Over 4000 mAh with a sizeable DC rate, nice.
Key Features
- Extended Runtime: 4250mAh capacity reduces recharge frequency in demanding applications.
- Reliable Power Delivery: 15A continuous discharge supports consistent performance.
- Optimized Charging Profile: CC-CV charging method enhances efficiency and battery life.
- Thermal Operating Flexibility: Designed for a broad range of charge and discharge temperatures.
- Compact Energy Density: High volumetric and gravimetric energy density in a 20700 format.
Overview
The Sanyo NCR20700B is built to deliver dependable energy for high-demand applications that require both capacity and stability. Offering a typical capacity of 4250mAh and a 15A continuous discharge rating, this flat top lithium-ion cell is ideal for professionally designed battery packs. Its efficient charging characteristics and robust construction ensure consistent output and long service life.
Applications / Uses
- Electric mobility systems
- Power tool platforms
- Industrial electronics
- Commercial battery pack assemblies
- High-capacity energy storage solutions
Specifications
| Manufacturer | Sanyo |
| Model | NCR20700B |
| Battery Size | 20700 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 4250mAh (typical) |
| Max Continuous Discharge | 15A |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Protection | No (Unprotected) |
| Rechargeable | Yes |
| Approx. Dimensions | 20.35mm x 70.3mm |
| Approx. Weight | 63g |
⚠ Important Safety Warnings
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.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
-
Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
Disclaimer
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.
Customer Reviews
Overall rating: 4.8 / 5 from 44 reviews.
Thanks
These are great batteries for vape mods. They last longer than any other battery that I have used.
Batteries work great.
Battery was too large and would not fit in my light. Didn’t realize it is wider and can’t return them.
Lasts longer than any of my 21700s
Excellent product and fast delivery. Thanks
Outstanding
Ordered the battery I was advised to get and it was wrong. Tried to return it but the company would not let me
As Ordered...
Love the large capacity, love the sanyo brand, last for years with good output
Good batteries!
.
I haven't been able to test the batteries out as many times as I'd like but so far they seem to be doing good for the purpose I am using them for. Hopefully they'll last through multiple charge/discharges unlike the batteries they replaced.
Always great service, fast shipping.
Great batteries! Got more range out of my electric skateboard than expected with these!
I use these batteries on my single battery squonkers. Normally vapes on 25-40 watt range. Easily will get through the whole day in one battery:+1:
Nice size option for building e-bike pack. Standard nickel double strip lines up fine. Good reviews out there on these calls!
These batteries worked great in a rebuild/upgrade of a pack that originally used Samsung 30Q cells. I was impressed that they all had the same voltage within 0.02v right around the nominal range at 3.5
These are solid batteries but noticed they have slightly weakened over the weeks one worse then the other. Sure they would do well in a dual battery mod but mine is a single. Just ordered a set of the NCR20700A since they are rated at 30A draw.
mod or battery stop working. Need to have mod and battery checked.
I've had many types and brands of batteries since ive been vaping, and the Sanyos are some of the strongest long lasting batteries I've come across yet...highly recommend
Dope af
I've been using these in a DNA75C at 20-25W and they work fine, Mooch warned not push them to 15A, best to consider them 10A CDR.
I chain vape a single coil at 12-15 watts and one of these cells typically lasts me all day
I vape at .8 at 23 watts and these last FOREVER
This battery has become one of my favorite batteries very quickly, but I want to try the NCR-A as soon as it's in stock. Great lifespan!
Great batteries for a good price
Great Battery! Does excactly what it's supposed to,!!
Good
Work fine.
great
Great batteries. I have this in my ijoy captain pd270 and it has a long life even at 120 watts.
These batteries are absolutely awesome, it took a while to charge them but they lasted forever in my iJoy Captain mod way longer than the iJoy 20700 batteries that came with.
Igetwhatiorderedquicklyandwithoutfuss.itstheolyplacewtoorderbatteries.
Tested these from 4.2 volts to 2.5 volts and got over 4150 MAH at 1 amp discharge. Going to use 6 of them for 12 volt heated clothing to give a little more capacity then 6 18650 cells. About 23% more capacity over the 3500 MAH 18650 cells.
Mooch advised these batteries are better suited to lower wattage vaping to maximize its performance.
Fastest service at the fairest prices for the best products that I have ever found!
Ordered 2 sets of batteries. 2X18650 and 2X20700 the price was very good and they shipped quickly. I was very satisfied with the purchase.
Fast, good service. Quality products.