{"id":2717,"date":"2023-12-03T10:32:01","date_gmt":"2023-12-03T08:32:01","guid":{"rendered":"https:\/\/racov.ro\/?p=2717"},"modified":"2023-12-03T10:32:01","modified_gmt":"2023-12-03T08:32:01","slug":"home-made-car-battery-charger-with-schematic-and-explanations","status":"publish","type":"post","link":"https:\/\/racov.ro\/index.php\/2023\/12\/03\/home-made-car-battery-charger-with-schematic-and-explanations\/","title":{"rendered":"Home made car battery charger with schematic and explanations"},"content":{"rendered":"<p>I wanted to make a battery charger for my car, because I have this car that I rarely use, and one day when I want to start it, the battery might be flat.<br \/>\nTalking about the cheap side, the market has basically two types of models. One \u201cSmart\u201d, switch mode power supply with a bit of electronics, and another \u201cDumb\u201d charger, just a transformer and a bridge rectifier.<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/i0.wp.com\/i.pinimg.com\/originals\/fa\/80\/a1\/fa80a191dabdb3e099d310a9794ea8bb.png?resize=555%2C312&#038;ssl=1\" width=\"555\" height=\"312\" \/>The Smart charger is good and fairly underpowered. Sometimes it does too much analysis of the battery and refuses to charge it, for reasons unknown to men; or sometimes it starts charging and stops abruptly.<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/i0.wp.com\/i.pinimg.com\/originals\/75\/f1\/aa\/75f1aa7d2ab0112667a36db8016369c3.png?resize=567%2C319&#038;ssl=1\" width=\"567\" height=\"319\" \/>The Dumb charger, charges, no matter what, but the cheap ones are so bad, it\u2019s an insult to the consumer. They are SO underpowered, so poorly made, if it wasn\u2019t so tragic, it would be laughable.<br \/>\nI wanted put my charger to the battery, and connect it to a programmable power socket, to periodically come to life and charge my battery. The Smart ones cannot do that, because when they\u2019re powered up, you always need to press some buttons.<br \/>\nIt\u2019s simple and reliable, but I also added some safety features.<\/p>\n<p>So, I started from the simplest design,<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/i0.wp.com\/i.pinimg.com\/originals\/4c\/14\/e9\/4c14e95f5536ecb91fce464ff7e48ff6.jpg?resize=369%2C290&#038;ssl=1\" width=\"369\" height=\"290\" \/>and added a few more components for safety and convenience.<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/i0.wp.com\/i.pinimg.com\/originals\/5e\/1a\/ee\/5e1aee352744d9fc1d630a8af95b5400.png?resize=601%2C338&#038;ssl=1\" width=\"601\" height=\"338\" \/>The charging curve looks like this<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/i0.wp.com\/i.pinimg.com\/originals\/e6\/16\/86\/e616867ef3ffde512bd1b35fc33f5b8b.png?resize=574%2C323&#038;ssl=1\" width=\"574\" height=\"323\" \/>And the final product works perfectly.<br \/>\n<img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter\" src=\"https:\/\/i0.wp.com\/i.pinimg.com\/originals\/78\/3b\/01\/783b017e52db30337ded35f538bda7a0.jpg?resize=691%2C389&#038;ssl=1\" width=\"691\" height=\"389\" \/>You can see how it all came to be in this video:<br \/>\n<iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/k_YP075VwlI?si=Ug7j9NlayJfGOfzN?rel=0\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\"><span data-mce-type=\"bookmark\" style=\"display: inline-block; width: 0px; overflow: hidden; line-height: 0;\" class=\"mce_SELRES_start\">\ufeff<\/span>\ufeff<\/span><\/iframe><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I wanted to make a battery charger for my car, because I have this car that I rarely use, and<\/p>\n","protected":false},"author":1,"featured_media":2718,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[2,3],"tags":[],"class_list":["post-2717","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-2","category-3"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/racov.ro\/wp-content\/uploads\/2023\/12\/feat-sml.jpg?fit=700%2C350&ssl=1","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p75FkB-HP","jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/posts\/2717","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/comments?post=2717"}],"version-history":[{"count":1,"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/posts\/2717\/revisions"}],"predecessor-version":[{"id":2719,"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/posts\/2717\/revisions\/2719"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/media\/2718"}],"wp:attachment":[{"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/media?parent=2717"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/categories?post=2717"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/racov.ro\/index.php\/wp-json\/wp\/v2\/tags?post=2717"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}