{"product_id":"the-reserve-cell-18v-battery-for-milwaukee-m18-tools","title":"The Reserve Cell | 18V Lithium-Ion Battery Pack for Milwaukee M18 Tools, 5.0 to 9.0 Ah","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eEvery cordless platform lives or dies by how many charged packs you own. One battery means stopping work to wait. Three means the drill, the impact driver, and the saw keep running through a job, and the trade becomes cost per pack rather than brand loyalty.\u003c\/p\u003e\n\u003cp\u003eThis is a replacement pack, not an original Milwaukee product. It is built to the M18 footprint at 18 volts nominal, offered in 5.0, 6.0, and 9.0 amp hour capacities, and it is designed to fit the same tools and chargers across the M18 range. The board inside includes balance detection across the cells and a multi layer protection circuit for overcharge, over discharge, over current, and short circuit, which is what keeps a lithium pack from becoming a liability in a truck bed. The housing carries CE, FCC, RoHS, UL, and KC marks.\u003c\/p\u003e\n\u003cp\u003eThe honest question with any replacement pack is whether it holds capacity after a season of cycling. That comes down to the cells and the board, so this page names both rather than leaving them to the label. Higher capacity means longer runtime and more weight in the hand, so a 5.0 Ah pack is often the better daily choice and the 9.0 Ah belongs on the saw that runs continuously.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eRuntime is not a feature. It is the difference between finishing and coming back.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #eeeeee;\"\u003e\n\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n\u003cli style=\"padding: 10px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e 18 volt nominal lithium-ion packs built to the M18 tool and charger footprint.\u003c\/li\u003e\n\u003cli style=\"padding: 10px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Capacities of 5.0, 6.0, and 9.0 amp hours for different runtime and weight trade offs.\u003c\/li\u003e\n\u003cli style=\"padding: 10px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Balance detection across the cell group keeps the pack from drifting out of balance.\u003c\/li\u003e\n\u003cli style=\"padding: 10px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Multi layer protection board against overcharge, over discharge, over current, and short circuit.\u003c\/li\u003e\n\u003cli style=\"padding: 10px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Certified to CE, FCC, RoHS, UL, and KC standards.\u003c\/li\u003e\n\u003cli style=\"padding: 10px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e No memory effect, so a partially used pack can go straight back on the charger.\u003c\/li\u003e\n\u003cli style=\"padding: 10px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Available as single packs or as multi pack and charger bundles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-specs\" style=\"margin-top: 30px;\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style: none; padding: 0;\"\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e viedakes\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBattery Type:\u003c\/strong\u003e Lithium-ion, rechargeable\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 18 V\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCapacity Options:\u003c\/strong\u003e 5.0 Ah, 6.0 Ah, 9.0 Ah\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCompatible Platform:\u003c\/strong\u003e Milwaukee M18 tools and chargers\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eReplaces Part Numbers:\u003c\/strong\u003e 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1828, 48-11-1840, 48-11-1850, 48-59-181\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eAdditional Cross Reference:\u003c\/strong\u003e 48-11-1822, 48-11-1841, 48-11-1852, 48-59-1850, 4932352071, 4932430063\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBattery Codes:\u003c\/strong\u003e C18B, Li18, M18, M18B, M18B2, M18B4, M18BX, XC\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Balance detection, overcharge, over discharge, over current, short circuit\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE, FCC, RoHS, UL, KC\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eMemory Effect:\u003c\/strong\u003e None\u003c\/li\u003e\n\u003cli style=\"padding: 9px 0; border-bottom: 1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Replacement battery, not manufactured by Milwaukee\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-applications\" style=\"margin-top: 30px;\"\u003e\n\u003ch3\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp\u003eTrades running an M18 platform who want enough packs to keep two tools live at once; workshops that keep a spare pack per bench so a drill never sits idle; and anyone whose original pack has reached the end of its cycle life but whose tools are still working perfectly well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-faq\" style=\"margin-top: 30px;\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this an original Milwaukee battery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, and the listing says so plainly. It is a replacement pack built to the M18 footprint that fits Milwaukee M18 tools and chargers. Milwaukee is a trademark of its owner and this product is not affiliated with or manufactured by them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will it fit my M18 drill and my charger?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt uses the M18 connection, so it fits M18 tools and M18 chargers. If your tool is a different voltage platform, this pack is not the right fit, so confirm the platform before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which capacity should I choose?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA 5.0 Ah pack is the sensible daily choice in a drill or driver, balancing runtime against weight. The 9.0 Ah pack suits saws and grinders that run continuously.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the protection circuit actually there?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The board carries balance detection across the cells plus protection against overcharge, over discharge, over current, and short circuit, which is what protects both the pack and the tool.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these batteries develop a memory effect?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Lithium-ion does not have the memory behaviour of older nickel chemistries, so a pack you topped up after ten minutes of drilling can go back on the charger without harm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom: 16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long does a charge last in storage?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eLithium packs self discharge slowly. Store them between roughly 40 and 60 percent charge in a cool dry place and top up before a job rather than leaving them full on a shelf for months.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-promise\" style=\"margin-top: 30px; padding: 18px 20px; background: #f8f8f6;\"\u003e\n\u003ch3 style=\"margin-top: 0;\"\u003eThe EastSupplier Promise\u003c\/h3\u003e\n\u003cp\u003eEastSupplier states that this is a replacement battery rather than an original, and lists the part numbers it cross references, because a pack that does not click into the tool is useless. Check your platform and part number against this page before ordering. Returns apply in original condition.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-gallery\" style=\"margin-top: 30px; text-align: center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sc75cbbd5742b40f8872bbc8e71097c5bj.webp?v=1772938653\" alt=\"The Reserve Cell\" style=\"max-width: 100%; height: auto; margin-bottom: 12px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S963a134885b04bf4991786e63910aeddI.webp?v=1772938654\" alt=\"The Reserve Cell\" style=\"max-width: 100%; height: auto; margin-bottom: 12px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S0f711b5280d94971b5fc54bc287b2636D.webp?v=1772938654\" alt=\"The Reserve Cell\" style=\"max-width: 100%; height: auto; margin-bottom: 12px; display: block;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S7d1584eb67d44bae9a1f8f93fb8bc81eR.webp?v=1772938654\" alt=\"The Reserve Cell\" style=\"max-width: 100%; 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