Samsung INR18650 25R V2 "Mini Hulk" High-Drain 20A/35A Discharge 3.7V 2500mAh Rechargeable Lithium Battery (Flat Top)

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We finally got our hands on a reliable supply of Samsung 25R v2s. This improvement over the original 'Smurf' 25Rs features improved temperature load & reliability

Prices of Samsung cells have been lowered in general for us and we are reducing the prices to pass on the savings to you




Nominal Capacity: 2500 mAh

Nominal Voltage: 3.6V
Discharge End Voltage: 2.5V
Standard Charging Current: 1.25A
Charging Voltage: 4.20+-0.05V
Max. Continuous Discharging Current: 20A / Pulse Current: 35A
Dimensions: 64.85mm (L) x 18.33 mm (D)
Weight: 45.0g



Regarding Exchanges/Warranty

Due to the nature of this consumable product, no returns/exchanges with this product or other replacements are allowed unless the product is DOA

Warranty coverage will be 3 Months Full Warranty (against explosions/leakage/venting) unless battery has been found to be pushed beyond its stated specs, misused or overdischarged 



  • CAUTION: when working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mis-handled
  • User should have enough knowledge on Li-Ion rechargeable batteries in charging, discharging,and assembly before use
  • Put the batteries in fire-proof container when bringing them out or when they are not in use
  • Do not put batteries on wood surface, carpets or flammable materials when charging
  • Never leave battery un-attended when charging (especially overnight)
  • We are not responsible for any damage(s) to property or injuries if there is any modification of the batteries in form, shape, or when made into packs
  • We are not reponsible for any damage(s) to property or injuries arising from possible explosions, leaks or fires resulting from the use or misuse/mishandling of these Li-Ion batteries


3 Months Full 1-1 Exchange Warranty

4 Reviews Hide Reviews Show Reviews

  • 4
    Good battery life, no complaints at all!

    Posted by hanjipeng on 29th Jan 2016

    Definitely worth getting, i can push 2 of these at 80 watts in series and they only get slightly warm.

  • 5
    Super affordable, reliable and 100% authentic.

    Posted by Not Voop on 27th Oct 2015

    Come on now, we all know you're not buying these for a flashlight.

    Did some reviews and came to the conclusion that these are the updated version of the Samsung 25R blues, which already are an outstanding battery for all intents and purposes.

    In my device these last me about 3-4 days of moderate use.

    Got it in my mailbox within 2 days, came in nice, safe bubblewrap, ample packaging and a safety card.

    Buy with confidence!
    Darth Voop.

  • 5
    Favourite Battery

    Posted by Zulfikar on 21st Oct 2015

    I currently have LG (choc bar), sony vtc5 and this mini hulk but the mini hulk is definitely my favourite. It last longer than the vtc5. Power delivery is also as consistent as the other two brands. Lastly, it is the cheapest among the three. Will definitely recommend this battery to others.

  • 4

    Posted by farismouse on 1st Oct 2015

    Good and genuine battery. True to its price. Safe and reliable.