Skip to product information
1 of 1


Samsung 30Q 18650 3000mAh Flat Top

Samsung 30Q 18650 3000mAh Flat Top

Regular price $12.50 CAD
Regular price Sale price $12.50 CAD
Sale Sold out

Samsung INR18650-30Q 3000mAh Battery - Flat Top

Manufacturer's Specs:

  • Flat Top
  • Nominal capacity: 3000 mah
  • Max Continuous Rated Discharge: 15 amps (at 25 degrees C)
  • Nominal voltage: 3.7v
  • After a fresh charge: 4.2v
  • Cycle info: Capacity drops to 60% after 250 full charge/discharge Cycles
  • Don't discharge below: 2.5v
  • Standard Charge: CC/CV @ 1 amp / 4.20 volts +/- .05v, 100 mA cut-off
  • (Max) Rapid Charge: CC/CV @ 4amps / 4.20 volts +/- .05v, 100 mA cut-off
  • Impedance: 22.15 +/- 2 milliohms
  • Weight: 45g
  • Height: 64.85 +/- 0.15mm
  • Diameter: 18.33 +/- 0.07mm
  • Operational Charging Temperature Range: 0 to 50 degrees C (best below 45 degrees C)
  • Operational Discharging Temperature Range: -20 to +75 degrees C (best below 60 degrees C)
  • You can store them for 1.5 years at -30 to + 25 degrees C, 3 months at 30 to 45 C and 1 month at 30 to 60 C (in other words, store them in a cool place and they'll last longer)

Ratings from Mooch

Samsung 30Q 3000mAh 18650…a great 15A/20 battery!

Bottom Line: This is a retest of the popular Samsung 30Q. The four cells I tested, two from IMRBatteries and two from Illumn, showed the expected great consistency in performance.

More info about this repost of these test results:

The Samsung 30Q datasheet (Section 7.9) mentions operation at 20A. Operation at that level can be done as long as we don’t let the battery get above 75°C, its maximum rated operating temperature.

But this is not a high performance “power” cell, designed for high current. It is a high capacity “energy” cell designed for low to moderate power levels and long running time. At higher current levels the voltage sag and power loss in the cell are huge. Do not exceed 20A.

I am giving this cell a continuous current rating of 15A (about 45W using 3.7V) and a temperature-limited rating of 20A (about 60W if using 3.7V) as long as the cell is never allowed to reach 75°C.

This is not a “pulse rating”! There is no pulse length, time between pulses, or criteria used for setting such a rating being defined. The 20A rating is any type of discharge as long as the 75°C limit is not reached.

The 18650 rating table has been updated with the 15A/20A rating for this cell.

A “shootout” of the HG2, 30Q, and VTC6, directly comparing their performance, will be posted in a few days.

Four cells were purchased for the purposes of testing by me.

Ratings graphic:

Test results:

These tests only note the estimated ratings for these batteries at the time I tested them. Any battery that is not a genuine Samsung, Sony, LG, Panasonic, or Sanyo can change at any time! This is one of the hazards of using “rewrapped” batteries or batteries from other manufacturers so carefully research any battery you are considering using before purchasing.

Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of personal injury or property damage. They are not meant to be used outside of a protected battery pack. Never exceed the battery’s continuous current rating and keep the plastic wrap and top insulating ring in perfect condition.

Any rating in the tables can change at any time as different grade cells appear on the market or we get swamped with fakes. Please, never assume that the ratings in the table are permanent and will never change! Always download the latest version before considering any cell purchase.

To see how other cells have tested check out this link:…/list-of-battery-tests.…/


No automatic alt text available.

View full details