Youtor
NOR TESTing a Panasonic CGR18650 CF Lithiumion Cell
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=a_dQty_NHF8
Discharge Capacity testing a 'Panasonic CGR18650 CG Lithium-ion' cell via LiitoKala Lii-500's NOR TEST mode of operation. • . • This is an old cell salvaged from a laptop battery pack. I would like to know what capacity will I get from this cell and then compare the result with info from its datasheet. • . • NOR TEST is used to measure Discharge Capacity of a cell. Choosing 'NOR TEST CURRENT 1000mA' will use ~1000mA charging current and ~478mA discharge current. • . • During NOR TESTing, the cell will go thru the following phases (steps): • 1) Initial charging phase • ● This is to ensure that the cell is fully-charged prior to discharging • ↓ • 2) Discharge phase • ● Will discharge cell from its full-charge voltage down to the cut-off voltage (~2.81V). At the end of this phase, show on screen a blinking 'End' word and the final record of Discharge Capacity (mAh) and Discharge Time (hr:min) • ↓ • 3) Late charging phase • ● Re-charges the cell from the cut-off voltage up to ~ 4.2Volts. This ends when the 'End' word stops blinking. • . • • • Quoting the Massachusetts Institute of Technology EV Team: • Capacity or Nominal Capacity (Ah for a specific C-rate) – The coulometric capacity, the total Amp-hours available when the battery is discharged at a certain discharge current (specified as a C-rate) from 100 percent state-of-charge to the cut-off voltage. • . • Capacity is calculated by multiplying the discharge current (in Amps) by the discharge time (in hours) and decreases with increasing C-rate. • Source: • http://web.mit.edu/evt/summary_batter...
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