAh
Minimum capacity: 2750mAh
Nominal voltage: 3.65V
Standard charge current: 1.375A (0.5C)
Maximum charge current: 2.75A (1C)
Charge cut-off current: 55mA (0.02C)
Charge end voltage: 4.20V
Max. continuous discharge current: 5.5A (2C)
Discharge cut-off voltage: 2.5V
AC impedance at 1KHz: ≤35 (45) mΩ
Max weight: 48g

Cycle life:
Using 1.375A (0.5C) charge with 137.5mA (0.05C) cut-off and 2.75A (1C) discharge with 2.5V cut-off after 500 cycles the capacity should be ≥1868mAh (70% of rated capacity).

DC IR at 2.75A in fully charged condition was 26±1.6mΩ (measured using EB Tester Software's Resistance test feature).

Measured dimensions: 18.2mm (diameter) × 65.0mm (length).

Measured weight: 45.36g.
[Image: 258288_original.jpg]

Capacity test results:
[Image: 258530_original.png]
At 0.2C/0.55A Samsung 29E6's capacity is a bit higher than the typical 2850mAh capacity declared in datasheet and only 2mAh lower than 2900mAh. At 5A it showed almost 2700mAh and without any significant voltage drop in the beginning. All 3 curves look excellent and 2.5V discharge cut-off maximizes this cell's compatibility with BMS boards.

Samsung 29E6 didn't surprise me and make me cry wooow! It showed good results and besides the price there are also a couple of important moments like 500 cycles down to 70% at 0.5C charge/1C discharge and 2.5V discharge cut-off which make this cell even more attractive.

Here is the video version of this review:
[Image: 257528_original.jpg]


Check out my YouTube channel for batteries, chargers and other stuff reviews.
I've launched my blog where you can find all my reviews in one place. Every new test/review will be first published on YouTube and in the blog. I'll be happy to see new subscribers, comments, suggestions and just your thoughts.
Korishan likes this post
LiFePO4: QB26650 2500mAh 50A vs A123 ANR26650M1B: https://youtu.be/GOSkte11lRc

Yinlong LTO Lithium Titanate safety tests: https://youtu.be/eAUYbSDEy6I
Toshiba SCiB LTO Lithium Titanate safety tests: https://youtu.be/XsrRDZxEFQE

XTAR DRAGON 4-slot battery tester review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart battery tester review: https://youtu.be/jrbJceNXv1g

Samsung 33J for TESLA: https://youtu.be/7FMxgMmPeh4
Samsung 40T - a high drain 35A 21700 cellhttps://youtu.be/lxgKWiQ9580
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#2
Very strange to see a 2900mAh cell, specially since 2800 and 3000s already were on the market since quite a while back.

Maybe (and this is only an assumption on this) they just re-branded and re-released the 3000mAh ones (like B series) and did this to be more fair to everyone. More fair would of been to brand them as 2800s.

Thank you for the review.
thunderheart likes this post
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#3
(07-01-2019, 07:23 AM)Overmind Wrote: More fair would of been to brand them as 2800s.

Completely agree with you
LiFePO4: QB26650 2500mAh 50A vs A123 ANR26650M1B: https://youtu.be/GOSkte11lRc

Yinlong LTO Lithium Titanate safety tests: https://youtu.be/eAUYbSDEy6I
Toshiba SCiB LTO Lithium Titanate safety tests: https://youtu.be/XsrRDZxEFQE

XTAR DRAGON 4-slot battery tester review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart battery tester review: https://youtu.be/jrbJceNXv1g

Samsung 33J for TESLA: https://youtu.be/7FMxgMmPeh4
Samsung 40T - a high drain 35A 21700 cellhttps://youtu.be/lxgKWiQ9580
Reply


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