{"title":"Charging System upgrades","description":"\u003cp\u003eWhen you need extra power for your high-performance audio system, check out these charging system upgrades\u003c\/p\u003e","products":[{"product_id":"ds18-inf-80","title":"DS18 INF-80 12V 80Ah AGM Car Audio Power Cell","description":"\u003ch2\u003eDS18 INF-80 12V 80Ah AGM Car Audio Power Cell\u003c\/h2\u003e\n\u003cp\u003eAdd electrical reserve to your car audio build with the DS18 INFINITE 80Ah AGM power cell. Designed for demanding audio systems, this 12-volt battery uses Absorbed Glass Mat technology in a sealed, maintenance-free design.\u003c\/p\u003e\n\u003ch3\u003eReserve Capacity for Your Audio Build\u003c\/h3\u003e\n\u003cp\u003eA properly selected auxiliary battery can support your system's electrical reserve during audio demand. The INF-80 carries a manufacturer-listed 2,300W power-system rating, but that figure is not amplifier output or a guarantee that a particular system will avoid voltage drop. Actual performance depends on amplifier demand, alternator capacity, wiring, battery condition, and listening habits.\u003c\/p\u003e\n\u003ch3\u003eFeatures and Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: DS18\u003c\/li\u003e\n\u003cli\u003eSeries: INFINITE\u003c\/li\u003e\n\u003cli\u003eNominal voltage: 12V\u003c\/li\u003e\n\u003cli\u003eCapacity: 80Ah\u003c\/li\u003e\n\u003cli\u003eBattery technology: AGM (Absorbed Glass Mat)\u003c\/li\u003e\n\u003cli\u003eSealed, maintenance-free design\u003c\/li\u003e\n\u003cli\u003eM5 bolt terminals\u003c\/li\u003e\n\u003cli\u003eFlexible mounting options, including upside-down mounting\u003c\/li\u003e\n\u003cli\u003eManufacturer-listed power-system rating: 2,300W\u003c\/li\u003e\n\u003cli\u003eMade in Vietnam\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFlexible Mounting\u003c\/h3\u003e\n\u003cp\u003eThe sealed, non-spill design allows multiple mounting orientations, including upside down, for installations with limited space. Secure the battery properly and protect the terminals against accidental contact.\u003c\/p\u003e\n\u003ch3\u003eInstallation and Charging Considerations\u003c\/h3\u003e\n\u003cp\u003eKeep this power cell away from heat sources. Do not install it in the engine bay; the supplied product guidance warns of swelling in high-heat locations. Plan a suitable cabin, trunk, or bed location with secure mounting and follow the manufacturer's ventilation and charging instructions.\u003c\/p\u003e\n\u003cp\u003eConfirm battery dimensions and accessory compatibility with the M5 bolt terminals before ordering additional terminals or busbars.\u003c\/p\u003e\n\u003cp\u003eAn additional battery does not replace adequate alternator output or correctly sized power and ground wiring. Use appropriate circuit protection and an AGM-compatible charging setup, and confirm compatibility with existing batteries and the vehicle's charging system.\u003c\/p\u003e\n\u003ch3\u003eLocal Installation in Killeen, Texas\u003c\/h3\u003e\n\u003cp\u003eBest Auto Sound \u0026amp; Security offers local installation at our Killeen, Texas shop. We can help assess your audio system's electrical needs, review battery placement and charging compatibility, and plan power wiring and fuse protection. Installation labor is quoted separately.\u003c\/p\u003e","brand":"DS18","offers":[{"title":"Default Title","offer_id":67779888775281,"sku":null,"price":374.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/4884\/5937\/files\/Screenshot_21-10-2026_115432_ds18.com.jpg?v=1792601691"},{"product_id":"sk-bt18","title":"Shuriken SK-BT18 12V 18Ah Compact AGM Power Cell","description":"\u003ch2\u003eShuriken SK-BT18 12V 18Ah Compact AGM Power Cell\u003c\/h2\u003e\n\u003cp\u003eAdd reserve capacity to your mobile electronics installation without making room for a full-size battery. The Shuriken SK-BT18 combines a compact footprint with 12-volt AGM technology, 18Ah capacity, and M5 threaded posts for your power connections.\u003c\/p\u003e\n\u003ch3\u003eCompact Reserve Power for Car Audio\u003c\/h3\u003e\n\u003cp\u003eThe SK-BT18 is listed with a 500W system-support rating and low internal resistance for mobile electronics applications. That rating is not amplifier output or a guarantee against voltage drop. Match battery capacity to your equipment's current demand, charging system, wiring, and intended listening time.\u003c\/p\u003e\n\u003ch3\u003eFeatures and Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: Shuriken\u003c\/li\u003e\n\u003cli\u003eModel: SK-BT18\u003c\/li\u003e\n\u003cli\u003eNominal voltage: 12V\u003c\/li\u003e\n\u003cli\u003eCapacity: 18Ah\u003c\/li\u003e\n\u003cli\u003eBattery technology: AGM (Absorbed Glass Mat)\u003c\/li\u003e\n\u003cli\u003eListed system-support rating: 500W\u003c\/li\u003e\n\u003cli\u003eCompact reserve power cell with low internal resistance\u003c\/li\u003e\n\u003cli\u003eConstructed with virgin lead\u003c\/li\u003e\n\u003cli\u003eListed for mounting in any position\u003c\/li\u003e\n\u003cli\u003eThreaded post size: M5\u003c\/li\u003e\n\u003cli\u003eWidth: 7.14 inches (181mm)\u003c\/li\u003e\n\u003cli\u003eHeight: 6.5 inches (165mm)\u003c\/li\u003e\n\u003cli\u003eDepth: 3 inches (76mm)\u003c\/li\u003e\n\u003cli\u003eListed battery weight: 12 lb (5.5kg)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePlan Your Battery Installation\u003c\/h3\u003e\n\u003cp\u003eMeasure the available space and allow clearance for terminals, wiring, and secure mounting. Follow the manufacturer's installation and charging instructions, protect terminals from accidental contact, and use appropriate circuit protection. Confirm compatibility with your vehicle's charging system and any existing batteries.\u003c\/p\u003e\n\u003cp\u003eAdditional battery reserve does not replace adequate alternator output or correctly sized amplifier power and ground wiring. Use charging equipment suitable for AGM batteries.\u003c\/p\u003e\n\u003ch3\u003eLocal Installation in Killeen, Texas\u003c\/h3\u003e\n\u003cp\u003eBest Auto Sound \u0026amp; Security offers local installation at our Killeen, Texas shop. We can help assess your electrical needs, check battery placement, and plan charging connections, wiring, and fuse protection. Installation labor is quoted separately.\u003c\/p\u003e","brand":"Shuriken","offers":[{"title":"Default Title","offer_id":67779989176433,"sku":null,"price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/4884\/5937\/files\/Screenshot_21-10-2026_123345_www.metraonline.com.jpg?v=1792604164"},{"product_id":"sptg1","title":"Stinger SPTG1 12V Battery \u0026 Charging System Tester","description":"\u003ch2\u003eCheck Battery Health Before Replacing Parts\u003c\/h2\u003e\n\u003cp\u003eA slow crank or electrical problem doesn't always mean the battery needs replacing. The \u003cstrong\u003eStinger SPTG1 Battery Conductance Tester\u003c\/strong\u003e helps evaluate a 12V lead-acid battery and check the vehicle's starting and charging systems, giving you useful information before you start swapping components.\u003c\/p\u003e\n\u003ch3\u003eThree Diagnostic Test Modes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery test:\u003c\/strong\u003e Analyze battery voltage, cold-cranking capability, resistance, and overall battery condition using conductance technology.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarting-system test:\u003c\/strong\u003e Evaluate cranking performance to help investigate starting problems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging-system test:\u003c\/strong\u003e Check charging performance to help identify issues requiring further diagnosis.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications and Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \/ model:\u003c\/strong\u003e Stinger SPTG1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntended applications:\u003c\/strong\u003e 12V automotive, marine, and powersports lead-acid batteries; 12V vehicle starting and charging systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListed battery-capacity measurement range:\u003c\/strong\u003e 30–200Ah\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage measurement range:\u003c\/strong\u003e 7–30V DC; this does not establish compatibility with 24V vehicle-system testing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest connections:\u003c\/strong\u003e Double-conductor Kelvin clamps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower-up:\u003c\/strong\u003e Powers on when properly connected to the battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse the Correct Battery Rating\u003c\/h3\u003e\n\u003cp\u003eSelect the appropriate rating standard and enter the battery's labeled rating before testing. Incorrect settings can produce misleading pass\/fail results. A discharged battery may need to be charged according to its manufacturer's instructions and retested before deciding it needs replacement. Batteries below 7V will not test properly.\u003c\/p\u003e\n\u003cp\u003eThis is a diagnostic conductance tester, not a battery charger or jump starter. Do not assume compatibility with lithium batteries. Follow the supplied instructions and compare charging results with the vehicle manufacturer's specifications.\u003c\/p\u003e\n\u003ch3\u003eLocal Help in Killeen, Texas\u003c\/h3\u003e\n\u003cp\u003eBest Auto Sound \u0026amp; Security offers local installation for car-audio and charging-system upgrades in Killeen, Texas. Call 254-213-0501 for help planning your system. Installation and any additional parts are quoted separately.\u003c\/p\u003e","brand":"Stinger","offers":[{"title":"Default Title","offer_id":67877283692657,"sku":null,"price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/4884\/5937\/files\/Screenshot_27-10-2026_191323_www.stingerdealer.com.jpg?v=1793146451"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0684\/4884\/5937\/collections\/charging-system-upgrades-collection-image-featuring-batteries-an-alternator-and-battery-isolators.png?v=1792602222","url":"https:\/\/12volttoys.com\/collections\/charging-system-upgrades.oembed","provider":"Best Auto Sound \u0026 Security","version":"1.0","type":"link"}