If your mod takes 20700s, you already know the pickings are slim. Samsung, Sony, and LG never made this size. Most of what you see online is rewrapped mystery meat with specs printed by the marketing department, not the engineering one. The cells that are available from legit manufacturers, though? They are excellent.
We built this guide around Battery Mooch’s independent bench test data, cross-referenced with manufacturer datasheets and verified retail specs. Every battery here has been tested under continuous discharge, and every CDR rating reflects what the cell can actually deliver — not what the wrapper says.
Two hard rules for 20700s: no 20700 has a true CDR above 30A, and any cell claiming 40A+ is either lying or quoting a pulse rating. If a battery advertises specs that seem too good to be true, they probably are.
Quick Comparison: Top 20700 Batteries for Vaping
| Battery | Capacity (Typical) | CDR (Vaping) | Best For | Price Range |
|---|---|---|---|---|
| Sanyo NCR2070C | 3620mAh | 30A | Best overall / max runtime | $10–$12 |
| Sanyo NCR20700A | 3300mAh | 30A | Best available / daily driver | $7–$9 |
| Molicel INR20700A | 3000mAh | 30A | Best for high-wattage vaping | $8–$10 |
| Vapcell Gold 20700 | 3100mAh | 30A | Alternative to Sanyo (verified rewrap) | $9–$11 |
1. Sanyo NCR2070C — Best 20700 Battery Overall 2026
The Sanyo NCR2070C runs the 20700 format. Mooch’s retest confirmed it hits harder and runs longer than the NCR20700A at both high and low current levels — not by a little, either. With 3620mAh of typical capacity and a confirmed 30A CDR, it gives you more runtime than any other 20700 while still delivering the amperage that high-wattage vaping demands.
The catch? Finding one. Sanyo (now under Panasonic) produces these in limited runs, and they disappear from shelves fast. If you see them in stock, grab them.
| Spec | Detail |
|---|---|
| Capacity | 3500mAh (minimum) / 3620mAh (typical) |
| CDR (Vaping) | 30A |
| Nominal Voltage | 3.6V |
| Charge Voltage | 4.2V |
| Standard Charge Current | 2.45A |
| Weight | 62g |
| Internal Resistance (AC) | 10mΩ |
| Chemistry | NCR (Li-Ni-based cathode) |
| Manufacturer | Sanyo/Panasonic (Japan) |
| Style | Flat top, unprotected |
Best wattage range: Up to ~90W per cell (regulated mod). In a dual-battery setup, you are good up to about 180W.
Why it wins: The NCR2070C runs about 5°C warmer than the NCR20700A at the same current. No big deal. The extra 300–400mAh of actual delivered capacity more than makes up for it. You will charge your mod less often, and that is worth a slight temperature bump.
2. Sanyo NCR20700A — Best Available 20700 Battery 2026
If the NCR2070C is impossible to find, the NCR20700A is your everyday go-to. Same 30A CDR, slightly less capacity at 3300mAh typical, but it is far more consistently available and usually a couple of dollars cheaper.
Mooch tested this cell and rated it at a cool-running 30A with 3100mAh (rated) — and it delivers. It hits as hard as the Sony VTC5A at the start of discharge, holds voltage higher for longer, and runs about 20% longer than the VTC6 at 20A. Not bad for a format most manufacturers have walked away from.
| Spec | Detail |
|---|---|
| Capacity | 3100mAh (rated) / 3150mAh (minimum) / 3300mAh (typical) |
| CDR (Vaping) | 30A |
| Nominal Voltage | 3.6V |
| Charge Voltage | 4.2V |
| Standard Charge Current | 2.2A |
| Weight | 60g |
| Chemistry | NCR (Li-Ni-based cathode) |
| Manufacturer | Sanyo/Panasonic (Japan) |
| Style | Flat top, unprotected |
Best wattage range: Up to ~90W per cell. Same practical range as the NCR2070C, just slightly shorter runtime.
Why we picked it: It is the most reliable 20700 to find in stock. The specs are honest, the cell is an original (not a rewrap), and it has been tested for years by the vaping community without issues. Want a 20700 you can order today and trust tomorrow? This is the one.
3. Molicel INR20700A — Best 20700 Battery for High-Wattage Vaping
The Molicel INR20700A is the performance pick. Mooch rated it at 30A continuous with a temperature-limited rating of 35A, but that 35A number on the datasheet is not a true CDR. Running this cell at 35A continuous gets it too hot for safe, sustained use. Stick to 30A.
Where the Molicel shines is in voltage sag. At high discharge rates, it holds its voltage better than the Sanyos in the early part of the cycle. If you are running a single-battery mod at 80–90W and want the hardest hit possible, the INR20700A delivers that little extra punch. The trade-off is capacity: 3000mAh typical versus 3300–3620mAh for the Sanyos.
| Spec | Detail |
|---|---|
| Capacity | 2800mAh (minimum) / 3000mAh (typical) |
| CDR (Vaping) | 30A |
| Max Discharge (Datasheet) | 35A (temperature-limited, not true CDR) |
| Nominal Voltage | 3.6V |
| Charge Voltage | 4.2V |
| Standard Charge Current | 3.0A |
| Weight | 60g |
| Internal Resistance (AC) | 20mΩ (max) |
| Chemistry | INR (Li-NMC) |
| Manufacturer | E-One Moli Energy (Taiwan) |
| Style | Flat top, unprotected |
| Certifications | UN38.3, UL1642, IEC 62133 |
Best wattage range: Up to ~90W per cell. Best for vapers who prioritize hit quality over battery life.
The rewrap warning: The Molicel INR20700A is famous for its distinctive five-leg positive contact, and it gets rewrapped by more companies than any other 20700. If you buy one, make sure you are getting it from an authorized Molicel distributor. The five-leg top is a quick visual check for authenticity.
4. Vapcell Gold 20700 — Verified Rewrap Alternative
The Vapcell Gold 20700 is a rewrapped Sanyo NCR20700A. Mooch confirmed this in his testing — the performance matches exactly, and both the 30A CDR and 3100mAh capacity ratings are accurate. It beats the Sony VTC5A and the five-leg Molicel INR20700A in head-to-head discharge testing.
So why rank it below the Sanyo original? Availability and price. You are paying a premium for a different-colored wrapper on the same cell. If the Sanyo NCR20700A is out of stock and the Vapcell is available, it is a perfectly safe alternative. Just know what you are getting.
| Spec | Detail |
|---|---|
| Capacity | 3100mAh |
| CDR (Vaping) | 30A |
| Nominal Voltage | 3.7V |
| Chemistry | INR |
| Style | Flat top, unprotected |
| Underlying Cell | Sanyo NCR20700A (Mooch confirmed) |
Best wattage range: Same as Sanyo NCR20700A — up to ~90W per cell.
What About the Golisi S32 and iJoy 20700?
You will see these two around. A word of caution.
Golisi S32: The official specs claim 3200mAh and 30A, but some retailers list it at 3750mAh and 40A — numbers that are physically impossible for a 20700 cell at 30A CDR. Golisi is not an original cell manufacturer. They rewrap cells from other producers, and the inconsistent specs across retailers are a red flag. We cannot verify which underlying cell you would actually receive. Proceed with caution.
iJoy 40A 20700: Mooch tested the original version and rated it at 30A / 3000mAh (the 40A claim was inflated). Then iJoy quietly changed the internal cell without updating the wrapper — same label, different battery. The new version tested at only 15–20A with 2800mAh and heavy voltage sag. You can identify the old (better) version by its five-prong positive contact; the newer one has four prongs. Given the inconsistency, we cannot recommend this battery.
20700 vs 21700 vs 18650: Which Size Should You Use?
Here is the honest truth: the 20700 format is in a weird spot. It launched in 2017 with a lot of promise, but most mods that accept 20700s can also fit 21700s — and 21700s offer better performance across the board.
| Format | Diameter | Length | Best CDR Available | Best Capacity Available |
|---|---|---|---|---|
| 18650 | 18mm | 65mm | 30A (Molicel P26A) | 3500mAh (Samsung 35E) |
| 20700 | 20mm | 70mm | 30A (Sanyo/Molicel) | 3620mAh (Sanyo NCR2070C) |
| 21700 | 21mm | 70mm | 35A (Samsung 30T) | 5000mAh (Samsung 50S) |
The 21700 gives you more options, more capacity, and higher CDRs from top-tier manufacturers like Samsung and Molicel. If your mod supports both sizes, check out our Best 21700 Batteries for Vaping guide. If you are stuck with 18650s, we have you covered there too: Best 18650 Batteries for Vaping.
But if your mod only takes 20700s, the Sanyo and Molicel cells on this list are great performers. They are not consolation prizes. They are excellent batteries in a size that just happens to be less popular.
CDR vs. Max Discharge: Know the Difference
CDR (Continuous Discharge Rating) is the current a battery can deliver non-stop without overheating or sustaining damage. This is the number you use when deciding if a battery is safe for your setup.
Maximum discharge is the peak current a battery can deliver in short bursts. Some manufacturers print this on the wrapper instead of the CDR to make the battery look more powerful. The Molicel INR20700A datasheet says 35A, but running it at 35A continuous pushes the cell past safe temperature limits. For vaping safety calculations, always use the CDR — 30A in this case.
Simple wattage rule: Watts = CDR × 3.2V (approximate battery voltage under load). So a 30A battery in a single-cell mod can safely handle about 96W. In a dual-battery mod, that doubles to roughly 192W.
How to Choose the Right 20700 Battery
For most vapers (40–90W per cell): Get the Sanyo NCR20700A. It is the easiest to find, honestly rated, and delivers enough power and runtime for the vast majority of setups. If you see the NCR2070C in stock, grab that instead for the extra capacity.
For high-wattage vapers (80–90W+ per cell): The Molicel INR20700A has slightly less voltage sag at high currents, giving you a harder hit. Just accept the shorter battery life.
If the Sanyo is out of stock: The Vapcell Gold 20700 is a confirmed Sanyo NCR20700A rewrap with accurate ratings. It costs a bit more, but the performance is identical.
Battery Safety Basics
Every battery on this list is an unprotected flat-top cell designed for use in battery packs with proper protection circuitry. Using them in vaping devices requires understanding a few fundamentals:
- Never exceed the CDR. Calculate your maximum current draw and stay within limits. For regulated mods, divide your wattage setting by the number of batteries, then divide by 3.2V.
- Use a dedicated charger. Charging batteries in-mod is convenient, but a quality external charger (Xtar, Nitecore) is safer and extends cell life.
- Inspect wraps regularly. A torn battery wrap can cause a hard short. Replace damaged wraps immediately — it takes two minutes and costs almost nothing.
- Do not mix and match. Always use paired cells from the same manufacturer, same model, same age, and same charge level in multi-battery mods.
- Store properly. Keep batteries at 3.6–3.8V (approximately 50% charge) for long-term storage. Never store fully charged or fully depleted.
- Buy from authorized dealers. IMR Batteries, Liion Wholesale, and 18650 Battery Store are consistently reliable. Counterfeit batteries are a real danger.
FAQ
Are 20700 batteries being phased out?
They are not exactly being phased out, but the market is shrinking. Most manufacturers have moved on to the 21700 format, which offers better performance. Sanyo/Panasonic and Molicel are the only original manufacturers still producing 20700s for the vape market. As existing stock sells through, finding them will only get harder.
Can I use a 21700 battery in a 20700 mod?
Most 20700-compatible mods can fit 21700s because the diameter difference is only 1mm. Check your mod’s specifications to confirm. If it fits, you will generally get better performance from a 21700. See our 21700 battery guide for recommendations.
Can I use an 18650 battery with an adapter in a 20700 mod?
Yes, sleeve adapters exist that let you run 18650s in 20700/21700 slots. This gives you access to a wider selection of batteries, including the Molicel P28A and Samsung 30T. The trade-off is reduced capacity and runtime compared to a proper 20700.
What is the highest CDR available in a 20700?
30A. No 20700 cell has a true continuous discharge rating above 30A as confirmed by independent testing. Any battery claiming 35A, 40A, or higher is quoting a pulse or temperature-limited rating, not a CDR you can safely use for sustained vaping.
How long do 20700 batteries last?
Most quality 20700 cells are rated for 300–500 charge cycles before capacity drops to 60–80% of original. In practical terms, that is roughly 1–2 years of daily use. Replace any battery that shows significant capacity loss, gets unusually hot during normal use, or has damaged wrapping.
Why are some 20700 batteries so cheap?
If a 20700 is priced well below $7, it is likely a rewrapped cell from an unknown manufacturer with inflated specs. The batteries recommended in this guide are all from original manufacturers (or verified rewraps) with independently tested ratings. Saving a couple bucks on a battery is not worth the safety risk.
All CDR ratings in this guide are based on Battery Mooch’s independent bench testing and represent true continuous discharge ratings safe for vaping. Specifications were verified against manufacturer datasheets as of May 2026. Prices are approximate and vary by retailer.
Related Articles
- 18650 vs 21700 vs 20700 Batteries Which Size is Best For Vaping
- Best 18650 Batteries For Vaping
- Best 21700 Batteries For Vaping
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