{"type":"product","schema_version":"1.0","item_id":"100950089587","canonical_url":"https://tw.bid.yahoo.com/item/100950089587","title":"【當天發貨】4串14.8V 16.8V 18650 鋰電池保護板 帶均衡 可啟動電鑽 持續40A電流","subtitle":null,"condition":"全新品","currency":"TWD","observed_at":"2026-04-23T23:39:41.185Z","current_price":135,"original_price":null,"stock_status":"out_of_stock","available_quantity":5,"sold_quantity":15,"seller":{"id":"Y0708937252","name":"Y0708937252","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/61600e6d-6cb8-4de6-a949-7cb257c5ea4c.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/2229b321-54bf-456c-b0ed-f625ce2af3a4.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/c626d34e-146c-49ea-9c50-5b1512a89ddb.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/213d5390-8a9b-4e42-933d-45c240d78096.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null}],"description":"產品參數\n型號：4串 16.8V/40A同口\n適用電壓功率：16.8V\n適用電池類型：3.7V 三元電池、鈷酸鋰電池、錳酸鋰電池\n功能說明：鋰電池過充保護；過放保護；過流保護；輸出短路保護\n持續工作電流：40A MAX\n過放電保護電壓：2.6V\n過充電保護電壓：4.25V\n充電電流：20A MAX\n均衡充電功能：帶此功能 4.2V開啟\n應用範圍：電動車、電動助力車、滑板車、逆變器等\n外型尺寸：長60mm*寬45mm*厚3.4mm\n單位重量：9.8g\n\n分口與同口的區別\n分口，充放電負極分開，需要各自引出一條線，方店端接P-，充電端接C-，放電迴路不經過\n充電MOS，當充電電流小而放電電流大的應用場合時，建議用分口，一班只要1個充電MOS\n即可滿足8A以內的充電電流要求，節約成本同時減小發熱；同口充放電共用一個負極C-，只\n需一條引出線，充放電MOS是成對出現的，同口板充電電流和放電電流一樣大。\n\n均衡功能\n電池在使用過程中性能慢慢變差，包括內阻增大，容量減小，極間漏電增大，外部線路損耗\n不一致等，導致電池組內各串電壓不一致，時既可裡用量不段減小，為了緩解這個問題，引\n入了均衡功能。在充電過程中當某一串電壓達到某個電壓點時啟動分流迴路，減小充電電流\n，減慢充電速度，等待其他串。然而達到了均衡的效果。\n\n電池的匹配\n電池成組時，請先匹配好，建議每節電池電壓相差不高於10mV，內阻相差不大於4mΩ，容量\n相差低於20mAh，電池一致性越好，可利用容量越接近標稱容量。","shipping_methods":[{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"萊爾富取貨付款","fee":0,"currency":"TWD"},{"name":"宅配/貨運","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","萊爾富取貨付款","7-ELEVEN取貨付款"],"category_id":"24678","category_name":"其他","breadcrumb":[{"id":"24198","name":"居家、家具與園藝","url":"/tw/%E5%B1%85%E5%AE%B6%E3%80%81%E5%AE%B6%E5%85%B7%E8%88%87%E5%9C%92%E8%97%9D-24198-category.html"},{"id":"24678","name":"其他","url":"/tw/%E5%85%B6%E4%BB%96-24678-category.html"}],"view_count":2,"watch_count":6}