Batteries exactly as described, very well packaged and shipped promptly. Brought my DeWalt 6AH 20V battery pack back to life!
Key Features
- Long-Lasting Energy: 4250mAh capacity supports extended use between charges.
- Consistent Power Output: 15A continuous discharge for dependable performance.
- Efficient Charging: CC-CV charging method helps maintain battery health.
- Wide Temperature Operation: Designed to perform in a variety of environments.
- Compact and Powerful: High energy density in a space-efficient 20700 size.
Overview
The Sanyo NCR20700B is a high-capacity 20700 lithium-ion battery designed for applications that require reliable, long-lasting energy. With a typical capacity of 4250mAh and a steady 15A continuous discharge rating, this flat top, unprotected cell delivers dependable performance. Its efficient charging profile and durable design make it well suited for demanding power systems.
Applications / Uses
- Electric-powered equipment
- Power tools and battery systems
- Industrial electronics
- High-capacity battery packs
- Custom power solutions
Specifications
| Manufacturer | Sanyo |
| Model | NCR20700B |
| Cell Size | 20700 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 4250mAh (typical) |
| Continuous Discharge | 15A |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.5V |
| Protected | 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 or box.
- 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 use in devices such as e-cigarettes or vaporizers.
-
What is Thermal Runaway?
- A dangerous chain reaction where heat generated by a failing battery causes it to overheat further, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid physical damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases or boxes 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. These are signs of internal damage or instability, and continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger designed specifically for lithium-ion batteries and ensure that the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
- Prohibited Activities: Do not short circuit, modify, puncture, crush, expose to liquids, or solder directly onto the battery (spot weld only).
- Emergency Response: If a cell shows signs of thermal runaway (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 combustibles. Lithium-ion cell fires are Class B fires — use an ABC/dry-chemical extinguisher, or douse with large amounts of water to cool the cell and prevent spread. 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 for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
Disclaimer
IMR Batteries 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 product warnings and safety guidelines are effectively communicated to their customers. Some cells are sold in bulk packaging and are not individually packaged. Resellers must provide appropriate packaging for each individual cell sold and must not distribute cells loose, unprotected, or without a proper storage box or case.
Product compatibility is the sole responsibility of the customer. IMR Batteries does not guarantee compatibility with any specific device or application. We are not responsible for the design, assembly, performance, or safety of any battery pack constructed using our cells. It is the customer’s responsibility to ensure proper cell matching, protection circuitry, configuration, and safe construction practices. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Customer Reviews
Overall rating: 4.9 / 5 from 41 reviews.
Over 4000 mAh with a sizeable DC rate, nice.
Exactly as ordered and fast shipping
The product worked as expected and was packaged nicely.
Timely delivery and great price. Thanks!
I prefer the Homtech batteries but ya'll were out so these are my 2nd choice.
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.
Rated 15A. Mooch rated them 16A. Good battery if used within its limits. Long lasting and very reliable with 4000mah. If you vape and stay under the 16A, you have a batt that will last long and does the job. If you need a battery with higher limits of 30A, I suggest going with the Ijoys or Efest. I use the Ijoys and Efest in my VC XXX as they are rated 30A and hit harder on the mech mod. Note for the 30A, you give up 1000mah as the Efest and Ijoys are 3000mah. All 3 are great for regulated mods as long as you stay in the limits.
Good batteries for an unregulated parallel box mod. Last longer than any other 18650 cell I own. They don't even get warm after heavy use. That's sharing the amp load between the two. I would't use them in series, or a single cell mod due to low amp limit.
Great batterie life for series box also very nice wraps