{"id":13840,"date":"2026-05-19T00:07:40","date_gmt":"2026-05-18T16:07:40","guid":{"rendered":"https:\/\/www.balderpower.com\/?post_type=product&#038;p=13840"},"modified":"2026-05-22T21:59:08","modified_gmt":"2026-05-22T13:59:08","slug":"custom-oem-li-ion-battery-packs-21-6v-4-5ah-underwater-scooter-ip68-battery","status":"publish","type":"product","link":"https:\/\/www.balderpower.com\/de\/custom-oem-li-ion-battery-packs-21-6v-4-5ah-underwater-scooter-ip68-battery\/","title":{"rendered":"21.6V 4.5Ah IP68 Underwater Scooter Battery Pack \u2014 Depth-Rated to 60 Meters | OEM Supply"},"content":{"rendered":"<p data-start=\"2828\" data-end=\"3511\">The 21.6V 4.5Ah IP68 underwater scooter battery pack is manufactured and tested to continuous submersion at depths of 50 to 60 meters, with every production unit verified by individual air-pressure integrity testing and full-depth water immersion before shipment. Built around Samsung SDI 21700 high-drain cells, the pack delivers 20A continuous discharge current to sustain 400\u2013600W thruster motor operation \u2014 a specification matched to the load profile of compact diver propulsion vehicles and underwater scooter platforms. The weight-optimized form factor is engineered to maintain near-neutral buoyancy contribution within the host device chassis during active diving operations.<\/p>\n<p data-start=\"3513\" data-end=\"4317\">Compatibility with the LEFEET S1 and LEFEET S1 Pro, two widely deployed compact underwater scooter platforms with precise battery bay geometry and connector interface requirements. The Japanese-brand IC BMS architecture provides full multi-layer protection across overcharge, overdischarge, overcurrent, overtemperature, and short circuit conditions. EPDM O-ring sealing compound is specified on all mechanical assembly interfaces for its chemical resistance to both fresh and chlorinated water \u2014 environments where standard silicone compounds show accelerated oxidative degradation under repeated pressure-cycle exposure. Cell matching at the production stage uses internal resistance grading to ensure uniform discharge behavior across the cell group under sustained thruster load.<\/p>\n<p data-start=\"4319\" data-end=\"4803\">OEM and ODM customization is available across voltage, capacity, enclosure dimensions, waterproof depth rating, and connector specification. Factory documentation includes IP68 test records, pressure log data, and UN38.3 transport compliance certificates, supporting downstream product certification for customers requiring CE, RoHS, or market-specific approvals. Volume replenishment orders are fulfilled against locked production specifications to ensure batch-to-batch consistency.<\/p>","protected":false},"excerpt":{"rendered":"<ul>\n<li data-start=\"2056\" data-end=\"2238\">\n<p data-start=\"2058\" data-end=\"2238\"><strong data-start=\"2058\" data-end=\"2091\">IP68 rated to 60 meters depth<\/strong> \u2014 manufactured and immersion-tested to declared depth; every unit passes individual air-pressure leak check and water immersion QC before shipment<\/p>\n<\/li>\n<li data-start=\"2239\" data-end=\"2370\">\n<p data-start=\"2241\" data-end=\"2370\"><strong data-start=\"2241\" data-end=\"2267\">21.6V \/ 4.5Ah \/ 97.2Wh<\/strong> \u2014 Samsung SDI 21700 Li-ion cells, 20A continuous discharge, supports 400\u2013600W thruster motor operation<\/p>\n<\/li>\n<li data-start=\"2371\" data-end=\"2531\">\n<p data-start=\"2373\" data-end=\"2531\">Compatible with <strong data-start=\"2389\" data-end=\"2402\">LEFEET S1<\/strong> Und <strong data-start=\"2407\" data-end=\"2424\">LEFEET S1 Pro<\/strong>; suitable for underwater scooters, diver propulsion vehicles (DPVs), and compact subsea thruster platforms<\/p>\n<\/li>\n<li data-start=\"2532\" data-end=\"2635\">\n<p data-start=\"2534\" data-end=\"2635\"><strong data-start=\"2534\" data-end=\"2565\">Underwater hot-swap capable<\/strong> \u2014 battery replacement supported at depth without surfacing the device<\/p>\n<\/li>\n<li data-start=\"2636\" data-end=\"2797\">\n<p data-start=\"2638\" data-end=\"2797\">Voltage, capacity, enclosure dimensions, waterproof depth rating, and connector type available for OEM\/ODM customization; volume replenishment orders supported<\/p>\n<\/li>\n<\/ul>","protected":false},"featured_media":13842,"template":"","meta":{"_acf_changed":false,"nf_dc_page":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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