Nitecore 18650 2900mAh NL1829LTHP (Black-yellow) 2018

DSC_4394

Official specifications: Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-info

This is a protected 18650 cell that can be used at lower temperatures.

DSC_4372 DSC_4373

DSC_4395 DSC_4396

DSC_4397
DSC_4398
DSC_4399


Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-Capacity

THe normal test shows a good quality cell that can handle up to 5A, the protection trips if discharge for some time at 7A.

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-Temp-5.0

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-Temp-7.0

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-CapacityTimeHours

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-CapacityTime

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-Energy

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-PowerLoadTime

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-TripCurrent

Nitecore%2018650%202900mAh%20NL1829LTHP%20(Black-yellow)%202018-Charge

The test below is done in a freezer with free air around the battery, all equipment is outside the freezer.

Nitecore%2018650%202900mAh%20NL1829LTHP%20%28Black-yellow%29%202018-LowTemp-1.0

This is a 1A discharge at -20C, the batteries fairly fast increase their temperature with 5C and this improves the performance.
Note: Temperature curve is behind the internal battery temperature, i.e. the red curve will react way faster than the blue curve.

Nitecore%2018650%202900mAh%20NL1829LTHP%20%28Black-yellow%29%202018-LowTemp-2.0

At 2A discharge the voltage drops to nearly 3V, but recovers significantly when the battery heats up.

Nitecore%2018650%202900mAh%20NL1829LTHP%20%28Black-yellow%29%202018-LowTemp-3.0

The 3A discharge nearly hit the termination voltage, before it recovers. The batteries are above 0C when the discharge is done.



Conclusion

The battery is a good quality LiIon battery and it sort of works in the cold. The "sort of" is because it need to heat itself up to get some performance.




Notes and links

The battery was supplied by a Nitecore for review.

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