By Neil Oliver, Technical Marketing Manager,
An object compared to a sugar cube is fairly
easy to visualize. Similarly, if the reference
was to a quarter or dime, the object’s dimensions are apparent. However, if the item
described was compared to an 1ICP-063450-
2 lithium-ion smart battery, undoubtedly, that
would leave most puzzled.
This very debate recently took place at the
headquarters of Accutronics ( www.accutronics.
co.uk), a UK designer and manufacturer of
professional battery solutions. The design team
wanted to brand their newest battery range by
giving it a descriptive nickname that would tell
everyone its approximate size. They came up
with the phrase “credit card battery.”
Credit card batteries were developed in re-
sponse to OEM demand for a short lead time,
compact, and rechargeable lithium-ion battery
solution for their devices.
When planning to build an off-the-shelf
battery, manufacturers need to consider a few
key points. Quality, availability, and the level
of customization that might be required by
the end user should all be addressed.
Many OEM designers want to be able to
integrate a battery that suits their application
without going through the time and expense
of developing a new energy solution for
every product. However, finding a product
that meets their quality expectations and that
comes with the right level of functionality and
regulatory compliance is no easy feat.
It was to meet this demand that the range
of credit card batteries was born. The series
has been designed as a standard, readily avail-
able product that lends itself to customization
in a timely and cost effective manner. The
credit card-sized batteries are pre-engineered,
tooled, and have regulatory certification as a
standard before they reach the end user.
The rationale for developing the new
range of smart batteries came from the fact
that electronic device OEMs in professional
markets find it difficult to access smaller, high
quality, rechargeable lithium ion battery packs
for their portable devices. This might seem
surprising, given the success of lithium ion
batteries in consumer electronic devices.
However, the requirements of OEMs in
professional markets are very different, and
there is often a disconnect between managing
expectations and what the battery industry is
willing or able to provide.
For instance, the lifecycle of an average
consumer battery is 18 months. In contrast,
specialist OEM devices have a lifespan of
15 or more years, which makes the risk of
obsolescence very high. This means that
embedding a consumer battery is not a viable
solution for manufacturers.
Regardless, OEMs often have to buy a
battery that was designed for a smart phone or
portable camcorder. Such products don’t come
with the technical backup required and the
OEM is at the mercy of the product lifecycle
of the consumer device for which the battery
was originally intended.
In contrast, the credit card
range of rechargeable lithium-ion
credit card-sized batteries is
suitable for medical, and portable
electronic applications. The
products feature accurate impedance tracking fuel gauges, an
active protection system, and a
There are two products in the
credit card range — the CC2300
and the CC3800. Measuring just 3-3/8 ×
2-1/8 in., both products have exactly the same
footprint as a regular credit card. At a height
of just 0.36 in., the CC2300 is designed to be
integrated into portable electronic products
where energy density and functionality are
of extreme importance. The CC3800 has the
same footprint and offers the same technology
benefits. However, its larger storage capacity
of 3,800 mAh offers 40% more runtime. As a
result, the CC3800 is also larger, with a height
of 0.58 in.
Both the CC2300 and the CC3800 feature
lithium ion cell technology for long runtime
and fast charge capability. Each of these batteries operates from 4.2V down to 3.0V ( 3.7V
average) and has a typical capacity of 2,300 or
These new smart batteries are ideal for
applications including telehealth devices and
numerous other portable medical and electronic devices intended for professional use.
Meeting internationally recognized
standards for safety and transportation, the
batteries are supplied with comprehensive
technical back-up, enabling the designer to
easily integrate the product into the device
system. Both the CC2300 and CC3800 come
with an active electronic protection system
that makes them resistant to over-charging,
over-discharging, and short-circuiting.
The batteries are exempted from the Dangerous Goods Shipping regulation, thus minimizing the cost and complexity of freighting.
The labels, packaging, EEPROM set-up and
case color can be customized according to the
The CC2300 and CC3800 are backed up
with a number of accessories that help OEMs
the batteries into
and hook-up development PCBs
that can greatly
reduce the time
The smart credit card-sized batteries are
unique, not only due to their physical size, but
also to the technology employed. Designed
with flexibility in mind, they offer freedom of
choice to OEMs. And just like a sugar cube
or a quarter, the name of the battery clearly
describes the technology encapsulated in such
a small piece of engineering real estate. MDT
Bringing Original Ideas to Life:
The Development of the Credit Card-Sized Battery
The credit card battery is ideal for applica-
tions including telehealth devices.
The credit card battery was developed in
response to OEM demand for a short lead
time, compact, and rechargeable lithi-
um-ion battery solution for their devices.