New Samsung cell 33G

Batteries, Chargers, and Battery Management Systems.
Punx0r   100 GW

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Re: New Samsung cell 33G

Post by Punx0r » Jun 05 2017 5:10am

Ah, I've just had another look and seen 2C/3C buried in cell_man's post.

So there we go, just another 3C incremental improvement on what's already on the market. Perfectly believable.

It was the idea that this was a big leap to a high capacity 10C cell that was getting things riled up.

torker   1 MW

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Re: New Samsung cell 33G

Post by torker » Jun 05 2017 6:37am

I bought mine as a cheaper alternative to the high discharge cells. I use to run 50 amps on my play bike but now it should be back to 20-25 amps. EM3EV does good job/honest report of listing the different cells max amps for a guy like me.. Easy to figure out.. 8)
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Overclocker   10 kW

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Re: New Samsung cell 33G

Post by Overclocker » Jul 02 2017 11:20am

33g.png
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$2. pretty good price!

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parabellum   10 MW

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Re: New Samsung cell 33G

Post by parabellum » Jul 04 2017 4:50pm

Overclocker wrote:$2. pretty good price!
Is there any legit seller at this price?

Boobyjohn   1 mW

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Re: New Samsung cell 33G

Post by Boobyjohn » Jul 05 2017 12:59pm

I have the 14S9P triangle pack from EM3EV, with 33G cells inside. At least that is what I ordered; I haven't dared pull the pack apart to actually check. :)

My setup is a BBS02, derated to 18A, so not a high power setup by ES standards. My daily commute is 30 km each way, i.e., 60 km roundtrip, on paved roads. I don't charge at work. I have only used it on 8-10 workdays so far, so no long term experience.

The pack delivers solid performance when used at these moderate power levels. My previous dolphin-type pack with 30Q cells sagged like my wifes tits (used for 1 year, 400 cycles). The 30Q pack also sagged when new and had to be charged at work to provide enough power. In contrast, I don't notice any voltage sag from this pack. Charging to 90% SoC gives ample juice for the round trip commute, with somewhere between 25% and 40% capacity leftover (resting cell voltage is 50V after roundtrip). I have charged at most 1 kWh into the pack (when charged to 90% SoC) measured at the outlet using a power meter, i.e., the 1 kWh is including charger conversion losses. If I recall correctly, resting pack voltage was approx. 50V (35% SoC?) before I charged 1kWh. To summarize, this pack does exactly what I need, and quite likely a bit more. I do wonder what the performance will be at sub-zero temperatures, which is going to happen here in 5 months (I commute year-round)... I'll provide an update here when that happens.

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cycborg   1 kW

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Re: New Samsung cell 33G

Post by cycborg » Jul 05 2017 1:37pm

Boobyjohn wrote:The pack delivers solid performance when used at these moderate power levels. My previous dolphin-type pack with 30Q cells sagged like my wifes tits (used for 1 year, 400 cycles). The 30Q pack also sagged when new and had to be charged at work to provide enough power. In contrast, I don't notice any voltage sag from this pack.
I assume the 30Q pack was smaller than your current pack? If you're pulling a lot less current per cell now, it doesn't mean there was a problem with the 30Q cells, just that you were demanding more from them. 30Q should outperform 33G on a per-cell basis, except for 10% lower capacity.

Hillhater   100 GW

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Re: New Samsung cell 33G

Post by Hillhater » Jul 05 2017 6:17pm

Boobyjohn wrote:.... sagged like my wifes tits (used for 1 year, 400 cycles)........
:shock: ?? i dont want to know what you were using them for, but im sure its wife Abuse !.. :lol: :lol:
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12-C   100 W

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Re: New Samsung cell 33G

Post by 12-C » Jul 08 2017 9:51pm

Boobyjohn wrote:I have the 14S9P triangle pack from EM3EV, with 33G cells inside. At least that is what I ordered; I haven't dared pull the pack apart to actually check. :)

My setup is a BBS02, derated to 18A, so not a high power setup by ES standards. My daily commute is 30 km each way, i.e., 60 km roundtrip, on paved roads. I don't charge at work. I have only used it on 8-10 workdays so far, so no long term experience.

The pack delivers solid performance when used at these moderate power levels. My previous dolphin-type pack with 30Q cells sagged like my wifes tits (used for 1 year, 400 cycles). The 30Q pack also sagged when new and had to be charged at work to provide enough power. In contrast, I don't notice any voltage sag from this pack. Charging to 90% SoC gives ample juice for the .
Can you comment on the 30q pack of yours? How many cells S?P? Thanks.

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ABritInNY   100 W

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Re: New Samsung cell 33G

Post by ABritInNY » Oct 26 2018 12:12am

I'm guessing the power capabilities of my previous packs have ruined me, but tbh I'm very disappointed in the 33g cell. I have a Reention 13s5p tiger shark pack with these cells inside and it powers a 1000w rear hub with lil 6fet sinewave esc. It was listed as 16.5ah, I guess calculating them as 3300mAh, but Paul says 3150mAh so that's what it is and it's really just a 15.75Ah pack. Another poster mentioned low voltage sag under load, but I'm not finding that at all. With only a 22a esc anything over like 800w really dips my sw900 batt display from 5 bars to 3 or even 2, even when full. It's not really heating up, so that's a bonus and means the pack isn't being overly stressed, it just seems to be less capable a 10a EV cell, than say the cheap 2200mAh LG MF1 or Samsung 22P that are in the decent hoverboard packs. I'm gonna have to see about running a parallel pack, perhaps an 8ah Lipo pack in parallel to give it some pep ;)
EEB frame set, 1500w Leafmotor 4t winding, Powervelocity 18fet/Lyen 18 fet 4110 ESC, 24s 30ah prismatic cell Lifepo4 batt w/60a-120a BMS, CA V3, Dropper Seat post.
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thunderheart   100 W

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Re: New Samsung cell 33G

Post by thunderheart » Oct 26 2018 6:14am

ABritInNY wrote:
Oct 26 2018 12:12am
It was listed as 16.5ah, I guess calculating them as 3300mAh, but Paul says 3150mAh so that's what it is and it's really just a 15.75Ah pack.
It's a 3.15Ah/6.5A cell.
SPECIFICATION OF PRODUCT.png
SPECIFICATION OF PRODUCT.png (102.74 KiB) Viewed 474 times
Yinlong LTO Lithium Titanate safety tests: https://youtu.be/eAUYbSDEy6I
Toshiba SCiB LTO Lithium Titanate safety tests:https://youtu.be/XsrRDZxEFQE

LG M50 vs Samsung 48G:https://youtu.be/KGJDogOG4zw
LiFePO4: QB26650 2500mAh 50A vs A123 ANR26650M1B: https://youtu.be/GOSkte11lRc

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