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TrustFire TR 18650 2500mAh 3.7V Batteries (2-Pack)

Price: $8.87 free shipping Satisfaction Guaranteed - or your money back


SKU 6979
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- The voltage of full charge and cut-off discharge is 4.2V and 2.75V
- Don't heat, incinerate or reverse polarity
- Environment friendly

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(35 votes, submit rating)
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(uploaded by Predators) Side picture (uploaded by Predators) with and without spacer (uploaded by DMC137) Rebuilt Battery Pack

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Showing latest 4 entries. Click here to read all 24 reviews.

Displaying reviews posted by certified DX gadget owners first, followed by all other posted reviews.

Ownership verified by DX Good batteries for a good price
Posted by bjoern on 4/30/2009
Involvement: Expert (understands the inner workings) - Ownership: more than 1 month

Price: starstarstarstarstar
Ease of Use: starstarstarstarstar
Build Quality: starstarstarstarstar
Usefulness: starstarstarstarstar
Overall Rating: starstarstarstarstar

Pros: Cheap Li-Ion batteries, good quality,
true capacity 2420mAh @ 2,75V discharge voltage,
capable of high discharge currents.

Cons: None

Other Thoughts: Because they are unprotected, you must be careful not to overcharge or overdischarge them. I don´t think this is a con, because a protected version of this batteries is also available.

Bottomline: I used them to construct an external notebook battery, but they are also well suited for replacement of old notebook batteries. The connection of the several batteries is slightly difficult because you can´t solder them.

Ownership verified by DX Capacity test
Posted by jesasi on 2/25/2009
Involvement: General (knows how to use it) - Ownership: less than 1 day

Price: starstarstarstarstar
Ease of Use: starstarstarstarstar
Build Quality: starstarstarstarstar
Usefulness: starstarstarstarstar
Overall Rating: starstarstarstarstar

Pros: - Exact capasity (2496mAh)
- Can delivery 4.8A, without significantly droping voltage.

Cons: - none, so far.
500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit / v500 char limit / 500 char limit / 500 char limit / 500 char limit / 500 char limit

Other Thoughts:

Bottomline: - I did discharge cell to 2.75v at 0.1A.
- After that i did charge cell at 1.0A.
- At constant 4.8A discharge cell temp was about 44C.

Ownership verified by DX Good batteries
Posted by Andrea87 on 1/29/2009
Involvement: Expert (understands the inner workings) - Ownership: 1 day to 1 week

Price: starstarstarstarstar
Ease of Use: starstarstarstarstar
Build Quality: starstarstarstar
Usefulness: starstarstarstarstar
Overall Rating: starstarstarstarstar

Pros: Good price, they look pretty solid, good weigth. Charged to 4.18V, these last long in my WF-502B cree flashlight. Capacity should be something between 2000 and 2400mAh.

Cons: They're unprotected, but I bought these to be sure they'll enter in my flashlight, so there is no big problem.

Other Thoughts: Cheap high capacity cells. at a mere 3.2€ each, they're the cheapest way to power up a flashlight. 3 AAA's would cost more, and last less. Best power density for it's size.

Bottomline: If you need some good cells to power up your ultrafire flashlight, these are ok. Just don't discharge them too much since they arent't protected, and you'll get a good life from these. reccomended.

Ownership verified by DX Good price
Posted by snowlover91 on 12/26/2008
Involvement: General (knows how to use it) - Ownership: 1 week to 1 month

Price: starstarstarstarstar
Ease of Use: starstarstar
Build Quality: starstarstarstarstar
Usefulness: starstarstar
Overall Rating: starstarstarstar

Pros: Very good batteries for the price. Built well and work well in 2 of my lights that use 18650 batteries. They are $4.50 a battery which is good IMO.

Cons: A few here. First, these aren't protected but are unprotected batteries, so be careful when charging and using them so you don't over discharge or overcharge them. Secondly, they won't work in my Ultrafire C2 MC-E light since they aren't protected, you need to use a protected battery to make contact with the driver board of the MC-E light.

Other Thoughts:

Bottomline: Good unprotected batteries, however I bought them thinking they were protected but they were not. But a good value for the money.

Specifications Return to top    
Dimensions: 0 in x 0 in x 0 in
Weight: 3.25 oz
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