TrustFire 18650 2400mAh: brief, but thorough.
$9.49
This will just be a test, but one carried out with a professional battery tester. And I liked the batteries themselves, so they’re worth writing about.
They arrived in unusual packaging, at least for me. Previously, they’d always come in plain envelopes, but this time there was a bag with a tag.
Inside, though, everything was as usual: the envelope was simply packed in a bag.
There’s bubble wrap inside, with the batteries in it.
There’s an odd sticker on the batteries themselves. Maybe it means something to someone, but I think it’s just the store’s internal label.
There are no holograms on the packaging, and the batteries themselves are rated at 2400 mAh.
The back has the usual warnings: don’t throw into a fire, don’t overcharge, don’t throw away, don’t eat, and so on.
The batteries have protection circuits. I tested the protection, and it cuts off :)
The batteries are a little longer than expected: 68 mm instead of 65.
The diameter is practically as expected, though I think everyone already knows these specs without my review, since these batteries are quite popular.
The pair weighs 94 grams, so each battery weighs 47 grams.
I weighed the batteries as a pair for a reason. For comparison, a pair of Bailong batteries—the ones often bundled with flashlights at our markets—weighs just 56 grams, or 28 grams each. As they say, feel the difference. I hope you have a rough idea of their capacity.
And now, as promised, the test results.
The test was performed with a professional battery analyzer, the VenconUBA, so I personally have no doubts about the accuracy of the results. And the device’s price kind of says it all :)
First battery.

Second battery

In short:
1 — Pass! Capacity=2.209 Ah (92.0% rated)
2 — Pass! Capacity=2.243 Ah (93.5% rated)
In my opinion, that's a very good result: 92–93.5% of the rated capacity. The tests were run at a 1C current, and if you're interested, all the results are above in the spoilers.
These batteries were provided free of charge by the chinabuye store for testing and review.
I think this information will be useful—or at least, I hope so :)
$9.49
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Questions and answers
What capacity did the TrustFire 18650 2400mAh batteries deliver?
At about 2.4 A, the first delivered 2209 mAh and the second 2243 mAh, or 92.0% and 93.5% of the stated 2400 mAh.
Do TrustFire 18650 batteries have protection?
Yes. They have protection circuits, and the author tested them and confirmed that they disconnect the batteries.
What are the dimensions and weight of the TrustFire 18650 batteries?
They are 68 mm long and weigh 47 g each. The author says the diameter is close to the expected size.
This model is included in the summary table: Battery comparison: measured capacity and resistance
The figures from this review are in the measurement database: Batteries
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