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Trustfire 10440 600mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (BP-TR10440) (as low as) $2.99!

Trustfire 10440 600mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (BP-TR10440)
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(Details)
Item #:TRUSTFIRE-AAA-10440-600
Product Review:
Regular Price:$8.95
Sale Price:$3.79 & Free Shipping
With Orders Over $50!
Quantity:
Availability:
Qty.Price
1 - 9$3.79 ea.
10 - 49$3.59 ea.
50 - 99$3.39 ea.
100+$2.99 ea.
WARNING: THIS BATTERY IS NOT MEANT TO BE A DIRECT REPLACEMENT FOR AAA ALKALINE/NIMH BATTERIES IN CONSUMER DEVICES. THESE LITHIUM ION BATTERIES OPERATE AT MORE THAN TWICE THE VOLTAGE OF AN ALKALINE BATTERY AND 3 TIMES THE VOLTAGE OF A NIMH CELL AND MAY DAMAGE OR DESTROY YOUR DEVICE.

TrustFire TR10440 600mAh** 3.7V AAA Lithium ion Battery with Protection Circuit
  • Model: TR10440(AAA)Lithium ion AAA Battery with Protection Circuit
  • Voltage: 3.7V
  • Capacity: 600mAh**
  • Weight: 9.5g
  • With integrated PCB Protection.
  • Over current protection current: 0.5A
  • Over current protection voltage: 0.2V
  • Over charging protection voltage: 4.25V +/- 25mV
  • Over discharging protection voltage: 2.5V +/- 50mV
  • Lithium Ion 10440 cylindrical rechargeable batteries.
  • Lighting or other device needing 3.7V power
  • Dimensions: 10.25mm x 46.25mm


NOTE: Dimensions larger than standard AAA battery. May not fit all devices and/or chargers. Does not fit UltraFire WF-138 charger.

NOTE: Use special caution when working with Li-ion cells, they are very sensitive to charging characteristics and may explode or burn if mishandled. Make sure the user has enough knowledge of Li-Ion rechargeable batteries in charging, discharging and assembly before use. Always charge in/on a fire-proof surface. Never leave charging batteries unattended. We are not responsible for damage if there is any modification of the batteries/chargers in any form or shape (including pack making). We are not responsible for any damage caused by misuse or mishandling of Li-Ion batteries and chargers. We only recommend using Lithium Ion rechargeable batteries with a control circuit (protection PCB) to assure safe charge, discharge, etc, use of lithium ion batteries without a protection circuit is potentially hazardous

** - Product shows '600mAh' on label, but the tested capacity is 350mAh
Trustfire 10440 600mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk (BP-TR10440)
$3.79
4 Stars based on 4 Review(s)
David Emond
Jamestown RI
5 Stars
I would recommend this item to a friend.

Small and Powerful
February 18, 2015
I bought this set of cells to modify a light I am working on. Charging is great and cells last a long time.
Pros:
Small Powerful
Cons:
None

Paul
Asheville NC USA
4 Stars
I would recommend this item to a friend.

Very Good Idea
February 18, 2015
I may design my next product to use this battery. The protection circuit works well, preventing discharge below 2.5 volts or so, which saves the battery. (Once a lithium ion cell is discharged completely it loses its capacity and goes way out of spec.) **HOWEVER**: I would rate this battery as 400 mAh, not at 600mAh as they claim. Maybe, if you discharge this thing at a 1 ma rate it would hold up for 600 hours, but I discharged it at a 400 ma rate, which is only 1.25 watt or so, a reasonable loading for real-world use. It gave me one hour at 400 ma. 400 mAh is very useful, no problem. I never believed 600 mAh anyway, the battery is too small to deliver such power. But it would be nice to see an honest, conservative specification that really meant something. This hypy specmanship makes me wonder about the quality I might expect within a batch of 1000 of these. (Note the battery is about 2mm longer than a standard AAAA. This means it will not always fit where an AAAA fits.)
Pros:
Safer and more reliable Li Ion battery because it has an integrated protection circuit. All Li Ion batteries should be made this way.
Cons:
Inflated power specification. It's really about 400 mAh, not 600 mAh. I tested 2 batteries, charging first with their small charger and also with an advanced Li Ion charger that follows the perfect 3 step charging process. Discharge via precision current source. i performed the test several times on both batteries. The results were consistent, which is GOOD. The ampacity was really 400 mAh, not 600 mAh.

Philip
SF Bay Area
2 Stars

longer than unprotected 10440s: doesn't work in any of my flashlights
December 27, 2014
I've been unable to use it because it is too long for any of my AAA flashlights (4 lights, different manufacturers). The specs are great on paper (capacity and protection), but it's useless to me.
Cons:
longer than AAA and than unprotected 10440.

Jon
Florida
4 Stars
I would recommend this item to a friend.

Finally a protected 10440
December 26, 2014
I bought these for some single AAA flashlights that I knew would handle the 3.7volts they put out, charged right up and work great.
Pros:
Protected from the usual woes of this particular chemistry. Cheap and so far good performance
Cons:
Slightly longer than unprotected 10440's so too long for a few of my lights with front twist,probably ok for clicks...



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