Samsung INR18650-30Q Battery 15A 3000mAh - Flat Top - Wholesale Discount, Genuine and Tested


  • $ 5.69
  • 18

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Genuine Samsung 30Q 3000 mAh batteries.  This is an amazing cell, extremely low internal resistance similar to the 25R but with a higher capacity of 3 Ah.  A great battery for 10-50W per battery devices.  As always, we've done extensive testing to be sure they're real so you can be confident you've got the real thing, grade A.  


  • Chemistry:  INR
  • Max Continuous Discharging Current: 15A
  • Typical Capacity: 3000mAh
  • Style:  Flat top
  • Dimensions: 64.85 ± 0.15 mm (L) x 18.33 ± 0.07mm (D) 
  • Weight: 48g max
  • Discharge cut-off voltage: 2.5V
  • Internal resistance:  ~20 mOhm
  • Nominal Voltage: 3.6V
  • Full Charge Voltage: 4.2V ± 0.05V
  • Unprotected
  • Origin:  South Korea

Battery safety is very important.  Mistreated batteries can get extremely hot and/or vent which could cause injury.  Always follow the following rules to make sure this doesn't happen.  We are not liable for mistreated batteries.



  • Never completely discharge batteries (below 2.5V under load or 3V unloaded).
  • Charge fully (to 4.2V) before first use.
  • Never use a lot of force on the battery to install
  • Use only high quality battery chargers.
  • Do not expose to heat.
  • Do not connect the positive contact to the negative contact without an appropriate load.  
  • Be mindful of the current limits in the specification and never exceed them.
  • Never keep a spare battery loose in a pocket, purse, etc.  Always use protective cases for loose batteries.  If it shorts against a piece of metal it can be very dangerous.
  • Never charge battery 4.3V or above.
  • Do not charge unattended.
  • Do not store your li-ion batteries fully charged for an extended period of time (weeks or more)
  • If you must store battery then do it in a case or individual box in cool and dry place at approximately 3.6V - 3.7V.
  • Never try to charge or discharge li-ion batteries with battery chargers that are not made for Li-ion batteries. 


    Customer Reviews

    Based on 18 reviews
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    • Reviews (18)
    • Questions (0)

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    Your input is very much appreciated. Share it with your friends so they can enjoy it too!
    Harvey W.
    United States

    Better than I expected

    Better than I expected, they seem to be Grade A battries. Genuine Samsung batteries as far a I can tell. They seem to be as good if not better than some I purchased from another supplier.


    Liion Wholesale Batteries

    Hi Harvey - just to set your mind at ease, all of our products are genuine, grade A batteries :). We absolutely guarantee this. Thank you for your review, hope you continue to enjoy the 30Q's.

    Clay G.
    United States
    • What device/application do you use this with? Dual 18650 VW/TC Mods and mech mods

    Super happy with these batteries!

    The capacity on these batteries is awesome! Dual 18650 mods work great with these samsung 30Q batteries. 80 watts and they just go and go. Great batteries and great prices!

    Christopher H.
    United States
    • What device/application do you use this with? Lost Vape Epetite DNA 60

    Quality Product

    A really great battery from a known and trusted vendor.Excellent run time and you just know them to be authentic.Super fast shipping and great prices.My go to company for all my battery needs.

    Marc M.
    United States



    Alan S.
    United States

    great batteries

    these are the real deal...I use them in high lumen flash lights an vape modes..they have the power you need...I will be getting more from this vendor soon...great prices an he ships so fast...I order on monday an get wed

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