Samsung INR18650-30Q 15A 3000mAh Flat Top 18650 Battery - Genuine - Wholesale Discount


  • $ 4.43
  • 280 reviews

SKU: samsung30q

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.  

Note that these can either be made in Samsung's South Korea or Malaysia plants.  These batteries are equivalent with the same part number and you may receive either one since they are commingled.  The Malaysian ones are listed as Samsung SDIEM whereas the Korean ones say Samsung SDI on them.

Samsung 30Q Datasheet


  • Chemistry:  INR
  • Max Continuous Discharging Current: 15A
  • Typical Capacity: 3000mAh
  • Size:  18650
  • Style:  Flat top
  • Approximate 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 or Malaysia


Batteries are sold individually.

If your battery is damaged or defective on arrival (will not take its first charge, or has issues with its first cycle), please let us know within 14 days of receiving your order and we'll make it right. Please read our complete store policy on defective products here for more information and to see if you're eligible.

Manufacturer ratings: Please see more information regarding manufacturer ratings here.

Battery Warning

Warning: Lithium ion batteries may explode or burn due to improper use. Using these batteries for purposes not intended by the manufacturer, including outside a battery pack and/or without a BMS, may cause severe injury and damage. We are not responsible for any injuries caused by lithium ion batteries - use at your own risk.

All rechargeable batteries have inherent risks under any circumstance. Use caution with working with li-ion batteries (lithium-ion), LiPo (lithium ion polymer), and any rechargeable cells (together "rechargeable batteries"), as they have dangerous charging characteristics and are known to explode or burn if mishandled. A purchaser and user of rechargeable batteries should educate themselves on rechargeable batteries, especially as to charging, discharging, assembly, and storage. Learn more about proper storage and care for rechargeable batteries here. We are not responsible for any damage caused by the misuse or mishandling of rechargeable batteries.

Here are a few tips:

  • Never completely discharge batteries (below 2.5V under load or 3V unloaded)
  • Charge fully (to 4.2V) before first use
  • Never charge batteries to 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 your battery, only store in a case or individual box in a cool and dry place at approximately 3.6-3.7V
  • 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
  • Never exceed the battery's specifications
  • Never try to charge or discharge li-ion batteries with battery chargers that are not made for li-ion batteries
  • Always charge these batteries on and within fireproof material
  • Never leave rechargeable batteries in a recharging station unattended
  • Do not use any rechargeable battery or charger if any visible damage is present, or if known mishandling, accidental or otherwise, has occurred
  • Always store and transport rechargeable cells in a safe, non-conductive container (never keep a spare battery loose in a pocket, purse, etc. and always use protective cases)
  • Properly dispose of all battery cells and chargers in accordance with local laws and mandates (if you're unsure, contact your local municipality)
  • If a rechargeable battery overheats, hisses, or bulges, immediately quarantine the battery from any combustible materials - ideally, take the battery outside
  • If a rechargeable battery catches fire, the FAA recommends pouring water or soda on the battery and surrounding areas - ideally, use a foam extinguisher to quell the fire

By purchasing this product, you agree that seller makes no warranties whatsoever with respect to the goods sold on this website, including any (a) warranty of merchantability or (b) warranty of fitness for a particular purpose, whether express or implied by law, course of dealing, course of performance, usage of trade or otherwise. Buyer acknolwledges that it has not relied upon any representation or warranty made by seller, or any other person on the seller's behalf. If purchasing for resale, buyer assumes all responsibility and agrees to forward all notifications and warnings to the purchaser.

Customer Reviews
4.9 Based on 280 Reviews
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Jesse H.
United States United States
  • What device/application do you use this with? Vaporesso Gen
Great batteries

Batteries work great!

United States United States
  • What device/application do you use this with? Vapes (Smok)
3 day delivery and 5+ battery

This review is a little late considering I purchased the Samsungs a cpl months ago, but I was waiting to receive a charger that can test the batteries capacity before I did the review. 1st, I ordered on a Friday before I started work. Monday afternoon, the batteries were sitting at my house. Less than 2 business day shipping? Can’t beat that. 2nd, The pink Samsung’s were on sale, and they were close to the same price of the next Samsung cheaper than this capacity, so I spend a cpl pennies more and got a better battery. And 3rd, after testing the batteries, each one of them had a capacity higher than the 3000 rating, and some, substantially higher. I’ve bought my batteries directly from China in the past: and waited weeks to have them delivered. I ran across this web sight one night, found out they were a cpl hours away from me, bought the batteries the next day, and found that I’ve never had a sale as perfect as this one was. I’ve recently started building power banks, and I’m currently working on a 26650 and 18650, and I’ll be sure to look liionwholsale up moving forward to buy my batteries for my new hobby.

Doug R.
United States United States
  • What device/application do you use this with? Electric longboard
Very happy with my Samsung 30Q batteries

I was very happy with the batteries. Very quick delivery! Competitive price.

David B.
United States United States
  • What device/application do you use this with? Fireflies PL47G2 flashlight
Great sales and service!

Excellent battery and shipping speed... plus a gift! What's not to like, thanks!

Alexa A.
United States United States
  • What device/application do you use this with? Aspire Star Revvo vape
Great quality, lasts all day for heavy vape use.

The batteries are the same great quality as those you can find at a storefront, they last all day for heavy vape users. My husband uses the Aspire Star Revvo vape.

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