NiMh 2500-AA Specification sheet

Supreme Power                                                              Document Title: Product Specifications of NiMh AA 2500
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1.  SCOPE
           This specification governs the performance of the following Nickel-Metal Hydride cylindrical cell and its stack-up battery
Model: AA2500
Cell Size: AAcusp(14.2/0.1x50.00/0.5)mm

NiMh 2500 mAh AA dimensions chartNiMh 2500 mAh Specification graph

2.  DATA OF STACK UP BATTERIES
          All data involve voltage and weight of stack-up batteries are equal to value of unit cell multiplied by number of  unit cell which consisted in stack-up batteries.
           Example: Stack-up batteries consisting of three unit cells
                            Nominal voltage of unit cell=1.2V
                             Nominal voltage of  stack-up batteries=1.2VX3=3.6V

3.   RATINGS
     
     

Description

Unit

1.2

Condition

Nominal Voltage

V/cell

2400

Unit cell or stack up batteries

Minimum Capacity

mAh

2500

Standard Charge/Discharge

Nominal Capacity

mAh

250 (0.1C)

Standard Charge/Discharge

Standard Charge

mAh/hour

14-16

T 1=20 20 5 C ( See Note 1)

Fast Charge

mAh/hour

500 (0.2C)

-A V=0-5mV/cell, Timer
Cutoff=120% nominal capacity
Temp.Cutoff=55 degrees C, dT/dt=0.8 degrees C/min

Trickle Charge

mAh

6 appox
(See note 2)

T1=20/ 5 degrees C

Standard discharge

mAh

(0.03C)-(0.05C)

T1= 20/5 degrees Humidity: Max 85 %

Discharge Cut-off
Voltage

V/cell

500 (0.02C)

 

Storage Temperature

C



-20-25
-20-35
-20-45
-20-55

State: 30% charge-Max -Humidity
With in 1 year
With in 6 months
With in 1 month
With in 1 week

Typical Weight

Gram

30.00

unit cell

    * To keep the best performance for those not used for long periods of time, we recommend to charge the cells/batteries at least 30% after discharge entirely in 6 months.

4.  PERFORMANCE
           Unless otherwise stated, tests should be done within 1 month of delivery under the following conditions
                        Ambient Temperature : 20/ 5 degrees C
                        Relative Humidity ; 65/205
     Note : Standard Charger/Discharge conditions:
                          Charge :             250 mAh (0.1C) x 14 hours
                          Discharge :        500 mAh (0.2C) to 1.0V/cell  

Test

Unit

Specification

Condition

Remarks

Capacity

mAh

+2400

Standard Charge/Discharge

up to 3 cycles are allowed

Open Circuit
Voltage (OCV)

V

+1.25

Within 1 hour after charge

 

Internal Impedence

M

-35

Upon fully charged (1kHz)

 

High Rate
Discharge (1 C)

Min

+ 51

Standard Charge, 1 hour rest before discharge by 1 C to 1.0V/cell

up to 3 cycles are allowed

Charge Retention

mAh

+ 1500 (60% )

Standard Charge, Storage: 28 days
Standard Discharge

T1=20/5 degrees C

IEC Cycle Life

Cycle

+500

IEC1951-2 (2003) 7.4.1.1

see Note 3

Leakage

 

No leakage nor deformation

Fully charged at ; 250 mA for 48 hours

 

Vibration
Resistance

 

Change of voltage should be less than 0.02V/cell,
Change of impedance should be less than 5 milli-ohm/cell

Fully charged at 0.1C for 14 hours, then leave for 24 hours,
check battery before/after vibration,
 amplitude 1.5 mm, vibration 3000 CPM, any direction for 60 minutes

 

Impact Resistance

 

Change of voltage should be less than 0.02V/cell,
Change of impedance should be less than 5 milli-ohm/cell

Charge the battery at 0.1 C for 14 hours,
 then leave for 24 hours,
check battery before/after dropped,
height 50 cm wooden board ( thickness 30mm) direction not specified,
 3 times

 


 5.  CONFIGURATION, DIMENSIONS AND APPEARANCE  
             Please refer to attached drawings  

6.  EXTERNAL APPEARANCE
             The cell/battery shall be free from cracks, scars, breakage, rust, discoloration, leakage or deformation

7. WARRANTY
             One year limited warranty against workmanship and material defects

8.  CAUTION
              (1) Reverse charging is not acceptable
              (2) Charge before use. The cells/batteries are delivered in un-chaged state
              (3) Do not charge/discharge with more than our specified current
              (4) Do not short circuit the cell/battery. Permanent damage to cell/batteries may result.
              (5) Do not incinerate or mutilate cell/batteries
              (6) Do not solder directly to cell/batteries
              (7) The expected life may be reduced if cell/batteries are subject to adverse conditions as:
                           extreme temperature, deep cycling, excessive overcharge/ over discharge
              (8) Store the cell/batteries in a cool dry place. Always discharge batteries before packing.
______________________________________________________________________________

       NOTES:
               
             (1) T1; Ambient Temperature
             (2) Approximate charge time from discharge state, for reference only
             ( IEC61951-2 (2003) 7.4.1.1 Cycle Life:
                               

Cycle No.

Charge

Rest

Discharge

1

0.1 C X 16 hours

NONE

0.25 C X 2 hours 20 minutes

2-48

0.25 C X 3 hr10 minutes

NONE

0.25 C X 2 hours 20 minutes

49

0.25 C X 3 hr10 minutes

NONE

0.25 C X to 1.0 V/cell

50

0.1 CX 16 hours

1-4 hours

0.2 C X to 1.0 V/cell

 

Cycle 1 to 50 shall be repeated until the discharge duration on any 50th cycle becomes less than 3 hours

 
NiMh 2500 AA Graph-A1

Nominal Capacity

     

2500 mAh

Nominal Voltage

     

1.2V

Charge Current

Standard

   

250 mA

 

Fast

   

500mA

Charge Time

Standard

   

14-16 hours

 

Fast

   

6 hours

Charge

Charge

Standard

 

0 degrees C -45 degrees C

 

Charge

Fast

 

10 degrees C -45 degrees C

Ambient Temperature

Discharge

Discharge

Discharge

-20 degrees C -55 degrees C

     

Storage

-20 degrees C -60 degrees C

Internal Impedence (m )
(After Charge)

     

-35

Weight

     

30.0 g

NiMh 2500 mAh charge rate chartNiMh 2500 mAh AA Discharge chartNiMh 2500 mAh AA capacity dis-charge chartCopy Right-All properties owned by  Supreme Technologies, Inc. and Penny R Stepro  2015

Supreme Power Product Warranty

LifeLight otoscope and ophthalmoscope batteries carry a full 24-month warranty. 
Batteries are dated on the month they are shipped and warranty is good for 24 months thereafter.

Supreme Power LifeLight batteries are not prorated on warranty for time of use.

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