Datasheet
VARTA Microbattery is a leading firm in the field of batteries and provides professional support for customers with
engineered design-in applications worldwide. Quality, reliability, high performance and customer satisfaction are the
main reasons for our leading position in the market. VARTA Microbattery provides solutions to major OEM companies
for high-tech applications such as notebook/pda bridging function, memory backup and real-time clock in PCs/note-
books as well as power source for telecom devices, remote control devices, torches, domestic alarms, car alarms,
medical equipment, consumer electronics, solar applications and many more.
1. GENERAL INFORMATION
System highlights of NiMH Button Cells from
VARTA Microbattery:
■
Excellent high-rate discharge characteristics
(3 CA/5 CA). For short duration even higher currents
can be drained.
■
No memory effect
■
Long life – typical 500 full cycles
■
Good overcharge capability
■
Low self-discharge
■
Flat discharge voltage
■
Slim design
■
Wide temperature range
- Storage: -40°C up to +65°C/+85°C
- Discharge: -20°C up to +65°C/+85°C
- Charge: 0°C up to +65°C/+85°C
■
Good recovery characteristics after long storage period
and deep discharge
■
0% lead, 0% mercury and 0% cadmium
■
UL Recognition
■
ISO 9000 certified for design and manufacture of
rechargeable mass type cells and batteries. Conformity
to requirements of ISO 9001
■
VARTA Microbattery is a leader of NiMH Button Cell
technology and received several ecological and industry
awards.
Energy Density for Rechargeable Battery Systems
FIG. 1
Comparison of different rechargeable battery systems
Key Features – Benefits
■
Safety: built-in pressure vent guarantees safety in case
of mistreatment
■
Low self discharge: no handling, no charging – ready
to use after storage due to superior self discharge
performance
■
Cycle Life: extended product life time of more than
1000 cycles (IEC)
■
Overcharge capability: cost effective charging system
with no need for special components due to patented
GCE electrode
■
Deep discharge capability: longer lasting shelf-life with
high capacity retention after deep discharge
■
No leakage: direct mounting on PCB possible due to
patented crimp sealing system
page 2 | 3