EEVblog #518 - 9V Alkaline Battery Construction

[alm]

Last time I checked LSD 9V batteries were expensive, though. Much more expensive than LSD AA cells, or alkaline 9V batteries.

[saturation]

You'd need to check with your country for prices and availability.  In the USA, Tenergy Centura LSD 9V are $3-5 each typically.  Duracell alkaline primary 9v are $1.5-5 each, for either price is lowest if you buy in bulk.   You can find no name Chinese brand ZnCl as low as $1 each, if you're willing to risk it.  You can maximize your price/performance by clearly defining their application.


http://www.amazon.com/s?ie=UTF8&field-keywords=lsd%209v&index=blended&link_code=qs&sourceid=Mozilla-search&tag=mozilla-20

Last time I checked LSD 9V batteries were expensive, though. Much more expensive than LSD AA cells, or alkaline 9V batteries.

[alm]

Tenergy are not exactly known for their stellar QC, however. A more reputable brand like Maha will easily cost $10+. And most reputable brands (like Sanyo) don't even seem to make LSD 9V batteries.

[saturation]

Tenergy is a small company but they've been making steady gains; not many startups are willing to give well documented datasheets.  I've tested a sample of their AA, AAA and 9V LSD and it performs as written, including AH retention in real time, not accelerated aging.  But outside the USA, caveat emptor.  Add to that, they easily price out most of its competition, like Maha's Imedion or eneloop, while maintaining close functionality.

Back in 2003-4, they were just a vendor, All-Battery.com.  Then they went from a rinky-dink address to  larger digs at 436 Kato Terrace Fremont, CA 94539 ? ...

Which now happens to be Tenergy Corp HQ.  A few years later a sign for Tenergy appeared, following Google street view updated photos over the years; then a power consulting company soon appeared, also housed at the same address.

http://www.manta.com/c/mtx3x7k/standard-engineering-corp
http://www.tenergy.com/

http://www.all-battery.com/datasheet/10001_datasheet.pdf

About 2010, they got themselves BBB certified, which is wholly optional:

http://www.bbb.org/greater-san-francisco/business-reviews/batteries-dry-cell-wholesale-and-manufacturers/all-battery-in-fremont-ca-360907#bbblogo

Which suggest to me, whomever is in charge is working to provide quality services, product I would guess also, and stay in the US for the long haul. 

So in the USA, its a good bet for at least the 9V LSD, to which there are few makers.

Tenergy are not exactly known for their stellar QC, however. A more reputable brand like Maha will easily cost $10+. And most reputable brands (like Sanyo) don't even seem to make LSD 9V batteries.

[AndersAnd]

Alkaline Batteries A/S mentioned in the patent is a company here in Denmark. A/S means something similar to Ltd. in Danish. I have often passed right by the former Hellesens factory.
Alkaline Batteries A/S used to be named Hellesens and was founded by Wilhelm Hellesen.
According to this from Danish Museum of Science and Technology, Wilhelm Hellsen invented and manufactured the world's first dry cell battery in the 1880's and already exported to more than 50 countries in the 1890's.

https://en.wikipedia.org/wiki/Wilhelm_Hellesen

Wilhelm Hellesen

Frederik Louis Wilhelm Hellesen (1836 – December 22, 1892) was a Danish inventor and industrialist. In 1887 he designed what is thought to be the first dry cell battery based on the Leclanché cell design.[1] The same year he founded the company W. Hellesen In 1889 he sold his first batteries to the Danish Telephone Company. The same year a young chemist Valdemar Ludvigsen (1861–1939) came to the factory helping by the further development of the batteries. When Frederik Hellesen died in 1892 his widow took over the company with the help of Ludvigsen. In 1906 V. Ludvigsen became the sole owner of the factory with the name A/S Hellesens Enke & V. Ludvigsen. (later known as A/S Tudor-Hellesens, A/S Hellesens, and GN Hellesens), now defunct. Today the Hellesens brand name is owned by Duracell. In 1992 the Danish company was sold to GP Batteries International in Singapore belonging to Gold Peak Industries Ltd. Hong Kong. In 2005 the last factory in Thisted was closed and all machinery were shipped to a new factory in Malaysia.

Hellesens was a very well known battery brand here in Denmark before they stopped manufacturing them.

The Danish brewery Carlsberg even made a 75th anniversary brew for Hellesen in 1962, designed to look like a 1.5 V battery cell: http://www.beercans.cz/beercans/19-collection-OC-OC-beer-cans