{"id":98,"date":"2020-11-16T16:28:57","date_gmt":"2020-11-17T00:28:57","guid":{"rendered":"https:\/\/denco.ad6dm.net\/batts\/?p=98"},"modified":"2020-11-17T10:33:58","modified_gmt":"2020-11-17T18:33:58","slug":"denco-batt-mk-v","status":"publish","type":"post","link":"https:\/\/denco.ad6dm.net\/batts\/denco-batt-mk-v\/","title":{"rendered":"DenCo Batt Mk V"},"content":{"rendered":"\n<p>This battery turned out to be the basis for several other batteries. It incorporates a new 100A &#8220;slim BMS&#8221; that I found from Aliexpress. I also integrated neoprene padding to help cushion the overall pack, although this padding is a false sense of security as the battery cell holders are very fragile and will crack with any impact even with padding. This Mark 5 version has fused main output, extensive amounts of kapton tape to protect the cell heads, and uses LiitoKala cells.<\/p>\n\n\n\n<p><strong>General Specs:<\/strong><br>Created: September 8, 2019.<br>Cells: LiitoKala 32700 7Ah 3.2v LiFePO4<br>BMS: 4S 100A 12.8V BMS Balance Proection PCB Board (a.k.a. &#8220;small thin 100A&#8221;)<br>Configuration: 4S1P<br>25A automotive fuse on main output<br>New since last make: New BMS, neoprene padding added.<br>Current Owner: K6HZR Jose<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtTUYAA80oh-1024x768.jpg\" alt=\"\" data-id=\"102\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtTUYAA80oh.jpg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=102\" class=\"wp-image-102\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtTUYAA80oh-1024x768.jpg 1024w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtTUYAA80oh-300x225.jpg 300w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtTUYAA80oh-768x576.jpg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtTUYAA80oh-1536x1152.jpg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtTUYAA80oh.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLUEAAHaJN-1024x768.jpg\" alt=\"\" data-id=\"101\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLUEAAHaJN.jpg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=101\" class=\"wp-image-101\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLUEAAHaJN-1024x768.jpg 1024w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLUEAAHaJN-300x225.jpg 300w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLUEAAHaJN-768x576.jpg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLUEAAHaJN-1536x1152.jpg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLUEAAHaJN.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLU4AE8YIh-1024x768.jpg\" alt=\"\" data-id=\"99\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLU4AE8YIh.jpg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=99\" class=\"wp-image-99\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLU4AE8YIh-1024x768.jpg 1024w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLU4AE8YIh-300x225.jpg 300w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLU4AE8YIh-768x576.jpg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLU4AE8YIh-1536x1152.jpg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtLU4AE8YIh.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtMU0AAVhYi-1024x768.jpg\" alt=\"\" data-id=\"100\" data-full-url=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtMU0AAVhYi.jpg\" data-link=\"https:\/\/denco.ad6dm.net\/batts\/?attachment_id=100\" class=\"wp-image-100\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtMU0AAVhYi-1024x768.jpg 1024w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtMU0AAVhYi-300x225.jpg 300w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtMU0AAVhYi-768x576.jpg 768w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtMU0AAVhYi-1536x1152.jpg 1536w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/ED_gVtMU0AAVhYi.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><\/li><\/ul><\/figure>\n\n\n\n<figure class=\"wp-block-embed-twitter wp-block-embed is-type-rich is-provider-twitter\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"550\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Another <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> 12v 7Ah pack (a.k.a. DenCo\u2122 Batt Mark V). Took a while to complete. Added some neoprene padding this time \ud83d\ude0e <a href=\"https:\/\/twitter.com\/hashtag\/hamradio?src=hash&amp;ref_src=twsrc%5Etfw\">#hamradio<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/QRP?src=hash&amp;ref_src=twsrc%5Etfw\">#QRP<\/a> <a href=\"https:\/\/t.co\/jUtyRlqTEo\">pic.twitter.com\/jUtyRlqTEo<\/a><\/p>&mdash; AD6DM Dennis (@AD6DM) <a href=\"https:\/\/twitter.com\/AD6DM\/status\/1170901115514146816?ref_src=twsrc%5Etfw\">September 9, 2019<\/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>LiitoKala 32700 cells<br>Nominal Capacity: 7Ah (6.5Ah in practical use)<br>Nominal Voltage: 3.2V per cell<br>Dimensions: 32mm x 70 mm<br>Weight: 145g per cell<br>Internal resistance: less than 8 m\u03a9<br>Cycle life: > 2000 cycles, DOD at 80%<br>Input charging voltage: 3.65v\/cell<br>Input charging current: 3A<br>Continuous discharge current: 30A<br>Max discharge current (pulse): 6C<br>Discharge cut-off voltage: 2.5V<br>Charging temp: 0-45\u00b0C<br>Discharge temp: -20\u00b0C \u2013 60\u00b0C<br>Storage temp: -20\u00b0C \u2013 45\u00b0C<\/p>\n\n\n\n<p><strong>BMS Specs:<\/strong><br>Continuous discharge current: 100A<br>Instantaneous discharge current: 150A<br>Charging voltage: 14.8V<br>Charging current 10A max<br>Overcharge detection voltage: 3.75\u00b10.05V<br>Overcharge detection delay time: 1300ms<br>Overcharge release voltage: 3.6\u00b10.05V<br>Balance detection voltage: 3.6\u00b10.05V<br>Balance release voltage: 3.59\u00b10.05V<br>Balance current: 58mA<br>Over discharge detection voltage: 2.1\u00b10.08V<br>Over discharge detection delay time: 145s<br>Over discharge release voltage: 2.30\u00b10.1V<br>Over current detection voltage: 200mV<br>Over current detection delay time: 20ms<br>Over current protection current: 120\u00b110A<br>Over current protection release: cut load<br>Detection condition: Exterior load short circuit<br>Detection delay: 300us<br>Temperature protection: Can use external temperature switch<br>Main circuit conduction resistance: &lt;= 20m\u03a9<br>Working temperature: -20\u00b0C to 80\u00b0C<br>Dimensions: 70mm x 60mm x 8.5mm<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"200\" src=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/qr_batt_mk_V.png\" alt=\"\" class=\"wp-image-257\" srcset=\"https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/qr_batt_mk_V.png 200w, https:\/\/denco.ad6dm.net\/batts\/wp-content\/uploads\/2020\/11\/qr_batt_mk_V-150x150.png 150w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/figure><\/div>\n","protected":false},"excerpt":{"rendered":"<p>This battery turned out to be the basis for several other batteries. It incorporates a new 100A &#8220;slim BMS&#8221; that I found from Aliexpress. I also integrated neoprene padding to help cushion the overall pack, although this padding is a false sense of security as the battery cell holders are very fragile and will crack &hellip;<\/p>\n<p class=\"read-more\"> <a class=\" thunk-readmore button \" href=\"https:\/\/denco.ad6dm.net\/batts\/denco-batt-mk-v\/\"> <span class=\"screen-reader-text\">DenCo Batt Mk V<\/span>Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-98","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\/98","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=98"}],"version-history":[{"count":3,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/posts\/98\/revisions"}],"predecessor-version":[{"id":258,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/posts\/98\/revisions\/258"}],"wp:attachment":[{"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/media?parent=98"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/categories?post=98"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/denco.ad6dm.net\/batts\/wp-json\/wp\/v2\/tags?post=98"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}