i am planing to buy the Nitecore I4 charger because tell now i have this silly one cell chines charger and it takes about 8 hours to charge it so i needed to know how much time do a Nitecore I4 take to charge 4x 18650 2600 mA each
If the batteries are close to empty around 8 hours
It’s faster if you charge only 2 cells. That should be under 4 hours. Anyway, if you want a fast charger you might want to look elsewhere.
The i4 is notoriously slow, thats why i sold mine. The 0.5A is the absolute minimum i would agree for. Heck i think that 0.7A is the best, you can do that if you charge 2x cells only at time.
Charge two cells at a time, using 1st & 4th slot for faster charge on Nitecore i4, if not in a rush, just leave all four cells in and it takes longer charging time.
Do you need to charge Ni-Mh cell as well ? If not, take a look at Soshine S1 Max V3 for faster charge all four cells together.
I would recommend the LUC V4….or Opus if you want something better and faster.
thx for your inputs ,no i dont need to charge Ni-Mh cell so same thing now how much time do a Soshine SC-S1 Max 1-4pcs take to charge 4 18650 2600 mA each
Instead of asking for each charger model, you could just check the reviews. They includes curves where you can see the charge time in minutes, both for 1 cell and for a full load (Usual 3100mAh cells).
http://www.lygte-info.dk/info/indexBatteriesAndChargers%20UK.html
Is there a formula to calculate charge time vs capacity ?
Yes, except it's not that simple. Different chargers use different CC/CV curves, different batteries have differing levels of internal resistance, etc. For a very rough rule of thumb, you could say that a 2600mAh battery would take around 2.5 hours to charge on a 1a charger if it were only discharged to around 20%.