Sofirn Q8 Plus Review

LED Flashlights – General Info 21700 Flashlights
22

I’m impressed with this light. Only $65 it cost.

It does get very very hot quickly.

I set the thermal ceiling as high as it could go.

Just a simple outdoor runtime test. Temperature 54 F. I ran it for a total combined time of 8 minutes on Turbo setting. Incremental. First one was 2 minutes and then the following six were one minute Turbo bursts.

In between was 22 minutes of a very low setting probably ~300 lumens. To cool it off.

Total of 30 minutes. Voltage was 3.773.

8m on Turbo/ 22m low~300L.

This light on turbo appears to be a little brighter than my x75 on high. And that’s supposed to be 17K to 20K lumens.

23

Here is a comparison of an absolute quality cell and an average cell.
Doing this cuz my 50S are 2 years old!

Just did the capacity test on the 3Sofirn 5000mAh. The medium for the three cells is 4762mAh
My 2 year old 3 Samsung 50S, 250 cycles, only 3% capacity loss during that time.
The medium for those three cells were 4742 mAh! Basically the same capacity as the brand new Sofirn and they were used for 2 years.

1 Thank
24

Just wanted to report Q8 plus still charges batteries to 4.27V. I’ve read about this issue somewhere but it seems to be not fixed.
Anduril was updated.

Can this be fixed in some easy way?

25

DeepSeek Here:

According to the IP5310 datasheet:

To set the charging voltage to 4.2V, leave the VSET pin (Pin 3) unconnected (floating). (looks like it is floating- not connected)

This is the default setting. The other options are:

  • VSET connected to GND: Sets charging voltage to 4.35V

  • VSET connected to BAT: Sets charging voltage to 4.4V

In short: Do not connect anything to Pin 3 (VSET) for a 4.2V battery.

is it posible to set voltage lower than 4.2?

Based on the provided datasheet for the IP5310, it is not possible to set the charging voltage lower than 4.2V through user configuration.
So, it is as it is ;)))

2 Thanks
26

Thanks @Quadrupel, I’m not a pro, like you, so I read between the lines the answer to

is simply NO

:joy:

27

Don’t have a fix, but just here to share my experience with my unit purchased in June. Mine initially charged the cells to 4.22V, but after a cycle or two started to terminate correctly at 4.20V. It’s unclear whether your overcharging issue is a software fault (programmed to overcharge) or just failure of the algorithm to respond correctly to certain cell characteristics (e.g., old vs new cells having different CC/CV durations).

All of my chargers in general tend to overcharge new cells and undercharge old ones. If you have some older cells, try to see if the light overcharges it to the same voltage, or less severely.

1 Thank