PI-72-04 Datasheet, PDF (3/11 Pages) Cymbet Corporation – EnerChip Standards Compliance and Use Procedures

PI-72-04 EnerChip Standards Compliance
Cymbet will update this document and notify the appropriate parties, if a new Cymbet product is commercially
released that requires modification of the statements made in this document.
Section V - CE Mark 93/68/EEC
CE Mark is a mandatory conformity mark for products placed on the market in the European Economic Area.
With CE marking on a product, Cymbet ensures that the product conforms with the essential requirements of
the applicable EU directives. Product manufacturers perform self-certification. CE marking applies to product
groups. EnerChip solid state battery devices are not covered by these product groups. Cymbet Evaluation
Kits CBC-EVAL-05, EVAL-06, EVAL-09, EVAL-10, EVAL-10B and CBC-EVAL-3105 have been self-certified to
CE Mark 93/68/EEC and CE marked.
Section VI - Underwriters Laboratory Standards and Specifications
The UL standard that cover the types of batteries used in smaller rechargeable apparatus and appliances
is UL1642 “UL Standard for Safety for Lithium Batteries”. The testing requirements in this standard cover
primary (nonrechargeable) and secondary (rechargeable) lithium batteries for use as power sources in
products.
This document is instructional for electronics designers using EnerChip solid state batteries. However, Cymbet
EnerChip Solid State Batteries are not covered under the scope of the UL1642 standard for two main
reasons:
1. These requirements cover lithium batteries intended for use in technician replaceable or user-replaceable
applications. EnerChip solid state batteries are permanently soldered to a printed circuit board or
substrate for life-of-product performance and are not replaceable. UL 1642 does not apply to Cymbet
EnerChip products.
2. These requirements cover batteries that contain 4.0 grams or less total metallic lithium with not more than
1.0 gram of metallic lithium per cell. A Cymbet EnerChip does not contain any metallic lithium. The highest
capacity commercially available EnerChip CBC050 contains only 500 micrograms of crystalline Lithium
Cobalt Oxide and 500 micrograms of crystalline Lithium Phosphorous OxyNitride (LiPON).
Even though EnerChips are not explicitly covered under UL1642, Cymbet EnerChips do meet UL1642
requirements for battery safety testing and marking. Cymbet EnerChips comply with the important battery
use considerations detailed in UL1642 as follows:
• Requirement 4.1 - Casing - The casing of a lithium battery shall have the strength and rigidity necessary
to resist the abuses to which it may be subjected, without the resulting in a risk of fire. EnerChip
devices are typically packaged in a plastic semiconductor package, molded device or product package
that provides abuse resistance. Moreover, EnerChips do not have any chemical mechanisms that could
result in a risk of fire.
• Requirement 4.2 - Electrolyte - A user replaceable battery shall not contain pressurized vapor or liquid
that could spray materials into the eyes of leak more than 5 milliliters of liquid when the battery casing
is punctured under normal laboratory conditions. Cymbet EnerChips utilize a solid state electrolyte that
does not contain any vapor or liquid.
• Requirement 4.3 - Use - A lithium battery shall be protected from abnormal charging currents during
use. The Cymbet EnerChip uses a Constant Voltage/Any Current charging mechanism. When charging
currents rise, the EnerChip impedance rises automatically protecting the EnerChip from abnormal
charging currents. Furthermore, EnerChip batteries are covered under Exception 2 of this requirement
since the EnerChip has been tested and found not to have a risk of explosion.
©2012 Cymbet Corporation • Tel: [phone] • www.cymbet.com
Doc PI-72-04 Rev A


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