The Samsung 50S 21700 battery is built for applications that require both high capacity and high power output. With 5000mAh of energy and a 25A continuous discharge capability, this lithium-ion cell delivers consistent, dependable performance in demanding systems. Its flat top, unprotected design makes it ideal for professionally assembled battery packs where performance and efficiency are critical.
| Manufacturer | Samsung SDI |
| Model | INR21700-50S (50S) |
| Cell Size | 21700 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 5000mAh |
| Continuous Discharge | 25A |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Protected | No (Unprotected) |
| Rechargeable | Yes |
| Approx. Dimensions | 21.1mm x 70.7mm |
| Approx. Weight | 70.09g |
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Overall rating: 4.8 / 5 from 64 reviews.
I created a battery bank out of them using some holders I purchased from Amazon. Its 3 banks wired in series to 12V 6 Batteries per bank. I use it to run car chargers off a female cigarette lighter receptacle. Encased in a weather proof case for use when backpacking. Provides 120Amps for 30,000 MAH a car charger only pulls 5V at 3Amps ( Fast charger ) used it to charge my phone fully 5 times already moved .2V off of full. Very pleased all cells charged fully no defects.
I had to replace the batteries in my fan/power bank. The batteries arrived perfect and worked perfect. I have purchased from this store before and will continue to do so. The products are always as described and shipped very well. I would give this store a 10/10.
All as advertised 👍
To follow, às I am in the initial program creation of extending battery life of future projects such as handheld transceivers, and personal computer laptops by building my own battery to increase usage of laptops. I look forward purchases of high capacity 2170 or higher capacity of milliamp-hour single cells.
As per usual Samsung makes reliable and quality batteries.
Works very well for my Geek Vape Aegis Legend. My better than those cheap Amazon stuff, but it is not expensive.
They work awesome in my vape. Thank you 😁long battery life too.
Just another satisfied customer
Great cells for high capacity and decent discharge. Runs a little hot at max. I suggest to run it at half the rated ampacity to keep em cool.
This cels are an great option for my projects, all on good condition with same charge.
Easily the best price around for the battery I ordered
Fast shipping- good quaility batteries!
I used these batteries to repair 2 DeWalt 10AH batteries. Batteries are back to functioning correctly.
Great battery's fast shipping, and great pricing
Didn't fit my flashlight.
Great purchase. Worth the every penny!
Great batteries quick delivery
Worked great better than other batteries! Thank you!
Nice safe case. Replacing lesser grade batteries and it shows at full charge my flashlight is brighter.
Works. Only time will tell how long it lasts.
Worked as advertised. Quick delivery. No complaints.
Good product! Thanks
Quick delivery and excellent battery Highly recommended vendor.
another great purchase, thanks guys
Great products
Fast shipping, great product, and well packaged!! What's not to love.
Good product but processing and shipping are longer than necessary
These work great in my vapes
Great battery at a great price from a respected retailer.
Item was well packaged and arrived faster than expected
Great batteries. I'd been using a dual 18650 battery for my vape. I switched to a vape that could use 2 of these Samsung 50S 21700 5000mAh, I went from having to replace my batteries in less than 24 hours to once every 2 or 3 days.
they work fine in my L200 classic, but whe the power level is low the 25 amp really shows. less umph when power is low
Quality products at amazing prices!
I am an amateur and was afraid of being sold “knockoff” cells. These appear to be genuine Samsungs.
Ordered batteries and got what I needed
Good
Perfect packaging! Thanks!
I used them to replace bad batteries in a battery pack and they worked as expected. Great service!
Worked great!
Great cells. Thanks!
