I do not recommend this charger. Display says full charge 4,20V. Per Multimeter it charges to 4.28V. You must set the charge rate each time. First this is a pain. On 4200MAH 26650 if set to 3A the charger will overheat possibly damaging the battery. The issue is it is much too easy to accidently set it to 3A. It just fits 21700 barely. I feel this is low quality and can pose dangerous.
I highly recommend Efest Luc chargers. Charge to 4.22V but on display 4.20V. Max 2A in 2 bays easily set. Barely fits 21700 but in my experience not tight enough to rip wrappers. These are good chargers. No issues at 2A on 3,000MAH or more battery. Can charge at .5,1,2A. Again easily set for all bays at once. It stays where you set it. The Folomov must be set each time and it is very slow to recognize button clicks to set. I have realized over 500 charge/discharge cycles at 2A using Luc chargers. So that is very good. Does not even get warm let alone hot on 2A. Measured with laser thermometer to be at 22C. Ambient temp is 73F here. So it is actually lower charging than ambient. Very good.
If using 21700 I recommend Ijoy. They are made in Japan and not a rewrap. They will take a lot of abuse but of course I do not recommend abusing them.
Very disappointed with the Folomov but YMMV of course.
I was wondering though if anyone knows a great charger that easily fits 21700's charging at least 2 at 2A simultaneously? I have carefully studied the chart but cannot get many of them and it is also confusing to me. Even though it would seem straightforward. Can anyone recommend one that is very mainstream I am likely to find in a B&M? Although the Luc does actually work fine. Just wish the sliders had about 2 more MM to them.
I highly recommend Efest Luc chargers. Charge to 4.22V but on display 4.20V. Max 2A in 2 bays easily set. Barely fits 21700 but in my experience not tight enough to rip wrappers. These are good chargers. No issues at 2A on 3,000MAH or more battery. Can charge at .5,1,2A. Again easily set for all bays at once. It stays where you set it. The Folomov must be set each time and it is very slow to recognize button clicks to set. I have realized over 500 charge/discharge cycles at 2A using Luc chargers. So that is very good. Does not even get warm let alone hot on 2A. Measured with laser thermometer to be at 22C. Ambient temp is 73F here. So it is actually lower charging than ambient. Very good.
If using 21700 I recommend Ijoy. They are made in Japan and not a rewrap. They will take a lot of abuse but of course I do not recommend abusing them.
Very disappointed with the Folomov but YMMV of course.
I was wondering though if anyone knows a great charger that easily fits 21700's charging at least 2 at 2A simultaneously? I have carefully studied the chart but cannot get many of them and it is also confusing to me. Even though it would seem straightforward. Can anyone recommend one that is very mainstream I am likely to find in a B&M? Although the Luc does actually work fine. Just wish the sliders had about 2 more MM to them.