Keeppower 18650 3500mAh P1835U (Blue-white) 2017

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Official specifications: Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-info

A high capacity battery with build-in usb charger.

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Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-Capacity

The discharge curves tracks perfectly.

Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-Temp-5.0

The batteries do not get too hot at 5A. The overload protection is a bit temperature depend and one of the cells trips at 5A.

Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-CapacityTimeHours

Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-CapacityTime

Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-Energy

Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-PowerLoadTime

Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-TripCurrent

Keeppower%2018650%203500mAh%20P1835U%20(Blue-white)%202017-Charge

Keeppower%2018650%203500mAh%20P1835U%20%28Blue-white%29%202017-Charge

Charging with the build-in charger, maximum charge current is about 0.8A and maximum charge time a bit below 7 hours. Termination is around 50mA.



Conclusion

Easy to use battery with protection and build-in charger.
I will rate this a good battery.



Notes and links

The battery was supplied by Keeppower 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
Compare to 18650 and other batteries