Takes awhile to reach full charge but lasts a long time. Will report back after 500 recharges.

In my past search for 10,000 mAh battery cells I have found other battery cells are not always the capacity advertised. I am pleased to say these cells are exactly as advertised.

You can see in the complete discharge current profile (attached image) for the Tenergy 10105 battery cell, discharged through a 1.13662 ohm 30W resistor over 13h45m
Start voltage: 1.421 V
End voltage: 0.947 V
Measured capacity: 10,081 mAh

Very happy so far , bought for a emergency radio seem to have good power and recovery.

The batteries charge well, my tester says they are fully charged. But won't work in deer sensor, which is what I bought them for. Regular alkline batteries work fine but I wanted to be less wasteful and more buget minded.So I have costly batteries that are just sitting here. If you only want them for a flashlight they are ok but seem to run down fast, in a couple of hours of continous use. I would not recommend them.

My home flashlights now all work,..all the time thanks to these rechargeable long lasting D cells.

My flashlight are no longer a place to keep dead D size batteries .

These batteries are like a hard boiled egg,....Unbeatable ;-))