{"id":183,"date":"2020-11-16T19:03:21","date_gmt":"2020-11-17T03:03:21","guid":{"rendered":"https:\/\/denco.ad6dm.net\/batts\/?p=183"},"modified":"2021-08-13T17:07:30","modified_gmt":"2021-08-14T01:07:30","slug":"denco-batt-mk-viii","status":"publish","type":"post","link":"https:\/\/denco.ad6dm.net\/batts\/denco-batt-mk-viii\/","title":{"rendered":"DenCo Batt Mk VIII"},"content":{"rendered":"\n<p>With this late 2020 development, I found a BMS that seemed to match the capabilities of a new BatteryHookup 32650 cell rated at 6Ah. This led to a new version of the battery that could still handle QRO but not quite FT-857D 22A draw for digital transmission duty cycles.<\/p>\n\n\n\n<p>This Mk VII-like battery incorporates a new Blue PVC shrink wrap more suited to the dimensions of 32650 cells, 125mm wide, for better closure at the ends.<\/p>\n\n\n\n<p>General Specs:<br>Created: November 10, 2020.<br>Cells: BatteryHookup 32650 6Ah 3.2v LiFePO4.<br>BMS: HX-4S-6040 18A BMS board for 32650 cells.<br>Configuration: 4S1P<br>New since last make: New type of cells, new BMS, based on Mk VII minus the balance leads.<br>Current Owner: N1UFO Gabe<br><\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-scaled.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-1024x768.jpeg\" alt=\"\" data-id=\"188\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-scaled.jpeg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=188\" class=\"wp-image-188\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-1024x768.jpeg 1024w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-300x225.jpeg 300w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-768x576.jpeg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-1536x1152.jpeg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8592-2048x1536.jpeg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-scaled.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-1024x768.jpeg\" alt=\"\" data-id=\"187\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-scaled.jpeg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=187\" class=\"wp-image-187\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-1024x768.jpeg 1024w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-300x225.jpeg 300w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-768x576.jpeg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-1536x1152.jpeg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8600-2048x1536.jpeg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-scaled.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-1024x768.jpeg\" alt=\"\" data-id=\"185\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-scaled.jpeg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=185\" class=\"wp-image-185\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-1024x768.jpeg 1024w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-300x225.jpeg 300w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-768x576.jpeg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-1536x1152.jpeg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8620-2048x1536.jpeg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-scaled.jpeg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-768x1024.jpeg\" alt=\"\" data-id=\"184\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-scaled.jpeg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=184\" class=\"wp-image-184\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-768x1024.jpeg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-225x300.jpeg 225w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-1152x1536.jpeg 1152w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-1536x2048.jpeg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/IMG_8627-1-scaled.jpeg 1920w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-twitter wp-block-embed-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Bespoke artisanal \ud83d\ude1c <a href=\"https:\/\/twitter.com\/hashtag\/DIY?src=hash&amp;ref_src=twsrc%5Etfw\">#DIY<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/LiFePO4?src=hash&amp;ref_src=twsrc%5Etfw\">#LiFePO4<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/BatteryBuild?src=hash&amp;ref_src=twsrc%5Etfw\">#BatteryBuild<\/a> 6Ah with 4S1P <a href=\"https:\/\/twitter.com\/BatteryHookup?ref_src=twsrc%5Etfw\">@BatteryHookup<\/a> 32650 cells \u26a1\ufe0f12.8v nominal with 2A USB port and voltmeter \ud83d\udd0b BMS capable of 18A continuous charge\/discharge (20A max) &amp; provides overcharge\/overdischarge\/overcurrent\/short protection. <a href=\"https:\/\/twitter.com\/hashtag\/hamradio?src=hash&amp;ref_src=twsrc%5Etfw\">#hamradio<\/a> (1\/3) <a href=\"https:\/\/t.co\/8BelslQ8QH\">pic.twitter.com\/8BelslQ8QH<\/a><\/p>&mdash; AD6DM Dennis (@AD6DM) <a href=\"https:\/\/twitter.com\/AD6DM\/status\/1326041920762638337?ref_src=twsrc%5Etfw\">November 10, 2020<\/a><\/blockquote><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p><strong>Cell Specs:<\/strong><br>Battery Hookup 32650 LiFePO4 cells<br>NOMINAL VOLTAGE: 3.2V<br>CAPACITY: 6000MAH<br>WATT HOURS: 19.2WH<br>FULLY CHARGED VOLTAGE: 3.65V<br>FULLY DISCHARGED VOLTAGE: 2.5V<br>MAX CONTINUOUS CHARGE: 6A (1C)<br>MAX CONTINUOUS DISCHARGE: 18A (3C)<br>MAX PULSE DISCHARGE (10 SECONDS): 60A (10C)<br>CELL WEIGHT: 141 GRAMS OR 4.97 OUNCES<\/p>\n\n\n\n<p><strong>BMS Specs:<\/strong><br>1.Model: HX-4S-6040<br>2.Size: 60 x 40 x 7.2mm<br>3.Continuous discharge current: 18A<br>4.Instantaneous discharge current: 20A<br>5.Charge voltage: 14.4V-15V\/14.8V Charger<br>6.Charge current: 20A(max)<br>7.Overcharge detection voltage: 3.75\u00b10.05V<br>8.Overcharge protection delay: 1300s<br>9.Overcharge relief voltage: 3.6\u00b10.05V<br>10.Electricity balance detection voltage: 3.6\u00b10.05V<br>11.Electricity balance relief voltage: 3.59\u00b10.05V<br>12.Electricity balance current: 58mA<br>13.Over discharge detection voltage: 2.10\u00b10.08V<br>14.Over discharge detection delay: 145s<br>15.Over discharge relief voltage: 2.3\u00b10.1V<br>16.Overcurrent detection voltage: 200mV<br>17.Overcurrent detection delay: 20ms<br>18.Overcurrent protection current: 56\u00b110A<br>19.Short circuit detection delay: 150uS<br>20.Working temperature: -20\u00b0C to +80\u00b0C<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"162\" height=\"162\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2021\/04\/batt_mk_viii_qr_code.png\" alt=\"\" class=\"wp-image-330\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2021\/04\/batt_mk_viii_qr_code.png 162w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2021\/04\/batt_mk_viii_qr_code-150x150.png 150w\" sizes=\"auto, (max-width: 162px) 100vw, 162px\" \/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>With this late 2020 development, I found a BMS that seemed to match the capabilities of a new BatteryHookup 32650 cell rated at 6Ah. This led to a new version of the battery that could still handle QRO but not quite FT-857D 22A draw for digital transmission duty cycles. This Mk VII-like battery incorporates a &hellip;<\/p>\n<p class=\"read-more\"> <a class=\" thunk-readmore button \" href=\"https:\/\/denco.ad6dm.net\/batts\/denco-batt-mk-viii\/\"> <span class=\"screen-reader-text\">DenCo Batt Mk VIII<\/span>Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-183","post","type-post","status-publish","format-standard","hentry","category-lifepo4-batteries"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/posts\/183","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/comments?post=183"}],"version-history":[{"count":5,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/posts\/183\/revisions"}],"predecessor-version":[{"id":364,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/posts\/183\/revisions\/364"}],"wp:attachment":[{"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/media?parent=183"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/categories?post=183"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/tags?post=183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}