Miboxer        
Results 1 to 5 of 5

Thread: Liitokala Fast and NOR tests

  1. #1
    xdayv's Avatar
    Join Date
    Aug 2014
    Location
    Philippines
    Posts
    1,304

    Default Liitokala Fast and NOR tests

    Haven't used Fast and NOR tests... what do these tests do? and how to use it? Thanks.
    Dave
    "two is one, one is none... three or more is fun."

  2. #2
    Flashaholic* Overclocker's Avatar
    Join Date
    Aug 2005
    Location
    Philippines
    Posts
    1,577

    Default Re: Liitokala Fast and NOR tests

    fast measures the amount of energy put into the cell. pretty much useless

    NOR does a full charge then measures the energy pulled out from the cell. but at a very low discharge current. not very useful either. not for any serious testing

  3. #3
    Flashaholic* MAD777's Avatar
    Join Date
    Jul 2015
    Location
    South Florida
    Posts
    3,622

    Default Re: Liitokala Fast and NOR tests

    I use the NOR test on my Liitokala 500 to compare capacity, so I can confirm that a group of batteries have equal capacity.

    I also want to match internal resistance, which the Liitokala can not do, although it gives the appearance.

  4. #4

    Default Re: Liitokala Fast and NOR tests

    Well, FAST dicharges the battery then charges and measures how much charge put in the battery, it is mostly useless especially for older batteries that convert much of the charge to heat. NOR charges, then discharges and measures how much got out of the battery, so it is more accurate as capacity measurement but not exactly spot on because it doesn't let the battery cool off first and dissipate any surface charge; still good for comparisons however. Discharge is performed at 250mA when the charge current is set to 300/500mAh and at 500mA discharge when charge is set to 700/1000mA.
    The mR measurement is not spot on but can give a rough idea if the battery develops high internal resistance. Most normal NiMH register exactly 45mR which make me believe this is a sort of fixed value when the charger detects a NiMH, eneloops on the other hand most of the time are 31-42mR which for me shows they are sufficiently better constructed than most NiMH around to the point this difference to be detectable by the charger. Li-ion start at about 20-30mR and as they age this goes up to 100+mR, I have two such Li-ions which can't go below 60mR but they are heavily used and old so no surprise here. This measurement is mostly affected by the cell temperature, you get the most accurate reading when the battery is cold.
    Last edited by apagogeas; 07-17-2017 at 08:27 AM.

  5. #5
    xdayv's Avatar
    Join Date
    Aug 2014
    Location
    Philippines
    Posts
    1,304

    Default Re: Liitokala Fast and NOR tests

    Thanks guys for chiming it.
    Dave
    "two is one, one is none... three or more is fun."

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •