{"product_id":"the-rack-reserve-rear-rack-ebike-battery","title":"The Rack Reserve | Rear-Rack eBike Battery in 36V 21Ah and 72V LG","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe battery decides how far the ride goes.\u003c\/strong\u003e Every conversation about electric bikes eventually reduces to one component. Motors are rated, controllers are tuned, frames are painted, and then the battery determines whether the bike is a toy or a vehicle. A rear-rack pack answers the practical question that frame-mounted packs cannot: where does the capacity go when the triangle is already full.\u003c\/p\u003e\n\u003cp\u003eThis pack ships in two configurations. The 36V 21Ah version suits commuter and cargo builds that run moderate assist levels over long distances, and the 72V 21Ah LG-cell version feeds high-voltage mid-drive systems where torque delivery matters more than range anxiety. Both mount on a rear rack, which leaves the frame free for a larger triangle bag, a second pack in parallel, or nothing at all.\u003c\/p\u003e\n\u003cp\u003eThe cells are grade A sourced from official channels, matched and assembled into a pack with a multi-protection BMS that watches over-current, over-voltage, under-voltage, short circuit and temperature. The case is aluminium rather than plastic, sealed to IP65, and carries a USB port for charging a phone or a Bluetooth speaker plus an LED tail light that runs from the pack itself. That tail light is a small detail with a large consequence on an unlit road.\u003c\/p\u003e\n\u003cp\u003eService is engineered rather than promised. A CE charger with an inline fuse ships with the pack, the assembly carries CE, UL and RoHS reports, the shipment carries MSDS and UN38.3 documentation for air and sea freight, and an 18-month warranty is backed by service points in Germany, Belgium, the UK, Poland, the US, Canada and Australia. A battery is the one part of an e-bike that cannot be repaired by a local shop, so where it was built and who stands behind it matters as much as the amp hours.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eRange is not a specification. It is the shape of your day.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr style=\"margin:24px 0;border:0;border-top:1px solid #e8e8e8;\"\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eWhat the Rack Reserve Actually Does\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eTwo voltage tiers\u003c\/strong\u003e covering 36V 21Ah commuter builds and 72V 21Ah LG-cell high-torque mid-drive systems.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eRear-rack mounting\u003c\/strong\u003e that frees the frame triangle for luggage, a second pack or nothing at all.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eGrade A matched cells\u003c\/strong\u003e from official channels, never salvaged or re-wrapped stock.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eMulti-protection BMS\u003c\/strong\u003e guarding over-current, over-voltage, under-voltage, short circuit and temperature.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eIP65 aluminium enclosure\u003c\/strong\u003e that resists impact and weather far better than a plastic shell.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003eUSB charging port and integrated LED tail light\u003c\/strong\u003e running directly from the pack.\u003c\/li\u003e\n\u003cli style=\"padding:11px 0;border-bottom:1px solid #eee;\"\u003e✦ \u003cstrong\u003e18-month warranty\u003c\/strong\u003e with service points in Germany, Belgium, the UK, Poland, the US, Canada and Australia.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eConfiguration A:\u003c\/strong\u003e 36V 21Ah with rear rack\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eConfiguration B:\u003c\/strong\u003e 72V 21Ah with rear rack, LG cells\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eCell type:\u003c\/strong\u003e 21700 \/ 18650 grade A lithium, matched and assembled\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eBMS:\u003c\/strong\u003e multi-protection with temperature sensing\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e aluminium case, IP65 rated\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eExtras:\u003c\/strong\u003e USB charging port, LED tail light, LED power indicator\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eCharger:\u003c\/strong\u003e CE charger with inline fuse included\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eCertification:\u003c\/strong\u003e CE, UL and RoHS reports, MSDS and UN38.3 shipping documentation\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 18 months\u003c\/li\u003e\n\u003cli style=\"padding:9px 0;border-bottom:1px solid #eee;\"\u003e\n\u003cstrong\u003eDispatch:\u003c\/strong\u003e Germany warehouse\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eWhere It Belongs\u003c\/h3\u003e\n\u003cp\u003eCargo bike builders use the rear rack position because the frame triangle is occupied by a reinforced cargo structure. Commuters with long, flat routes choose the 36V 21Ah pack for a day of riding without carrying the charger. Conversion kits running 72V mid-drives need the high-voltage pack for torque delivery on climbs. Rental and fleet operators value the aluminium case and IP65 sealing, since a fleet battery lives outdoors and gets handled by people who did not buy it. Tinkerers who want a second pack in parallel appreciate a rack mount that does not force them to choose between capacity and a frame bag.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eQuestions Buyers Ask Before Ordering\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know which voltage matches my bike?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Check the controller and motor rating on the original pack or the motor label. A 36V system will not accept a 72V pack without replacing the controller and motor, and a 72V controller may refuse to start on 36V. Match the pack to the system you already have rather than the other way around.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is a rear rack pack safe on a bike that carries loads?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, provided the rack is rated for the weight. The pack adds mass behind the rear axle, which affects handling more than braking, so keep the total load within the rack rating and check that your rack is bolted to the frame rather than to a seatpost clamp.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the IP65 rating actually cover?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Dust-tight and protected against water jets from any direction. Rain, puddles and hose spray are fine. Submersion is not, and neither is a pressure washer aimed at the seams, which is how most waterproof claims get tested to failure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I charge a phone from the pack while riding?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The USB port runs from the pack, so yes. Draw is small relative to the pack capacity, and the port is useful for a phone running navigation on a long ride. It will not charge a laptop.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How long does a full charge take?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The included CE charger brings a 21Ah pack to full in roughly six to eight hours depending on the state of discharge. Overnight charging is the normal pattern. Faster charging shortens cell life, so the standard charger is the better default.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:16px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is there a warranty claim path outside the EU?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes. Service points cover the US, Canada and Australia as well as Germany, Belgium, the UK and Poland. Claims are handled with return, repair or replacement, and video technical support is available before a return is authorised.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\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\/S181172ce49244bf8a5e466a08e2f22dcm.webp?v=1768964572\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S2f07d400980743beabedcd287fab5602R.webp?v=1768964571\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sae68cb56cb944159b3a13d3180e84305t.webp?v=1768964571\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sf954cea4f53b4ee48607c8b7d0ee757bh.webp?v=1768964572\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sf6e3c2f5abad48019178b0f4684ad96bi.webp?v=1768964571\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S1500994d189049a9b2d283d3a1466bfb3.webp?v=1768964572\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S192290def8894ef7b2c7824ece775583c.webp?v=1768964572\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sa29bf98546854db3b75f05b5a53a2e11o.webp?v=1768964572\" alt=\"Rear rack eBike battery pack\" style=\"max-width:100%;margin:8px auto;border-radius:6px;display:block;\" loading=\"lazy\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"Product\",\n\"name\":\"The Rack Reserve | Rear-Rack eBike Battery in 36V 21Ah and 72V LG\",\"sku\":\"UPP-RACK-36-72\",\"brand\":{\"@type\":\"Brand\",\"name\":\"UnitPackPower\"},\n\"description\":\"Rear-rack eBike battery in 36V 21Ah and 72V 21Ah LG-cell configurations with IP65 aluminium case, multi-protection BMS and USB port.\",\n\"url\":\"https:\/\/eastsupplier.com\/products\/the-rack-reserve-rear-rack-ebike-battery\",\n\"image\":[\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S181172ce49244bf8a5e466a08e2f22dcm.webp?v=1768964572\"],\n\"offers\":{\"@type\":\"Offer\",\"url\":\"https:\/\/eastsupplier.com\/products\/the-rack-reserve-rear-rack-ebike-battery\",\"priceCurrency\":\"USD\",\"price\":\"711.24\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\",\"seller\":{\"@type\":\"Organization\",\"name\":\"EastSupplier\"}},\n\"manufacturer\":{\"@type\":\"Organization\",\"name\":\"UnitPackPower\"}}\n\u003c\/script\u003e","brand":"East Supplier Platform","offers":[{"title":"36V21Ah with Rack \/ GERMANY","offer_id":48381950787807,"sku":"1005006646524360-36V21Ah with Rack-GERMANY","price":582.58,"currency_code":"USD","in_stock":true},{"title":"72V21Ah LG with Rack \/ GERMANY","offer_id":48381951049951,"sku":"1005006646524360-72V21Ah LG with Rack-GERMANY","price":1479.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S181172ce49244bf8a5e466a08e2f22dcm.webp?v=1768964572","url":"https:\/\/eastsupplier.com\/pt-es\/products\/the-rack-reserve-rear-rack-ebike-battery","provider":"EastSupplier Platform","version":"1.0","type":"link"}