{"product_id":"slinger-bag-tennis-ball-machine-battery-rebuild","title":"Slinger Bag Tennis Ball Machine Battery Rebuild","description":"\u003cp\u003eRestore your original Slinger Bag battery instead of waiting for a replacement battery to become available.\u003c\/p\u003e\n\u003cp\u003eThis mail-in Battery Revival service is designed for the \u003cstrong\u003eSlinger Bag KMD-SB-4660 rechargeable lithium-ion battery\u003c\/strong\u003e, originally rated at \u003cstrong\u003e14.4V, 6.6Ah, and 95Wh\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe original battery uses a 12-cell, 4S3P lithium-ion configuration. During the rebuild, we replace all 12 internal cells with new 3000mAh lithium-ion cells, increasing the estimated capacity from 6.6Ah to approximately 9Ah.\u003c\/p\u003e\n\u003ch3\u003eRebuild Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOriginal voltage: 14.4V nominal\u003c\/li\u003e\n\u003cli\u003eFull-charge voltage: 16.8V\u003c\/li\u003e\n\u003cli\u003eOriginal capacity: 6.6Ah \/ 95Wh\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eUpgraded capacity: approximately 9Ah \/ 130Wh\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003eCell configuration: 4S3P\u003c\/li\u003e\n\u003cli\u003eCell count: 12\u003c\/li\u003e\n\u003cli\u003eCell format: 18650 lithium-ion\u003c\/li\u003e\n\u003cli\u003eOriginal model: KMD-SB-4660\u003c\/li\u003e\n\u003cli\u003eStandard charging current: 2A\u003c\/li\u003e\n\u003cli\u003eContinuous discharge rating: up to 15A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Is Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRemoval of the original battery cells\u003c\/li\u003e\n\u003cli\u003eInstallation of 12 new matched lithium-ion cells\u003c\/li\u003e\n\u003cli\u003eNew nickel connections and protective insulation\u003c\/li\u003e\n\u003cli\u003eReassembly inside the original battery housing\u003c\/li\u003e\n\u003cli\u003eCharging and discharge testing\u003c\/li\u003e\n\u003cli\u003eFinal voltage and operational inspection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe reuse the original housing, mounting bracket, connectors, wiring, and compatible battery electronics after inspection.\u003c\/p\u003e\n\u003ch3\u003eImportant Service Information\u003c\/h3\u003e\n\u003cp\u003eThis listing is for a \u003cstrong\u003ebattery rebuild service\u003c\/strong\u003e, not a replacement battery. You must send your original Slinger Bag battery to United Lithium Solutions.\u003c\/p\u003e\n\u003cp\u003eThe listed price covers complete cell replacement when the original housing, connectors, wiring, and battery management electronics remain reusable. Damage to the BMS, charging port, discharge connector, housing, or wiring may require an additional quote.\u003c\/p\u003e\n\u003cp\u003eFinal capacity may vary slightly based on cell availability, testing results, and the usable internal space of the original housing.\u003c\/p\u003e","brand":"Silnger","offers":[{"title":"Default Title","offer_id":43135672909886,"sku":"ULS-BRC-SLINGER-144V-9AH","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0648\/9289\/5294\/files\/ChatGPTImageJul30_2026_02_54_13PM.png?v=1785448461","url":"https:\/\/unitedlithium.us\/products\/slinger-bag-tennis-ball-machine-battery-rebuild","provider":"United Lithium Solutions","version":"1.0","type":"link"}