This document provides specifications for a 6F22 E-Block rechargeable nickel-metal hydride battery with a nominal voltage of 8.4V (9V) and maximum capacity of 220mAh. The battery has standard charging at 0.1C for 14 hours and quick charging at 0.2C for 6-6.5 hours. It can be discharged at rates from 0.2C to 2.0C and operates at temperatures from -20°C to 60°C for discharge and 0°C to 45°C for charge. Graphs show the battery's voltage over time for standard and quick charging and its capacity retention over 12 months of storage.

1. Cell Type: AL220
RECHARGEABLE NICKEL-METAL HYDRIDE BATTERY
Ready to use Specifications
Size 6F22 E-Block
Nominal voltage 8.4V (9V)
C/5 C/2
Capacity Maximum 220 200
W (mAh)
Typical 210 190
12.6
26.2 ± 0.5 mm
Width
1.031 ±0.02 inch
Thickness 16.5 ± 0.5 mm
T
0.649 ±0.02 inch
48.0 ±0.5 mm
Height
1.890 ±0.02 inch
Weight 35 ±2g
Approx. Internal impedance at 1000Hz 420 mΩ
at charged state.
Standard 0.1C x 14 Hrs
Charge
Start voltage
Quick: with control 0.2C x 6 ∼6.5 Hrs
7.0V
H
Rapid: with control 0.5C x 2∼2.2 Hrs
(-êV, 0 to 5mV/cell)
Standard 0.2C
Discharge
High Rate 2.0C
Standard 0°C to 45°C
Charge
Quick 10°C to 40°C
Ambient Discharge -20°C to 60°C
temperature -20°C to 40°C
Storage Less than three months
-20°C to 30°C
Less than one year
Typical Characteristics
Standard charge at various temperatures Quick charge at various temperatures
12,0 11,5
11,0
11,0 0°C 0°C
10,5
20°C 20°C
10,0
Voltage ( V )
10,0
Voltage ( V )
45°C 45°C
9,5
9,0
9,0
8,0 8,5
Charge Current : 0.5C
8,0
7,0 Charge Current : 0.1C
7,5
6,0 7,0
0 2 4 6 8 10 12 14 16 0 20 40 60 80 100 120 140 160 180
Charge Time ( Hrs ) Charge Time ( Min )
Self Discharge Comparison between the new AccuLoop and conventional NiMH rechargeable battery
Discharge ( at low rate )
11,0 240 new AccuLoop 220mAh, size 6F22
conventional, high quality NiMH 250mAh, size 6F22
210
10,0 Charge : 0.1C x 14 hrs at 20°
180
Voltage ( V )
Capacity [mAh]
9,0 150
120
8,0
90
0.2C 0.1C
7,0 60
30
6,0
0 2 4 6 8 10 12 14 16 0
0 1 2 3 4 5 6 7 8 9 10 11 12
Discharge Time ( Hrs ) Storage Time at room temperature [months]
Delivered capacity is dependent on the applied load, operating temperature and cut-off voltage. Data in this specification is subject to change without notice.
ACCU POWER R&D, Oct. 2009 Doc. No. 091012-01 V0910 Page 1