The BLF Battery Data Base

[kreisler]

During the past days i did imax b6 measurements on my TF 14500 flames and posted them in the other thread:

@kreisler

So far i own 5 cells of these TF flames 14500 and my measurements are:

TF flames 14500	weight	max. length	capacity	source	hologram sticker
cell#0 (disposed)	unknown	unknown	unknown	DX	no
cell#1	20.708g [21g]	51.09mm (skew)	759mAh	DX	no
cell#2	20.696g [21g]	51.06mm	830mAh	DD (price version 3)	no
cell#3	20.465g [20g]	51.01mm (skew)	744mAh	DD (price version 3)	no
cell#4	[20g]	51.03mm (skew)	559mAh	DD (price version 2)	yes
cell#5	[20g]	51.00mm	786mAh	DD (price version 2)	yes

Note: weights in brackets are readings from 1g kitchen scale. in addition, cells #1-#3 were weighed with a 0.001g precision scale. capacity measurements taken by Genuine Imax B6, discharged from 4.200V (offline voltage, UT61E) down to "3.00V" (Imax B6 standard discharge program) at "-0.1A" discharge rate.

total weight (cell#1-#5) on kitchen scale: [102..103g], i.e. ~102.5g

average weight (cell#1-#5) on kitchen scale: (~102.5g/5=) 20.5g

average length is 51.0mm, if the PCB is perfectly aligned and not skew.

the variation of capacity between shipped samples, even within a 2pcs-set, is quite high. and it doesnt depend on the presence of the hologram sticker. from the above data, as a rule of thumb, you should expect around 750mAh min. capacity out of this cell product. Apparently cell#4 is a poor cell. Another discharge test resulting in 561mAh confirmed this observation.

hope this helpz!