We have seen one failure mode with sealed batteries that stands out, and that is long term overcharging. Two reasons for that, one is from failing to set the correct charging voltage, but another main one is not using temperature compensation. The charging voltage for batteries should go down quite a bit at higher temperatures - but without temp comp that won't happen. If you boil flooded batteries you can add water, with sealed batteries not so easy.
.................................................................................................. Northern Arizona Wind & Sun - Electricity From The Sun Since 1979 Solar Discussion Forum: http://www.wind-sun.com/ForumVB/ .................................................................................................. ----- Original Message ----- From: Dana To: 'RE-wrenches' Sent: Tuesday, December 01, 2009 7:35 AM Subject: [RE-wrenches] sealed revival Travis - I echo your results on the addition [per manufacturer's directions] of distilled water and application of a deep re-charge [eq.] charge, I got 4 to 6 months on the 3 banks that we attempted to revive. If we think wet lead acid batteries are a fragile chemical equation then sealed batteries are even more fragile. Dana Orzel Great Solar Works, Inc www.solarwork.com E - d...@solarwork.com V - 970.626.5253 F - 970.626.4140 C - 970.209.4076 I will be the shift in how the world uses power! - Dana Orzel
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