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Viesti: <blockquote data-quote="upnorthandpersonal" data-source="post: 43950" data-attributes="member: 10225">Terve <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" />My Finnish writing is terrible, so I'll stick to English - sorry.If you want to know more about my set-up, you can read my blog: <a href="https://medium.com/@upnorthandoffgrid/5-lets-make-electricity-part-2-components-and-costs-1e73977b31a1">https://medium.com/@upnorthandoffgrid/5-lets-make-electricity-part-2-components-and-costs-1e73977b31a1</a>I've bought about 60kWh worth of LiFePO4 batteries, and will probably add another 15kWh soon. My preferred dealers are Luyuan and Docan, which you can find on Alibaba; Docan tends to have stock in the EU. Stay away from Aliexpress.As for cold weather: if you put them in an insulated box and add a small 7W polyimide heating element with a thermostat you're fine. If you couple it to a solar installation, you won't do much charging anyway in winter, and storing these cells well below freezing is fine (it even slows calendar aging).</blockquote>