Design library for lithium ion power packs cuts development costs

Design library for lithium ion power packs cuts development costs

New Products |
By Nick Flaherty

The EasyPack SLIM is the first new standard pack from the company for several years and uses a different construction from previous packs to achieve a 5.2mm thickness for a 1590mAh capacity.

The pack is aimed at medical and portable applications where bulk is a factor, and so the design library includes documentation for UL and IEC certification. This can save designers up to €10,000 in certification costs, says Alex Stapleton, the product manager for power packs at VARTA Storage.

“We’ve had the SL and XL for the last ten years and haven’t added to the range until today as we have identified that we think we can make it easier for OEMs and designers to add the packs to their systems,” he said. “One big part of that is 3D files for each of the batteries so the designer can look at the practical side quickly. There’s also a whole section on certification and compliance – it’s very easy to support with the documentation to meet European directives as well as UL and IEC requirements when designing for markets such as medical and this saves time and cost. Rather than having to find a battery and certify it, that’s already done, and even if you have a sample coming from a distributor you are ahead of the game.”

The SLIM pack uses a plastic frame design with a robust label wrap similar to a battery in a mobile phone rather than a full hard plastic casing. “There is a sacrifice in that the other EasyPacks have two connector points on the bottom or front face of the pack but this has one connector point – we felt this was acceptable,” said Stapleton.

The Design Library is starting with EasyPack and will be rolled out to support all Varta’s CellPac LITE products during June 2016, enabling designers to begin work with their preferred battery choice. A Technical Handbook provides extended cell performance data and battery design tips so that users can quickly compare options and estimate the pack’s performance in their device over variations of load, temperature and discharge current. Importantly, 3D design files of the selected battery in both .stp and .igs file formats, ready for import into all popular CAD software products, assist the designer in the practical mechanical design and fast proof of concept.

Applicable to relevant models, also provided in the library are the certification files for battery standards like IEC 62133 Second Edition and UL 2054 notice of authorisation, VARTA Storage’s REACH and RoHS statements, battery handling precautions, shipping documentation in line with the latest UN38.3 requirements and a material safety data sheet.

The EasyPack SLIM rechargeable battery pack is available for sampling now through authorised distributors. The VARTA Design Library for the EasyPack SLIM may also be downloaded from VARTA’s website or will be available from any authorised distributor of CellPac LITE batteries.

More information may be found at


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