tag:blogger.com,1999:blog-3102963615850212294.post6495923000098882720..comments2023-09-26T10:40:01.875+01:00Comments on Solar Power - A Bodger's Guide: A Lifetime of Power? (Part 2)Outtasighthttp://www.blogger.com/profile/02048189191321429295noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3102963615850212294.post-79869070484613617842013-03-16T07:34:04.934+00:002013-03-16T07:34:04.934+00:00Yes, you could expect maybe that many cycles from ...Yes, you could expect maybe that many cycles from OPzV lead acid cells costing double the price of a comparable LiFeYPO4 battery and with only 30% of the capacity available in daily cycling and a requirement to keep the lead acid cell at 100% SoC all the time.<br /><br />The test did not say the cells lasted for 13k cycles, but that they could not detect any degradation after 13k cycles. But of more interest is that the cells are rated for 8,000 cycles at 70% DoD.<br /><br />For solar applications, the LiFeYPO4 cells affinity for partial charging means it is vastly superior to any normal lead acid battery (all of which are destroyed by partial charging).<br /><br />I am keeping an eye on the hybrid lead-carbon cell from Axion Power. It uses a traditional positive plate and then a nano-carbon sandwich ultra capacitor negative plate. This cell has the potential to be cheaper than lithium-ion and not suffer from sulphation of the negative plate (as no lead sulphate is formed on the negative plate). This would allow partial charge operation.<br /><br />But the PbC cells are a way off commercial availability and in the meantime LiFeYPO4 cells are available 'off the shelf' and offer unmatched advantages in compactness, light weight, and freedom from gassing that lead acid cells (especially cheap flooded ones) can't compete against.Outtasighthttps://www.blogger.com/profile/02048189191321429295noreply@blogger.comtag:blogger.com,1999:blog-3102963615850212294.post-33748504955890614192013-03-14T15:55:37.972+00:002013-03-14T15:55:37.972+00:00"13k cycles? That's amazing"
Why..."13k cycles? That's amazing" <br /><br /> Why ? at 10 % DOD one can expect similar cycles from flooded lead acid OPzS Batteries Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3102963615850212294.post-45384033199689453392012-08-02T20:57:46.315+01:002012-08-02T20:57:46.315+01:0013k cycles? That's amazing.13k cycles? That's amazing.The Stay @ Home-Gardenerhttps://www.blogger.com/profile/06102175625149771801noreply@blogger.com