I'm not sure... I think it's Samsung... or was supposedly to be. It's unbranded ( by which I mean it doesn't say Samsung on it anywhere ) which worries me. I bought it 2 years ago and it's sat on the side unused until now. I don't have an external charger so just using the USB port at the mo.
It could just be a rubbish cheap battery... I'm charging it maybe 3 - 4 times a day.
I'm guesssing ( obviously ) a new battery could be advisable.... and I've seen posts saying that external battery chargers are advisable as well ? I'm happy to invest as in the long term it saves me money... so far in the short term I've had this I estimate I've saved £12-£15 on cigarettes which is probably a conservative guess. That's a great thing... plus I don't feel quite so congested in my lungs.
These days I wouldn't like to take it out on its own for fear of battery failure... and after my disaster with the zelos I want to make sure it doesn't leak... which using at home I'm pleased to say still hasn't.
Let me know your thoughts... always open to suggestions.... happy with my purchase so far and is doing it's job... it's battery longevity that's the concern.
Still running 0.8 ohm / 15 watts. I've just started a 2nd bottle of juice. 925 puffs on the counter since I started using it from the day or purchase. Charged maybe.... god I dunno 8 times? The charge from yellow to full green takes less than half an hour which seems strange. Only hit the red bar once and instantly started charging from yellow. Again... it charged in less than 30 mins and switched the charge screen off itself.
@OzoreXS your suggestion on the Sony battery .. have you used one in a Kroma R?