NICKEL METAL HYDRIDE HANDBOOK AUGUST 2005
NICKEL METAL HYDRIDE BATTERIES: INDIVIDUAL DATA SHEET
Thisinformationisgenerallydescriptiveonlyandisnotintendedtomakeorimplyanyrepresentation,guaranteeorwarrantywithrespecttoanycellsandbatteries.Cellandbatterydesigns/specificationsaresubjectto
modificationwithoutnotice.ContactPanasonicforthelatestinformation.
Typical Discharge Characteristics
Typical Charge Characteristics
HHR300CHCylindrical C size (HR 26/50) for backup use
Dimensions (with Tube) (mm)
Specifications
1After charging at 0.1It for 16 hours, discharging at 0.2It.
2For reference only.
3Need specially designed control system
Control System:
dT/dt cut-off; 1 to 2°C/min
-UV cut-off; -UV per cell = 5 to 10 mV
T-control;T=65°C
Rapid charger timer; 2.4h (at 1.25a)
Trickle timer; within 2h
4With control system
Battery performance and cycle life are strongly affected by how they are used. In
order to maximize battery safety, please consult Panasonic when determining
charge / discharge specs, warning label contents and unit design.
(+)
( )
50.0+
-
0
1.
25.8+
-
0
1
0246810203040506
2.0
1.8
1.6
1.4
1.2
1.0
0.8
Voltage (V)
Charge Time (hours)
Charge: 300mA(0.1 It) x 16hrs.
10˚C
25˚C
60˚C
-20 -10 0 10 20 30 40 50 60 7
Capacity Ratio (%)
Temperature (°C)
120
110
100
90
80
70
60
50
40
30
Charge: 300mA (0.1 It) x 16 hrs.
Charge Temperature: -10 to 60˚C
Discharge: 600mA (0.2 It)
Cut-off Voltage: 1.0V
Discharge Temperature: 25˚C
0 5 10 15 20 25 3
Voltage (V)
Discharge Time (minutes)
Charge: 300mA(0.1It) x 16 hrs., 25°C
Discharge: 10A, 20A, 25°C
10A
20A
1.8
1.6
1.4
1.2
1.0
0.8
Note: [It] was previously expressed as [C]. [It] is an IEC standard expression
for the amount of charge or discharge current and is expressed as:
It(A) = Cn (Ah)/1h.
• [It] is the reference test current in ampres
• [Cn] is the rated capacity of the cell or battery in Ampere-hours.
n = the time base [hours] for which the rated capacity is declared
NominalVoltage 1.2V
Discharge
Capacity
1
Average
2
Rated (Min.)
3300 mAh
3100 mAh
5mΩ
300mA (0.1It) x 16hrs.
1500mA (1It) x 2.4 hrs.
4
155mA x 32 hrs.
100mA x 48 hrs.
Approx. Internal impedance
at 1000Hz at charged state.
Charge
Charge
Discharge
Storage
Standard
Rapid
3
Low Rate
Standard
Rapid
Low Rate
Ambient
Temperature
˚C˚F
0˚C to 45˚C
10˚C to 40˚C
-10˚C to 45˚C
-10˚C to 65˚C
-20˚C to 35˚C
-20˚C to 35˚C
-20˚C to 55˚C
32˚F to 113˚F
32˚F to 104˚F
14˚F to 149˚F
14˚F to 113˚F
-4˚F to 95˚F
-4˚F to 95˚F
-4˚F to 131˚F
< 1 year
< 3 months
< 1 month
Diameter
Height
Approximate
Weight
mm
Grams Ounces
25.8+0/-1.0
50.0+0/-1.5
inch
1.02+0/-0.04
1.97+0/-0.06
80 2.82
