{"product_id":"stealth-550","title":"ST-550 American Bass Audio Stealth 550 | 55Ah AGM Battery | Maintenance-Free, Sealed Power for Car Audio \u0026 More","description":"\u003c!--This is Tabbing Feature--\u003e\n\u003cdiv class=\"tab-titles\"\u003e\n\u003cbutton class=\"tabtitle active\"\u003eDescription\u003c\/button\u003e \u003cbutton class=\"tabtitle\"\u003eSpecifications\u003c\/button\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tabitem\" id=\"Description\"\u003e\n\u003c!--Place Description here--\u003e\n\u003cp\u003e\u003cstrong\u003eUp To 1500 Watt Amplifiers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e12V AGM Battery,55 AH\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eStealth 550 — 55Ah AGM Car Audio Battery for Serious Builds\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Stealth 550 is where the Stealth Energy lineup by American Bass steps into serious territory. With 55 amp-hours of capacity and support for amplifier setups up to 1500 watts, this sealed AGM battery delivers the kind of deep reserve power that multi-amplifier builds and high-output subwoofer systems depend on — stable voltage, fast recovery, and the headroom to keep everything performing at full potential during sustained, hard-hitting playback.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEngineered with Absorbed Glass Mat technology inside a fully sealed, maintenance-free ABS enclosure, the ST-550 provides clean, reliable 12-volt power with zero maintenance. A 660A max discharge current (5-second burst) and an ultra-low 7.5mΩ internal resistance translate to fast energy delivery with minimal voltage sag — exactly what your amplifiers need to stay out of clipping and protect your speakers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eWhy Choose the Stealth 550?\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"standard-markdown grid-cols-1 grid [\u0026amp;_\u0026gt;_*]:min-w-0 gap-3\"\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe ST-550 occupies the performance sweet spot for builders who are running real power. It has the capacity to anchor a dedicated sub amp plus a four-channel setup, or to serve as a beefy secondary battery alongside a stock or upgraded starting battery. At 35 lbs and a 9.02\" × 5.43\" × 8.31\" footprint, it's significantly more powerful than the mid-range options in the lineup while still fitting comfortably in most trunk and cargo area installs. If your system is pushing past 1000 watts and you're noticing dimming lights or inconsistent bass output, the Stealth 550 is built to solve that problem.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"tabitem\" id=\"Specifications\"\u003e\n\u003c!--Place Specificationsn Table here--\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eNOMINAL VOLTAGE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eNOMINAL CAPACITY(20HR)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e55.0AH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eAPPROX WEIGHT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003eApprox 16.2 kg (35.17lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eTERMINAL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003eT6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eCONTAINER MATERIAL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003eABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eMAX. DISCHARGE CURRENT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e660A (5s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eINTERNAL RESISTANCE APPROX\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003eApprox 7.5mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eNOMINAL OPERATING TEMP. RANGE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e25+3 C (77+5 F )\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eDIMENSION\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 229+3mm (9.02 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 138+2mm (5.43 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer Height\u003c\/strong\u003e: 205+3mm (8.07 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Height (with Terminal):\u003c\/strong\u003e 211+3mm (8.31 inches)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eRATED CAPACITY\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e57.2 AH\/2.86A:\u003c\/strong\u003e (20hr ,1.80V\/cell,25 C\/77 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e55.0 AH\/5.50A:\u003c\/strong\u003e (10hr ,1.80V\/cell,25 C\/77 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e47.3 AH\/9.46A:\u003c\/strong\u003e (5hr ,1.75V\/cell,25 C\/77 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e42.9 AH\/14.3A:\u003c\/strong\u003e (3hr ,1.75V\/cell,25 C\/77 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e33.6 AH\/33.6A:\u003c\/strong\u003e (1hr ,1.60V\/cell,25 C\/77 F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eCAPACITY AFFECTED BY TEMPERATURE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e\n\u003cul\u003e\n\u003cli\u003e40 C (104 F): 103%\u003c\/li\u003e\n\u003cli\u003e25 C (77 F): 100%\u003c\/li\u003e\n\u003cli\u003e0 C (32 F): 86%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\u003cstrong\u003eOPERATING TEMP.RANGE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarge:\u003c\/strong\u003e -15~50 C (5~122 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharge:\u003c\/strong\u003e 0~40 C (32~104 F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e -15~40 C (5~104 F)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\n\u003cp\u003e\u003cstrong\u003eCYCLE USE\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e\n\u003cul\u003e\n\u003cli\u003eInitial Charging Current less than 15.5A.Voltage\u003c\/li\u003e\n\u003cli\u003e14.4V~15.0V at 25 C(77 F)Temp. Coefficient -30mV\/ C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\n\u003cp\u003e \u003cstrong\u003eSTANDBY USE\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e\n\u003cul\u003e\n\u003cli\u003eNo limit on Initial Charging Current Voltage\u003c\/li\u003e\n\u003cli\u003e13.5V~13.8V at 25 C(77 F)Temp. Coefficient -20mV\/ C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 30.6739%;\"\u003e\n\u003cp\u003e\u003cstrong\u003eSELF DISCHARGE\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 66.657%;\"\u003e\n\u003cul\u003e\n\u003cli\u003eBatteries may be stored for up to 6 months\u003c\/li\u003e\n\u003cli\u003eat 25 C(77 F) and then a freshening charge is required.\u003c\/li\u003e\n\u003cli\u003eFor higher temperatures the time interval will be shorter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4 style=\"text-transform: uppercase; color: #d92328; text-align: center;\" class=\"heading h4\"\u003eSupport\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: #e20d0d;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0544\/4596\/5511\/t\/3\/assets\/STEALTH-550-Specs.pdf%20\" style=\"color: #e20d0d;\" target=\"_blank\"\u003eSpecification Sheet (PDF)\u003c\/a\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Stealth Energy","offers":[{"title":"55Ah AGM","offer_id":50762270540062,"sku":"ST-550","price":256.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7171\/1262\/files\/stealth-550-battery-521094_4747fbe7-dac0-4ff1-85cf-917a2f0f9bc8.jpg?v=1775504720","url":"https:\/\/platinumhpsolutions.com\/products\/stealth-550","provider":"Platinum High Performance Solutions, LLC.","version":"1.0","type":"link"}