Datasheet

Rechargeable Button Cells
2.3 NIMH BUTTON CELL BATTERIES FOR BRIDGING,
HOT SWAP AND MEMORY PROTECTION APPLICATIONS
Typical Application
■
Mobile phones (GSM, PCN, GPRS, DECT,
cordless phones)
■
GPS-terminals/voice organizers
Typical requirement
■
Charging current: 0.03 CA continuous
■
Discharge current: 30–100 mA
1)
■
Bridging time: 5–15 min.
■
Operating temperature: 0 to +45°C
1)
Proper selection of battery capacity is required.
Typical Application
■
Handhelds
■
Notebooks
■
Hi-Fi Systems
■
Car stereo, etc.
Bridging Batteries
Bridging batteries from VARTA Microbattery are opti-
mised in small size and provide high power output for
bridging mobile computers e.g. during main battery
change. Bridging batteries temporary take over the
supply of DRAM and other chips in notebooks, PCs,
handhelds, calculators, etc. when the main battery is
replaced within a certain time frame specified by the
manufacturer.
MBU/RTC Batteries
These batteries are designed for memory backup
(MBU) and the support of RTC (Real Time Clock)
in various electronic applications. Button cell
batteries even in the charged state are suitable
for wave soldering (t
max.
= 10 sec., T
max.
= 265°C).
Mobile Computer Applications
Mobile computers need even more power. Frequent
changing of main batteries should be made easy and
convenient.
The VARTA HyRate “Hot
Swap” batteries maintain
the PC operational at high
power levels during
ex change of the main bat-
tery.
The VARTA HyRate
“Bridging” batteries maintain
the PC partially operational
at reduced power levels
during exchange of the
main battery or during some
periods of work interruption.
A single VARTA High Rate
Cell is used in handhelds to
maintain memory content
during battery change.