18650 3.7V 3000mAh lithium-ion battery cell
A single 18650 cell, 3.7V and 3000mAh, for flashlights, drones and industrial equipment. Its parameter table is transcribed below from its own listing, and its values describe this cell, not a pack built from it.
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About this model
This cell's listing describes its chemistry in terms a buyer can use. The negative electrode is made from lithium compounds; lithium is highly reactive and much lighter than the hydrogen-absorbing metal alloy of a NiMH negative electrode, which the listing says leads to higher gravimetric energy densities for the Li-ion cell. Its discharge characteristics are low internal resistance and high flat voltage characteristics during strong current discharge, ensuring a wider application field, and its cycle life is long storage life with few limiting conditions, offering problem-free charging after long storage and permitting use in a wide range of applications. The listing adds that premium Li-ion batteries of this kind offer high energy density, long cycle life and safe, reliable performance, with custom packs and bulk orders at competitive wholesale prices.
The table's most useful rows for a cell buyer are the capacity, the currents and the size together. A 3000mAh capacity at 3.7V stores about 11.1 watt-hours; a 1.5A charging current and a 3A maximum continuous discharge current define a cell for moderate-drain devices — flashlights, drones and industrial equipment, as listed — rather than for high-drain power tools, which would need a higher discharge rating. The 800-cycle life, as listed, is longer than the 500-cycle figures on several pack listings on this site, which is normal: a single cell cycled gently outlasts a pack cycled hard, and the figures should not be compared without their conditions.
A bare cell is not a finished battery. It needs a holder, wiring and protection designed by the buyer, and its 4.2V maximum charge voltage and 2.75V discharge cut-off must be respected by the charger's and the device's electronics. A buyer who orders this cell should state whether cells or a finished pack are needed, because the answer changes the product, the price basis and the terms. The 18650 guide on this site explains the cell-to-pack step in general terms; this page supplies the exact cell figures to put into it.
Technical parameters — as listed
| Item | Specification |
|---|---|
| Rated capacity | 3000mAh |
| Nominal voltage | 3.7V |
| Max charge voltage | 4.2V |
| Discharge cut-off voltage | 2.75V |
| Charging current | 1.5A |
| Max. continuous discharging current | 3A |
| Cycle life | 800 times |
| Discharge rate | ≤2% |
| Dimensions (L x W x H) | High: 65.5±0.5mm Diameter: 18.4±0.5mm |
| Weight | 48g |
| Operating temperature | Charging: 0~45℃ / Discharging: -20~60℃ |
| Storage temperature | -10~45℃ |
| Humidity | 5% to 95% relative humidity |
| Certification | CE/RoHS/MSDS/UN38.3 |
| Main protection function | Overcharge, over discharge, over current, short circuit, etc. |
| Delivery period | 7-20 days, depending on stock and quantity |
| Warranty | One year |
How to read this table
Read the table as a specification for this listing alone. The rated capacity and nominal voltage describe the pack's energy class; the maximum charge voltage and discharge cut-off voltage describe the charger's and the device's voltage limits; the charging current and maximum continuous discharge current describe how fast the pack fills and how hard it can work; the cycle life describes the listing's stated durability; and the dimensions and weight describe the physical pack. No row in this table describes any other model, even one with a similar voltage or capacity.
Two rows deserve a direct question before ordering. The certificate row states what this listing claims, and the certificate set for the exact model should be confirmed in documents, since certificates are available upon request. The delivery and warranty rows state this listing's terms, and they should be confirmed for the exact order quantity, because terms stated for one listing do not transfer to another. A buyer who confirms those two rows in writing has removed the two most common sources of dispute in battery orders.
Confirm before you order
Send the device facts with your inquiry: device type, space, voltage, capacity, peak current, and this model description. Ask for the certificate set for this exact model, confirm the minimum order, price basis and lead time for this listing, and confirm payment and warranty terms before you pay. If the device's space, voltage or peak current differs from this listing, say so in the first line — the custom route, not a forced fit, is the honest next step.
Related pages
18650 range · 18650 basics · 48V pack · Drone use
How to place an inquiry, step by step
- Send the device facts. Tell us the device type, the available space (length, width and maximum thickness), the nominal voltage you need, the capacity or runtime you target, and the peak current if your device has motors, radios or heaters.
- Name the model or the chemistry. If a page on this site matches, quote its model description and listing details. If nothing matches, say so and describe the chemistry and voltage you need, so the conversation starts on the custom route.
- Confirm documents and terms in writing. Ask for the certificate set for that exact model, confirm the minimum order, the price basis and the lead time for that listing, and confirm payment and warranty terms before you pay. Terms stated for one model listing do not transfer to another model.
- Agree the sample step. Confirm whether the next step is a listed sample, an engineering sample for a custom design, or a small trial order, and what test you will run on arrival — fit in the enclosure, runtime, or peak-current behaviour.
Send all of this in one message through the contact page: device type, space, voltage, capacity, peak current, model description if you have one, and the documents you need. That is the whole inquiry — no separate form, no account, no extra step.
What to send us now
Send one message with your device type, the space the pack must fit, the voltage and capacity you need, the peak current if it matters, and the model description if a page on this site already matches. Add the documents you need — certificates are available upon request — and whether you need a listed model or a custom design. Use the contact page or write to [email protected], or call +86-755-25629920. A specific message like that is what turns a range of hundreds of models into a short, answerable question.