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Battery life
April 17, 2015
2:34 pm
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Chris Carr
Cambridge , Peterborough & Saffron Walden
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Hi All
I have recently been contacted by a client who has been carrying out some experiments with his zinc air batteries and found that if he leaves the batteries for 2 minutes after removing the tab he gets nearly twice the length of use out of a battery than if he puts a battery in after only 20/30 seconds.
I know that some manufacturers put instructions on their packs instructing you to leave up to 60 seconds before use but some do not and how many of us would bother anyway.

April 26, 2015
4:49 pm
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Jo Farquhar
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I have recently had several folk complaining of batteries only lasting 3-5 days not their usual week. I am using the the same batteries from same manufacturer so I might suggest a trial of leaving tab off for longer before use. Will post any findings.

May 7, 2015
9:22 am
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Daniel Bainbridge
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Just an update on battery life and activation. I recently spoke to Rob Metcalf who works for Rayovac, he explained that early activation does not have a significant impact on battery life. He explained that battery draws are not air tight and so they should still be activating in the battery draw. He also explained that the batteries actually take two hours or so before they are able to reach a 1.4 v output. If this is all true it raises the question why resound on their fitting software ask us to wait two minutes before battery insertion, and i believe a few of the manufacturers in their info brochures advise the same.

However an interesting news article this week rivals Rayovac’s claim.
http://kimt.com/2015/05/05/stu…..tery-life/

May 7, 2015
12:50 pm
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Brian Unsworth
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Here’s an interesting experiment. If you take a Rayovac Battery out of the packet and, leaving the sticker on, put it on a battery tester – you will see an active cell. If you do the same with a PowerOne battery you get a momentary surge, but it quickly falls to nothing. Admittedly this is just using an ‘all or nothing tester’ and is not a proper voltage test but it got me thinking. We seem to get a lot of ‘faulty’ Rayovac batteries – so is this the cause….Rayovac say their cells are ‘pre-activated’ to make the start-up time for the user quicker. Any thoughts?

May 12, 2015
5:40 am
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Chris Carr
Cambridge , Peterborough & Saffron Walden
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We have not had any problems with RayOVac batteries recently, but a year or so ago had 2 periods where we had size 10 batteries failing seriously so changed to Power One for this size, but now are back to Ray O Vac.

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