18650 · 21700 · LiFePO4
Lithium cells with specs you can check
Name-brand cells from Molicel, Samsung, Panasonic, Sony/Murata and EVE. The ratings on this page are the manufacturers' own, with their test conditions. Shipped from Stockbridge, Georgia.
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- 4.9/5 from 27,047 reviews
- Most orders ship within 1 business day
- 1-800-547-3050
- Format
- 21700 · Li-ion
- Capacity
- 5000 mAh typ · 4850 min
- Continuous
- 60 A (80 °C cut-off)
- Nominal
- 3.6 V
Shop by size
Counts are products in stock right now.
Most chosen cells
Online-store best sellers by sales over the last 90 days (to 18 Oct 2026), in stock now. Cells with unconfirmed specs are left out.
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Molicel
P50B, Molicel 21700 P50B 5000mAh 60A Battery
21700 · 5000 mAh typ60 A continuous*
4.9 out of 5 · 78 reviews
$9.99 In stock
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Samsung
35E, Samsung 35E 18650 3500mAh 8A Battery
18650 · 3350 mAh min8 A continuous
4.8 out of 5 · 211 reviews
$5.99 In stock
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Molicel
P28A, Molicel P28A 18650 2800mAh 35A Battery
18650 · 2800 mAh typ35 A max†
4.9 out of 5 · 1,418 reviews
$5.99 In stock
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Molicel
P30B, Molicel P30B 18650 3000mAh 30A Battery
18650 · 3000 mAh typ30 A continuous*
4.9 out of 5 · 461 reviews
$6.99 In stock
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Samsung
25R, Samsung 25R 18650 2500mAh 20A Battery
18650 · 2500 mAh20 A continuous
4.9 out of 5 · 2,588 reviews
$4.99 In stock
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EVE
MB31 · pack of 4, EVE MB31 314Ah 3.2V LiFePO4 Battery (Grade A)(Pack of 4)
LiFePO4 · 314 Ah · 3.2 V0.5P continuous
4.9 out of 5 · 62 reviews
$299.00 In stock
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Samsung
30Q, Samsung 30Q 18650 3000mAh 15A Battery
18650 · 3000 mAh15 A continuous
4.9 out of 5 · 1,465 reviews
$6.99 In stock
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Panasonic
NCR18650GA, Panasonic NCR18650GA (Sanyo GA) 18650 3450mAh 10A Battery
18650 · 3450 mAh typ10 A continuous
4.8 out of 5 · 281 reviews
$6.99 In stock
* With the manufacturer's 80 °C cell-temperature cut-off. † Molicel states a 35 A maximum without calling it continuous. Ratings are the manufacturer's, from their datasheets.
How we state specs
Where each rating comes from, and how to check us.
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P30B · 30 A continuous (80 °C cut-off)
Ratings with their conditions
Discharge ratings on this page are the manufacturer's own: continuous unless marked † (a maximum the datasheet doesn't call continuous), with any temperature cut-off noted. Pulse figures are not used.
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Data sheets
Manufacturer data sheets
Sheets for many cells, including the Samsung 25R, 30Q, 35E and 50E and the Panasonic NCR18650GA (listed under Sanyo), to check a rating against its source.
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4.9 out of 5 from 27,047 reviews
Customer reviews
Collected from customers by Loox, our review app.
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18650BatteryStore
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Wholesale
Buying for a business?
Pack builders, OEMs, resellers and installers can apply for wholesale pricing, from under 500 cells to pallet and LTL orders, including resale and tax-exempt accounts.
Learn before you buy
Guide
18650 buying guide
Compares the Molicel P30B, Samsung 30Q, Sony/Murata VTC6, Panasonic GA and other cells by current, capacity and use.
Guide
18650 vs 21700
Capacity, sustained power and size compared, for e‑bikes, drones, power tools and flashlights.
Guide
How to spot fake 18650 cells
Red flags and checks, from can codes and weight to voltage, resistance and discharge tests.
Safety
Handling lithium‑ion cells safely
Charging and handling risks, and why bare cells belong in packs with protection circuitry.
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Rated 5 out of 5
Great battery
David B.Verified buyer
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Rated 5 out of 5
Very much convenient and at reasonable pricing.For the quality you receive
Ashley A.Verified buyer
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Rated 5 out of 5
very good!
Minh V.Verified buyer