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Old 03-02-2012, 06:43 PM   #124
_cy_ OP
Beastly Adventurer
 
Joined: Sep 2011
Location: Tulsa, Oklahoma
Oddometer: 5,458
doing regenerative discharge testing with Cellpro Powerlab 8 V2
this means target battery that is normally charged becomes power source.
roles are reversed with total discharged amps measured.

sequence of detailed photos below, documents a discharge/charge cycle
20 AH rated LiFePO4 prismatic battery is charged to 99% before discharge starts.

8.5amp discharge rate measured ... about 1.5 AH so far
too bad having trouble with PC able to communicate with charger.
hopefully will have that issue resolved.

note volts measured by meter is under 8.5amp load



37 minutes, 4.367 amp hour discharged in regenerative discharge mode.



1hr 14min elapsed... 9.4 amp hour capacity discharged so far



1hr 35min .. 11.8 amp hour capacity measured



2h 9 minutes .. 16.22 amp hour capacity measured



2hr 24minutes .. discharged to 0% .... 64f degree... 18.29 amp hour total capacity discharged from 99%. rated at 20 AH actual.





battery recovering quickly



Charging back up at 1C = 20amps ... 13.18v after 2-3 minutes of charging



charged received 7.18 amp at 1C = 20amp charge rate ... 24minutes



49 minutes @ 20amp charge rate ... 16.26 amp hour charged into battery .. 80% full, charger goes into top off mode



1hr 15minutes ... 100% charged .. 19.57 amp hour delivered to battery ... Fin




_cy_ screwed with this post 03-03-2012 at 03:55 AM
_cy_ is offline   Reply With Quote