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​Grepow Low-Temperature Battery breaking thought to -55℃ / -67℉ discharge

2021-05-29

11 Jan, 2021 - Grepow release the latest low-temperature series to break through the lowest discharge temperature to -55℃. This series of Lithium polymer pouch cell batteries, discharge at -55℃ to 2.5V can remain a maximum of 63.5% discharge efficiency.

Grepow Low-Temperature Battery breaking thought to -55℃ / -67℉ discharge


-55℃ Ultra Low-Temperature Lithium Polymer Battery


We conduct the testing at -55℃ with 0.2C rate discharge, without any pre-heated function or materials, according to the discharge curve below, the battery can successfully discharge at -55℃ and remains 63.5% efficiency. The first dropping point is around 2.7V and maintains a stable voltage till the cut-off voltage 2.5V.


-55℃ Discharge Testing Test


Grepow Low-Temperature battery can operate normally and stably at -55℃


Test Items
Battery Temperature Range: -55 ~ +50℃
-55℃ 0.2C Discharge
Discharge to 2.5V @Capcity (mAh)
1993.8
Discharge to 2.5V @Discharge Efficiency
63.5%


It shows that the Grepow Low-Temperature battery can operate normally and stably at -55, it is the strength to compare with most low-temperature batteries on the market, they are cautious about 30% efficiency at -40 or -50℃, and even unable to discharge electricity.


-50℃ Discharge Testing


Grepow Low-Temperature battery operates at -50℃, can reach a maximum of 83.8% efficiency with 0.2C rate discharge


Grepow Low-Temperature battery allows 0.5C rate discharge at -50℃ temperature environments


Test Items
Battery Temperature Range: -55 ~ +50℃
-50℃ 0.2C Discharge
Discharge to 2.5V @Capcity (mAh)
2626.65
Discharge to 2.5V @Discharge Efficiency
83.8%
-50℃ 0.5C Discharge
Discharge to 2.5V @Capcity (mAh)
2542
Discharge to 2.5V @Discharge Efficiency
81.1%

Grepow Low-Temperature battery operates at -50℃, can reach a maximum of 83.8% efficiency with 0.2C rate discharge, it also allows 0.5C rate discharge at -50℃ temperature environments.


-40℃ Discharge Testing


At -40℃ low-temperature environment, Grepow battery can reach a maximum of 88.74% efficiency with 0.2C rate discharge


Grepow Low-Temperature battery


At -40℃, Grepow Low-Temperature battery1C high rate discharge with 86.1% efficiency


Test Items
Battery Temperature Range: -55 ~ +50℃
-40℃ 0.2C Discharge
Discharge to 3.0V @Capcity (mAh)
2304.35
Discharge to 3.0V @Discharge Efficiency
73.89%
Discharge to 2.5V @Capcity (mAh)
2767.4
Discharge to 2.5V @Discharge Efficiency
88.74%
-40℃ 1C Discharge
Discharge to 3.0V @Capcity (mAh)
2006.6
Discharge to 3.0V @Discharge Efficiency
64.3%
Discharge to 2.5V @Capcity (mAh)
2683.4
Discharge to 2.5V @Discharge Efficiency
86.1%


At -40℃ low-temperature environment, the battery can reach a maximum of 88.74% efficiency with 0.2C rate discharge, and a maximum 1C high rate discharge with 86.1% efficiency.


About Grepow


We are an advanced technology company specialized in the research and production of pouch cells of NIMH, Li-po batteries, LiFePO4 batteries and development of power management systems (i.e. BMS) and Semi Solid Batteries. After decades of development, Grepow is now one of the largest manufacturers of high C-rate, high voltage and low-temperature batteries in China.


Please feel free to contact us by email at info@grepow.com if you are interested in our ultra low-temperature batteries.



info@grepow.com