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Samsung INR21700-40T 4000mAh - 35A

Additional Information

EAN / GTIN  8438493108903
Weight - g  67
Brand  Samsung
Model  INR21700-40T
Size  21700
Battery chemistry  Li-ion
Voltage  3.6V
Min. capacity - mAh 3,900.00
Typ. capacity - mAh 4,000.00
Battery version  Flat top
Discharge current - A 35.00
Circuit protection  Unprotected
Height - mm 70.10
Diameter - mm 21.00

Availability: In stock

  • Buy 11 times for €3.54   

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Nominal Capacity - 4000 mAh
Continuous discharge current - 30A
Nominal voltage: 3.6V
Maximum voltage: 4.2V
Top: flat top
Type: Lithium ion
Size: 21700

Additional Information




Customer Reviews

not completely satisfied Review by Daniel
Ordered 90 for 6p 14s battery, around 2/3 of them came with voltage 3.43, the rest was < 3.30, several were below 2 volts, and one was 0.8 v ! Which for me means that batteries haven't been stored in equal circumstances, or probably the seller has mixed old and new ones. Performed capacity test shows that average capacity is around 3750 mAh (discharging from 4.15 v to 2.5 v at 0.9A). The one which came at 0.8 v also scored near 3700 (at least it has some capacity left). Giving a 3 of 5 stars. Although fair is 2, voltage below 2 V is not healthy... Now looking for the LG cells but I really hesitate, I don't know what to expect... (Posted on 08-04-23)
Very nice batteries for FPV long range! Review by Robert Olsson
So i purchased these Samsung batteries to solder a 6S pack for my long range 7inch quad , 30 min in the air is easy! (Posted on 09-08-20)
Top Akkus Review by Matthias
Ich benutze 1 Paar jetzt etwa 6 Monate und konnte noch keine Einbußen feststellen. Für mich die besten 21700er Akkus !!!
I have been using 1 pair for about 6 months now and have not noticed any losses. For me the best 21700 batteries !!! (Posted on 06-07-20)
samsung 40t Review by Oliver
best 21700 from the best european store for genuine batteries.

thx (Posted on 18-05-20)
Perfect Review by Cannabiz
These are the best Batteries for Ezigarettes and for both Mech Mods + Normal ????????????????????

Really Good for Mods with 1 Cells. Top ???? (Posted on 02-03-20)
Fantastic battery, good price, good store? Review by Frank
Hi I bought these cells, to build a 6s pack for a 7inch long range drone 1200kv motors. these cells offer more capacity / weight than lipo, but indeed discharge current is lower, so to be gentle on the throttle. For moderate flying and cruising this is perfectly fine. Maybe we can get current further down, by moving to drone setups and LION, become serious contenders against LIPO.

This Samsung 21700 battery is currentlyone of the best cell at the market, the other contender would be the Molicell INR21700. Both have better performances than 18650 or 26650 sizes.

NKON is a reliable source, quick shipping decent prices.
One advice, could you include the IR value for the cells in the specifications?

(Posted on 14-01-20)
Best battery for mechanikal mods! 5 star! Review by Igor
Original, very good! (Posted on 24-08-19)
great Review by jumpy
for me great batteries,normally i use all over the day and still has power when i put them on the charger (Posted on 24-07-19)
Super battery Review by Mons
A small 2p14s pack made from these cels made my ebike powerful and light. Perfect for short fast trips, runs great at 30 amp. (Posted on 13-07-19)
Samsung 21700 40T Review by Alain
Très bonnes batteries reçues en quelques jours, bonne tenue, bon ampérage permettant des résistances basses. NKon est vraiment un fournisseur incontournable avec des prix très compétitifs !
Very good batteries received in a few days, good performance, good amperage for low resistance. NKon is really a must-have supplier with very competitive prices! (Posted on 05-03-19)
Perfect Review by Emmanuel
If you need a genuine and solid 4000mAh in a 21700 then look no further!
Runs great at 25/35A (Posted on 15-02-19)
Very good Review by Matt_SI
Superb battery for vapers but Samsung 30T is overall better for Mods with one battery. (Posted on 22-01-19)

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Take care

  • Li-ion batteries can be dangerous when used wrong, short circuit or wrong usage can lead to fire or an explosion
  • Do not put the battery in a charger or equipment with wrong terminals connected
  • Never short cut the battery. Take care you don’t short cut it accidentally, do not put it in your pocked together with bunch of keys
  • Do not disassemble or deform the battery. Dispose it if the battery is deformed
  • Do not immerse in water
  • Avoid excessive physical shock or vibration
  • Do not expose to, dispose of the battery in fire
  • Keep out of the reach of children
  • Never use a modified or damaged charger
  • Do not leave battery in charger over 12 hours
  • Store the battery in a cool, dry and well-ventilated area
  • Dispose of in accordance with local regulations
  • Do not solder on these cells