DealExtreme: Lithium Batteries 14500 3.7V 900mAh Rechargeable and Protected TrustFire (package with two) (TrustFire Protected 14500 3.7V 900mAh Rechargeable Lithium Batteries (2-Pack))

Today I will talk about the Lithium Batteries 14500 3.7V 900mAh Rechargeable and Protected TrustFire (package with two) (TrustFire Protected 14500 3.7V 900mAh Rechargeable Lithium Batteries (2-Pack)) that came in last package I received from DealExtreme. They are battery the size of a AA battery, but the similarity ends there, since these are lithium, such as cell, and capable of providing voltage and current greater than AA.

Batteries 14500 by TrustFire, Chinese manufacturer whose website I did not find, have a nominal voltage of 3.7 V. In my tests showed them between 4.1 V and 4.2 V unladen (nothing beyond multimeter connected), which is within the expected, since the nominal voltage of the battery is charged. The nominal capacity is 900mAh, but that I have no way to test, because my charger La Crosse BC-9009 is unique to AA and AAA batteries. Also remember that batteries 14500 tension is higher than AA, therefore not possible to directly compare their capabilities.

Baterias de lítio 14500 Trustfire: 3,7V, 900mAh recarregáveis e protegidas

Lithium Batteries 14500 Trustfire: 3,7In, 900mAh rechargeable and protected

These batteries 14500 TrustFire are protected from, This means that they have a small electronic component coupled to digital stops when the batteries are discharging at a voltage below a threshold, and thus prevent them from fully discharging and can no longer be recharged, and also interrupts the load when the batteries are at a voltage above a threshold, preventing them explode if the loader fails to detect that they are already loaded. Note here that say batteries 14500 can “explode” is not exaggerated, Lithium batteries can explode and really wreak havoc, because they release oxygen in the blast and burn everything that is around. The protection batteries becomes a little longer than normal, but this should not be a problem on most equipment.

Polo positivo das baterias 14500 da TrustFire

On the positive side of batteries 14500 by TrustFire

In the body of the battery have brand TrustFire, 900mAh capacity, and information that these batteries are high capacity, no memory effect, and a protection circuit with digital precision included. There is indication of positive and negative poles, at “Made in China” no singing, warnings that the battery should not be dismantled, exposed to fire or heat, or have a short-circuit caused. You should not install it with the poles reversed, or mix batteries with freshly charged batteries, do not immerse them in water. Ultimately, notices that everyone already knows or should know. Above the logo is the type of battery “TF 14500”, tension (3,7In) and technology “Li-Ion”, in other words, ions LITIO.

Polo negativo das baterias 14500 da TrustFire

Negative pole of the battery 14500 by TrustFire

The battery pack is only a durable plastic protecting the poles. A DealExtreme Additional uses tapes to join two of them and put the new seal with the product code. They came wrapped in bubble wrap, inside the envelope is also coated plastic bubble, and so they came well protected.

A embalagem consiste de um plástico resistente envolvendo a bateria e protegendo os polos

The packaging consists of a sturdy plastic surrounding the battery and protecting the poles

The fate of these batteries is feed LED Lanterna four stainless Aço Ultrafire C3 Cree Q5-WC, 5 modes, memory, 190 lumens, 1 AA pilha ou 14500 (Ultrafire C3 Stainless Steel Cree Q5-WC 5-Mode 190-Lumen Memory LED Flashlight (1*AA/1*14500)) also gained in DealExtreme, and which accepts either a single AA battery (easily found), as a single cell 14500 (for best performance). With the two charged batteries left a reservation in, in a Battery estojinho properly labeled with a warning that these batteries are 3,7 V not to be confused with AA and used in devices that accept only AA, since higher voltage could easily burn them. The other was for battery flashlight, that really made a big enough gloss, has been used in a range of 15 a 30 minutes, and therefore have not needed a recharge.

And I'm ending here, aguarde o review do Battery Charger UltraFire 3.6/3.7V (UltraFire 3.6/3.7V Battery Charger), which serves precisely to charge these batteries, in coming days. If you also want to shop in DealExtreme, directly from Hong Kong, click here and good shopping.

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Hello, congratulations on site, ótimos reviews. The dealextreme is a marvel! I received my first purchase there are 10 days; I taxed, but okay, was rookie, and pedi uns 50 items! Nevertheless , worth the price.

I'll take the second post a 4GB card and an ND filter for DSLR Camera; desalination vez, went right, hehe!

One question about these batteries, will be serving in a flash canon 550 ex? In manual flash I saw nothing about consumption / mAh. How to know if your device accepts these lithium batteries?

Thanks, hug!


GOOD AFTERNOON LIKE TO KNOW IF YOU HAVE 3.6 V Lithium Battery 14500. PRECO FOR Distribuição



Mario Oliveira

I wonder about how much lithium batteries a card with four, need special charger.
If it costs.

Thank you


Adriano Hortencio

Hello…I bought a flashlight brand TrustFire F20, when it said that the acquisition would accept AA batteries, but recommended the use of batteries TrustFire 14500, so I ended up buying 2 these lanterns…
The two worked perfectly with the AA, but wanted to buy the batteries so famous 14,500…the fact is that after I put the battery 14500 in one of the lanterns it worked perfectly, but thereafter never worked with AA battery, it actually gives no signal…already tested the battery and she is new…
Have not tried the battery on another flashlight, because they do not want the same to happen to her…
Thank you…
PS: If someone can explain to me thank oq may have happened already.

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good morning,

these batteries can be charged with charger standard? what happens if I try?


[…] DealExtreme: Lithium Batteries 14500 3.7V 900mAh Rechargeable and Protected TrustFire (package … […]


Can I replace a battery nimh 4,8 by v 14.500 LiPo, 3,7v?

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