Test / Review: UltraFire BRC32600 4000mAh 3.0V (Green-white)

4 posts / 0 new
Last post
HKJ
HKJ's picture
Offline
Last seen: 2 days 23 hours ago
Joined: 05/24/2011 - 12:23
Posts: 7448
Location: Copenhagen, Denmark
Test / Review: UltraFire BRC32600 4000mAh 3.0V (Green-white)

UltraFire BRC32600 4000mAh 3.0V (Green-white)

DSC_1047

Official specifications:

  • Voltage: 3.0V
  • Capacity: 4000mAh
  • No PCB protection board included


UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-info

This is LiFePO4 batteries, this means they are 3.2 volt nominal voltage. This voltage is to low for a typical 1xLiIon flashlight.

DSC_1045 DSC_1046

DSC_1048 DSC_1049

DSC_1050
DSC_1051
DSC_1052


UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-Capacity

The battery has a very flat discharge curve, where voltage depends on current draw, not on how much charge is left in the battery.

UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-CapacityTimeHours

UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-CapacityTime

UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-Energy

UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-PowerLoadTime

UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-TripCurrent

This type of battery does not have a protection circuit, because the chemistry is safer.

UltraFire%20BRC32600%204000mAh%203.0V%20(Green-white)-Charge



Conclusion

The performance is good for a cheap battery, but the capacity is overstated



Notes and links

How is the test done and how to read the charts
How is a protected LiIon battery constructed
More about button top and flat top batteries

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

Edited by: sb56637 on 08/26/2014 - 17:45
scaru
scaru's picture
Offline
Last seen: 4 years 12 months ago
Joined: 03/22/2012 - 13:36
Posts: 6946
Location: Virginia

Wow, I'm surprised it did so well at a 20 amp load. Thanks for the test HKJ!

Slim Pickens
Slim Pickens's picture
Offline
Last seen: 2 days 15 hours ago
Joined: 04/28/2012 - 19:50
Posts: 1229
Location: Lehigh Valley

The extremely flat voltage vs. time discharge curves really are impressive.

sb56637
sb56637's picture
Offline
Last seen: 7 hours 52 min ago
Joined: 01/08/2010 - 09:29
Posts: 7100
Location: The Light

Thanks very much! Frontpage’d and Sticky’d.

Budget Light Forum ...where Frugal meets with Flashlight!