Datasheet

www.varta-microbattery.com
VARTA Microbattery GmbH
Daimlerstraße 1
73479 Ellwangen / Germany
Tel. + 49 79 61 / 921 – 0
email: contact.varta-microbattery.com
www.varta-microbattery.com
Rechargeable Nickel-Metal-Hydride
Button Cells
55615 702 012 2 / V 150 H PC TP
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PROPER USE AND HANDLING
Charging
Extended charging outside specified temperature ranges may have an adverse effect on cell life. Also permanent charging
exceeding the limits of specified temperature ranges may reduce the battery life. The maximum life is achieved,
when charging at an average temperature of +20 to +30˚C.
Discharging
The specified temperature range is from -20 to +60˚C on discharge. Repeated discharge at the extreme temperatures may
affect battery life. In all application do not deep-discharge (< 0.6 V / cell) our Ni-MH cells and batteries.
Life Expectancy in Long-term use
Batteries are chemical products involving chemical reactions. Hence capacity and voltage will decrease over long time use as
well as during long-term storage capacity and voltage will drop. Typically, a battery will last 5 years or 1000 IEC cycles, if
used under recommended conditions and not overdischarged or overcharged. However, non-observance of recommended
conditions concerning storage, charging, discharging, temperature and other factors during use can lead to shortened life
expectancy of products and deterioration of performance.
Severe use applications
Short term use of Ni-MH batteries outside specified ranges maybe possible. Please consult us, if such a requirement exists.
SAFETY GUIDELINES
 Keep out the reach of children. If
swallowed, contact a physician at once
 Do not incinerate or mutilate, may burst
or release toxic materials
 Do not short circuit, may cause burns
 Do not deep-discharge into reserve
 Do not solder on the battery directly (use
our tagged versions)
 Restrict charging current and time to
the recommended value
 Observe charging temperature:
0 to +65˚C / +85˚C
 Battery compartment should provide
sufficient space for battery to expand in a
case of abuse
 Either battery compartment or battery
connector should have a design that
makes it impossible to place the battery in
reverse polarity
 Equipment intended for use by children
should have tamper-proof battery
compartment
 Battery of different electrochemical
system, grades, or brands should not be
mixed
 Battery disposal method should be in
accordance with local and state
regulations
 Please refer to our material safety
datasheets as supporting documents
DESIGN INFORMATION
 Discharge over temperature at 0.2CA Discharge at various loads
 charge characteristic 0.03, 0.1, 0.3 CA Overcharge
All data are related to cell characteristics.
NiMH-Button cell V150H. Trickle charge at 40°C
(trickle charge at 0.03 CA, N.C. = 140 mAh)
0
20
40
60
80
100
120
140
160
180
0 5 10 15 20 25 30 35 40 45 50
Trickle charge time (month)
0.2 CA capacity (mAh)
84 mAh (60% of N.C.)