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I constructed a DIY radiant heater using 3/4" PEX water tubing, standard metal framing, 2" rigid residential poly insulation and double pane insulated greenhouse glazing. The box itself weighs less than 30 lbs complete. The goal for the project was to create a a heater capable of producing hot...

https://m.dhgate.com/product/4pcs-calb-3-2v-ca100-100ah-brand-new-a-grade/528246951.html?f=bm%7CGMC%7C%7Bifdyn:dyn%7D%7Bifpla:pla%7D%7Bifdbm:DBM%7D%7C%7Bcampaignid%7D%7C%7Badgroupid%7D%7C528246951%7C%7Btargetid%7D%7C103006001%7CUS%7Ccontinent2015%7C%7Bdevice%7D%7C2%7C&utm_source=%7Bifdyn:dyn%7D%7...

Panel Info: VOC: 47.7 V ISC: 5.75 A 3 in series: 143.1 v and 5.75 A The above paralleled 3 times: 143.1 V 17.25 A Total Wattage for 9 panels: 2468 W This falls in line with specs for MPP PCM60X Solar Charge Controller, which is programmable (intend to use with DIY Powerwall) 48 V Battery...

Apparently the QO and QOB are DC rated for 48 Volts. https://download.schneider-electric.com/files?p_Doc_Ref=0730CT9801#:~:text=The%20standard%20rated%20frequency%20for,for%2060%20Hz%20operation%20only.