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Samsung INR21700-50E 4900mAh - 9.8A

Additional Information

EAN / GTIN  8438493108880
Weight - g  69
Brand  Samsung
Model  INR21700-50E
Size  21700
Battery chemistry  Li-ion
Voltage  3.6V
Min. capacity - mAh 4,850.00
Typ. capacity - mAh 4,900.00
Battery version  Flat top
Discharge current - A 9.80
Circuit protection  Unprotected
Height - mm 70.60
Diameter - mm 21.10

Availability: Pre-order. Estimated shipping date: 30 juli 2024 (in 44 days)

This product is for pre-order, we don't have it in our warehouse yet but it is in transit to us from our supplier. The shipping date is an estimated date.
  • Buy 12 times for €2.92   
  • For solder tags a setup fee of 5 euro per order will be added to shipping cost:

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Standard discharge capacity: 4900mAh (0.2C discharge)
Rated discharge capacity: 4753mAh (1C discharge)
Charge voltage: 4.2V
Nominal voltage: 3.6V
Charging method: CC-CV
Maximum charge current: 4900mA
Maximum continuous discharge current: 9800mA
Maximum pulse discharge current: 14700mA
Discharge cut-off voltage: 2.5V
Cycle life: 500 cycles to 3802mAh (80%)
Operating temperature: Charge: 0°C ~ 45°C, discharge: -20°C ~ 60°C
Storage temperature: 1 month: -20°C ~ 60°C, 3 months: -20°C ~ 45°C, 1 year: -20°C ~ 23°C

Additional Information




Customer Reviews

super affaire. Review by herve
J'ai recu les accus en moins d'1 semaine. j'ai testé la charge et la decharge avec un testeur la capacité est bien de 4900mAh. merci c'est une super affaire.
I received the batteries in less than a week. I tested charging and discharging with a tester, the capacity is 4900mAh. thanks this is a great deal. (Posted on 09-11-22)
Very good! Review by Valerij
Good, "honest" elements (Posted on 09-01-21)
Samsung INR21700-50E 5000mAh - 10A Review by Ben R. Eindhoven
It's getting a bit old but everything was as usual: Great battery. great service, acceptable pricing and fast delivery. You're welcome. (Posted on 16-10-20)
Custom battery for DIY ebike Review by AlexI
In my opinion INR21700-50E cells were the best. I made a pack 13S5P pack for a 21kg bike with front wheel drive 500W motor. I can ride 100-120km at avg speed of 40km/h (assisted). Did 11 charge/discharge cycles till now and didn't noticed any cell degradation. (Posted on 27-08-20)
Excellent Review by Patrik
The ones i've tested at 0.5A have been 5000-5200mah but will do more tests at thebatterydoctor.eu (Posted on 06-01-20)
Excellent quality cells, handles a lot of abuse - physical and electrical. Review by Alexey
Used some 50E cells for my e-bike. Went off-roading with my friend. 200 km in total, no road at all. My friend now needs new battery. His previous was built out of no-name Chineese cells. They didn't survive mechanical stresses. Now he is planning to re-use old tesla battery modules. I'm buying more 50E's. We'll see who wins next summer :)
(Posted on 28-12-19)
Perfect also for Spektrum iX12 with two cells in parallel. Review by Johan
Increases capacity from the original 6Ah to about 10Ah. Very pleased with these cell and the price. (Posted on 30-10-19)
excellent Review by Stoimen
For guitar amplifier 150w (Posted on 30-07-19)
Perfect for Spektrum DX6e, DX8, DX9 RC transmitter. Review by Johan 53.
It is important to have the cables on top of the cells for these Spektrum transmitters because space is limited. Have two in series and charging is done via a balance connector.
(Posted on 02-07-19)
so far so good Review by ah bous
received and cycled today ...result 42m ohm internal resistance and 4927 mah @1.5 ah discharge , real capacity ( measured during discharge ) on the first cycle .
pretty good ! (Posted on 29-06-19)
perfect for high ohm/low amp vaping Review by K
using a single 21700 with 18 watts/1.4 Ohm @3.3A. last me a whole day. after shutdown in joyetech espion solo the cell takes about 4300mah until full. replaced in my case a double 18650 setup and last about the same time (Posted on 26-05-19)
good battery Review by Vadim
69.4g ( with u-tag) , Ir = 31-34 mOhm.
Full charge - discharge 1A ,cutoff 2.5V, C=4.895Ah, E=17.7Wh.
Full charge - discharge 1A ,cutoff 2.8V, C=4.780Ah, E=17.4Wh.
Full charge - discharge 1A ,cutoff 3.0V, C=4.590Ah, E=16.8Wh.
Full charge - discharge 1A ,cutoff 3.2V, C=4.350Ah, E=16.1Wh.
Full charge - discharge 1A ,cutoff 3.4V, C=3.790Ah, E=14.2Wh.
Full charge - discharge 1A ,cutoff 3.6V, C=2.650Ah, E=10.2Wh. (Posted on 27-12-18)

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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