Test/review of LG 21700 M50T 5000mAh (Gray)

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HKJ
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Test/review of LG 21700 M50T 5000mAh (Gray)

LG 21700 M50T 5000mAh (Gray)
DSC_0285
Official specifications:


  • Nominal energy: 18.20 Wh
  • Minimum energy: 17.60 Wh
  • Minimum capacity: 4850mAh
  • Nominal voltage: 3.63V
  • Standard charging current: 1,455A
  • Max charging current: 3.395A
  • Charging voltage: 4.2V
  • Charge interrupt current: 50 mA
  • Max discharge current: 7.275A
  • Switch-off voltage: 2.5V
  • Weight: 68 ± 1 g
  • Protected: No.
  • Rechargeable: Yes
  • Dimensions: 21.1mm x 70.2mm

LG%2021700%20M50T%205000mAh%20(Gray)-info
This is a high capacity 21700 cell with about 5000mAh, the cell is not for high current.
DSC_0286 DSC_0287
DSC_0288
DSC_0289
LG%2021700%20M50T%205000mAh%20(Gray)-Capacity
The two cells are well matched.
LG%2021700%20M50T%205000mAh%20(Gray)-Temp-7.0
LG%2021700%20M50T%205000mAh%20(Gray)-Temp-10.0
LG%2021700%20M50T%205000mAh%20(Gray)-Temp-15.0
LG%2021700%20M50T%205000mAh%20(Gray)-CapacityTimeHours
LG%2021700%20M50T%205000mAh%20(Gray)-CapacityTime
LG%2021700%20M50T%205000mAh%20(Gray)-Energy
LG%2021700%20M50T%205000mAh%20(Gray)-PowerLoadTime
LG%2021700%20M50T%205000mAh%20(Gray)-TripCurrent
LG%2021700%20M50T%205000mAh%20(Gray)-Charge
Discharge-LG%2021700%20M50T%205000mAh%20%28Gray%29-pulse-1.0%2010%2010-IR
Conclusion
This is a very good high capacity cell, but I got slightly less capacity compare the M50.
Notes and links
How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries
Graphical comparison to 18650 and other batteries
Table with all tested LiIon batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Superstocker
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Thanks HKJ! Do you happen to know what the ‘T’ or lack thereof denotes?

HKJ
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Superstocker wrote:
Thanks HKJ! Do you happen to know what the ‘T’ or lack thereof denotes?

No

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

RapidLux
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LG M50 looks somewhat similar to Vapcell 21700 5000 mAh, that is a rewrap of the Tesla 21700. Maybe the “T” in M50T denotes Tesla version of the cell LOL

BlueSwordM
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Actually, that is a possibility, knowing that Tesla contracted LG Chem for the Model 3 production in China.

@HKJ, what kind of material is the cell casing made of?

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

SubLGT
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The discharge curves of the M50 and M50T look identical, except that the M50T has less capacity.

HKJ
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BlueSwordM wrote:
@HKJ, what kind of material is the cell casing made of?

Some sort of metal, sorry I am not a metallurgy expert.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

BlueSwordM
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Of course. But is the casing attracted to a magnet?

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

HKJ
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BlueSwordM wrote:
Of course. But is the casing attracted to a magnet?

It do and quite well.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

RapidLux
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Actually I doubt it. Because, according to the 10A discharge curve of M50T, it seems to release considerably more heat than the old 21700 Tesla / Vapcell battery. At least there must be another reason why they choose that battery instead.

Superstocker
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HKJ wrote:
Superstocker wrote:
Thanks HKJ! Do you happen to know what the ‘T’ or lack thereof denotes?

No

Thanks anyway.

Barkuti
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Just found a small bug in the battery comparator, Henrik. When this cell is selected at the right side, its 2A discharge curves appear red colored (!) instead of blue:

 

 

Superstocker wrote:
… Do you happen to know what the ‘T’ or lack thereof denotes?

 Turd. Big Smile 

HKJ
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Barkuti wrote:

Just found a small bug in the battery comparator, Henrik. When this cell is selected at the right side, its 2A discharge curves appear red colored (!) instead of blue:

I wonder how that happened, anyway a regeneration of the data fixed it.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

vapcell Dennis
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T stand for Tianjin, China
LG chem tianjin factory

Just check the M50 and M50T datesheet is not the same Tired

Superstocker
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vapcell Dennis wrote:
T stand for Tianjin, China
LG chem tianjin factory

Just check the M50 and M50T datesheet is not the same Tired

Thanks!