The BLF Battery Data Base

hi, i use a cheap charger (ultrafire wf-188) and cant measure voltages, sorry. but i've got a high quality digital sliding caliper so here are my length measurements:

XTAR 18700 2600mAh (average size: L x D: 69.7 x 18.5 mm)

cell1 L x D: 69.59 x 18.48 mm

cell2 L x D: 69.67 x 18.43 mm

kreisler wrote:

and finally the capacities:

Discharge test runs in genuine Imax B6 at -0.2A discharge rate from 4.200+V (UT61E) down to the B6-standard "3.00V" termination limit:

test run #1 (tested: cell#1): 2501mAh, remaining resting voltage 3.281V recovered after 2 hours

test run #2 (tested: cell#2): 2515mAh, remaining resting voltage 3.390V recovered after 2 hours

Notes:

  • more test runs will be performed at higher discharge rates, e.g. -1.0A to collect more data which can be compared to the literature.
  • the test runs will be repeated in future to see how much the cells have aged

TrustFire 14500 900mAh (average size: L x D: 51.1 x 14.0 mm)

cell1 L x D: 51.13 x 13.98 mm

cell2 L x D: 50.98 x 14.01 mm

(in comparison, cheap AA Alkaline are 50.3 x 14.0 mm; this means that the flamed Protected TrustFire 14500's are 0.8mm longer than standard AA Alkaline.)