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--- systems:battery [2015/12/23 18:59] – superwizard
+++ systems:battery [2016/09/13 00:40] – superwizard
@@ Line 1: / Line 1: @@
+====== Dead UPS Batteries? There’s a Cheaper Way ======
+From: http://www.stevejenkins.com/blog/2012/12/dead-ups-batteries-theres-a-cheaper-way/
+<code>
+. So whenever I remove multiple old batteries from a UPS, the first thing I do is
+shake them individually. If they rattle, they’re dead. Go ahead and toss recycle them (in fact,
+some battery stores will pay you for your dead RBC-style batteries).
+. If they pass the shake test, I connect them to one of my CTEK 12 volt battery chargers (any
+car charger will do – car batteries are also 12 volts). If my charger doesn’t light up, it means
+the battery’s posts aren’t connected internally, and so the battery is dead.
+. If the charger’s lights rapidly switch between “fully charged” and “charging,” then something’s wonky inside the battery, and it’s dead.
+. But if it charges, and stays charged, put it in the “good” pile.
+</code>
 ====== UPS Battery ======