The Opus BT-C3100 can be opened to change from 4.2v to 4.35V or 3.6V on a small 3 position slider switch inside.
Beware however, as I ended up damaging the mini fan when I removed the back cover, as the Fan was partly glued in place (on Version 2.0), to be as quiet as possible. Howled once refitted!
I bought a new fan, now much quieter, and drilled a small slot (tip from another Member) in the bottom cover, so I can now change the setting, without any further dismantling being needed.
Why is that strange ?
Just there are flat top and button top batteries, this ones are flat top, if you need to connect in series buy a button top, or use a magnet, and you do not need to solder it, I do not see why you need to solder it, just put it and magnet will stand firmly, when you donât need it, just removeâŚ
We have talked about this in another thread, canât remember which one; but some of the LiitoKala 26650âs will work in series. The flat top is tall enough to make it happen. No rhyme or reason to it though?? :person_facepalming:
I have 18 of them and roughly half of those will work in series. A couple of other guys reported similar results.
Yep, there is no button top, they do not produce it so if you want a button top go with Keeppower, Efest, EnerpowerâŚ
Magnet can slip ? Hmm, I think this is not possible or you have some bad magnets.
If you do not like magnets, apply a solder blob on the + end.
Possible, since there is Sanyo GA that it flat top, but + end is enought protruding that can be connected in series.
I wanât to buy them, since I using KP and they are too expensive and I donât have more money to buy KP again. I will order from the link that I provided that âânewââ LK dark-gold, and I hope that they are genuine.
Ok from that point I can assume that there are many liito kala 26650 versions, some genuine some not.
Look at this, according to website http://www.liito-kala.com/ ( I donât know is this theirs official website ), official Ali store is : https://liitokala.aliexpress.com/store/133859
But when you look at 26650 offer you can find only one type of a battery :
And since they are 4 years old ( most of all others ), there is confirmation of new version of cells from GB, I get answer from them, I suppose that they are genuine store.
Definitively the LiitoKala brand is doing their stuff right. For whatever reason they've changed their 5000mAh cell provider, and this results in a completely new wrap with a clear âthis is a different cellâ insight.
Now, let's wait for HKJ to review 'em LoL. If any of you gives him notice say so please. ;)