Astrolux E1825 18650 (2500mAh)
(17 reviews)
Two high-drain 18650 cells: the Astrolux E1825 deliver 2500 mAh and up to 18 A, ideal for powerful flashlights and vaping.
Characteristics
- Capacity: 2500 mAh (per cell)
- Discharge: 18 A continuous (high drain)
- Format: 18650, button top, unprotected
- Pack: Sold in twos
- 18 A high drain for flashlights and vaping
Detailed overview: Astrolux E1825 18650 2500mAh high-drain cells (2-pack)
The Astrolux E1825 are rechargeable 18650 cells designed for high drain. Each cell offers 2500 mAh at 3.7 V and accepts a continuous discharge current of up to 18 A, which makes them suited to current-hungry devices: powerful flashlights, rebuildable vaping gear, RC toys, drones, tools or DIY battery packs.
Unlike very high-capacity cells (3400 to 3500 mAh) with low drain, the E1825 favors output: it holds its voltage under heavy load, where an unsuited cell would sag and cut the device. This is the compromise sought by high-output flashlight enthusiasts, who need high current rather than maximum runtime.
These cells are unprotected and fitted with a button top, an important point: the button top improves compatibility with devices that will not accept flat tops, but the lack of a protection circuit means they must be used in devices that handle discharge cut-off themselves, and charged on a smart charger that monitors voltage. Handled with care, they are reliable and durable.
Sold in a two-pack, the E1825 are an economical way to renew or expand a set of high-drain 18650 cells, compatible with flashlights from Astrolux, Nitecore, Lumintop, Fenix or Olight. Good value for experienced users.
Comparison
At around 16 for the two-pack, the Astrolux E1825 compete with benchmark high-drain 18650 cells, through searches like "best high-drain 18650 flashlight" or "Astrolux E1825 vs Samsung 25R". Here is how they stack up against three alternatives: the Samsung INR18650-25R, the Sony/Murata VTC5 and the Molicel P26A.
| Criterion | Astrolux E1825 | Samsung 25R | Sony VTC5 | Molicel P26A |
|---|---|---|---|---|
| Capacity | 2500 mAh | 2500 mAh | 2600 mAh | 2600 mAh |
| Continuous discharge | 18 A | 20 A | 20 A | 25 A |
| Terminal type | Button top | Flat top | Flat top | Flat top |
| Price (per cell) | ≈ 8 | ≈ 7 | ≈ 9 | ≈ 8 |
In short, the Astrolux E1825 positions itself as an economical alternative to the big names in high-drain cells. Its 2500 mAh capacity and 18 A discharge put it on par with a Samsung 25R, the reference of the genre, with the bonus of a button top for compatibility. The Sony VTC5 and especially the Molicel P26A push the current a little further, but often cost more. To equip powerful flashlights or demanding gear without breaking the bank, the E1825 two-pack is a sensible choice, reserved for experienced users given the lack of protection.
Our tester's review: Pierre Freysinger
The Astrolux E1825 are unpretentious but effective and affordable high-drain 18650 cells. Their appeal: 18 A continuous current for 2500 mAh, a classic, well-calibrated compromise for powerful flashlights and rebuildable vaping, where a high-capacity but low-drain cell would sag. In our use, they hold their current claims, with real capacity close to the rating, honest for the price. The button top improves compatibility with devices that will not take flat tops. Two points to watch, common to this type of cell: they are unprotected, so reserved for devices that handle cut-off themselves, and must be charged on a dedicated charger that monitors voltage. To renew a set of 18650 cells without breaking the bank, the two-pack is a good deal.
Frequently asked questions: Astrolux E1825 18650 2500mAh high-drain cells (2-pack)
No, these are unprotected cells (no built-in protection circuit). They must be used in devices that handle discharge cut-off and charged on a smart charger that monitors voltage.
It lets the cell deliver a high current without voltage sag, essential for very powerful flashlights, rebuildable vaping or RC toys, where a conventional cell would collapse.
Yes. The button-top positive terminal improves compatibility with devices and flashlights that will not accept flat-top cells. Still, check the dimensions your device accepts.
They are rated at 2500 mAh per cell, a consistent value for a discharge-optimized 18650. In everyday use, the measured capacity stays close to the rating, a good compromise for the price.
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Published on 19/07/2026