Panasonic Examples of characteristics
Charging Characteristics by Temperature (H-Type vs. Standard Ni-MH Cell) Cycle Life Characteristics (H-Type vs. Valve Regulated Lead-Acid Batteries)
12010080
60
40
200 Ni-MH 1008060
4020020 253035404550 55 60
------- HHR210AH (“H“ Type Ni-MH) –––––– HHR210A (Standard Ni-MH)
VRLA
Test condition
Capacity Ratio (%)(100% = Nominal Capacity) Charging Efficiency (%) Charge: 0.1lt x 15h
Rest: 3h
Discharge: 0.2lt to1.0 V at 25°C
Discharge capacity charged at 25°C is 100
Depth of Discharge 50% 0 100 300400500600800 900 1000 11001200 1300 1400 1500
Ambient Temperature During Charging (°C) Charge/Discharge Cycles
Cycle Life Characteristics (H-Type vs. Standard Ni-MH Cell)
1201008060
40
2000 200400600800 1000 1200 1400
------- HHR210AH (“H“ Type Ni-MH) –––––– HHR210A (Standard Ni-MH) Test condition (1) Capacity checkCharge: 0.1lt x 16h
Rest: 1h
Discharge: 0.2lt to1.0 V (2) Cycle testingCharge: 0.25lt x 3h10m
Rest: 0h Discharge: 0.25lt x 2h20m
Charging Efficiency (%) Cycles
Ni-MH High-Temperature Series Recommended Charge for back-up power applications
The optimal charge system for the Ni-MH ’’H’’ Series
for back-up power applications is an intermittent timer
charge. An intermittent timer charge improves charge
efficiency, extends battery life(-vs- trickle charge) and
reduces electricity consumption up to 30% compared
to *trickle charge.Intermittent Timer Charge: (see diagram) At the begin-ning of the charge, an IC timer is started and charging
is activated at a current of 0.1lt until the timer stops and
the charge is terminated. When the batteries self
discharge down to a set point (1.3V), the timer charge
is re-activated.*Trickle charge is not recommended for Ni-MHbatteries. Please consult Panasonic on any Ni-MH
applications requiring trickle charge.
Example of intermittent timer charger system:Average Charge Current: 0.1ltA
Re-charge Time: 16 hours
Pulse charging can be used Intermittent Charge
(Ambient Temp 20°C)
7 days 7 daysInitial charge Discharge Charge Discharge Charge Discharge(Self discharge)(Self discharge) (Self discharge) 0.1lt*16h 0.1lt*4h 0.1lt*4h
Capacity Current Voltage (mAh) (mA) (V)