{"product_id":"drl-racer-4s-hd-zero-bnf-used-drl-5s-battery","title":"DRL Racer 4s - HD Zero BNF + USED DRL 5s Battery","description":"\u003cp\u003e\u003cstrong\u003eDRL Racer 4s - HDZero\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eAn original DRL Racer4s, upgraded with an HDZero digital video system, an ExpressLRS receiver, and updated Betaflight firmware. This configuration pairs the Racer4s platform with equipment you can use with your own compatible radio and goggles.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eInstalled Hardware \u0026amp; Firmware\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe original proprietary DRL receiver and video transmitter have been removed and replaced with:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eRadioMaster XR1 ELRS receiver\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, updated to ExpressLRS 4.x.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eHDZero Race V2 video transmitter.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eHDZero Nano 90 V2 camera.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe flight controller has been flashed with \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eBetaflight 26.1 using our custom HOAR4s target\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. The HDZero\/Betaflight on-screen display is fully functional. Smartaudio style commands are not currently working but stick commands and OSD for channel changes works fine.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eImportant: Updated Flight Configuration\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis firmware upgrade replaces the original DRL flight-controller configuration. \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eThe original tune, rate profiles, and settings are no longer installed.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Expect the drone’s flight characteristics and control feel to differ from its original DRL configuration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe original DRL Betaflight 3.6 configuration dump will be available in our technical documentation for reference or for owners interested in returning to the original firmware and configuration. Restoring it requires the corresponding compatible firmware; the original dump should not be applied directly to Betaflight 26.1.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat’s Included\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eDRL Racer4s with the installed HDZero video system and ELRS receiver.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eUpdated firmware and configuration as described above.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eOne set of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e7-inch race propellers\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eInstructions for cycling through the available LED colors.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eA battery is not included.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e You will also need a compatible ExpressLRS transmitter or transmitter module and an HDZero-compatible viewing setup.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eLED Colors \u0026amp; Optional Button\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe drone’s LED colors can be changed without adding an external button, but doing so requires access to the internal controls. Instructions are included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eFor easier access, \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eadd the optional LED color-change button to your cart separately\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e if you would like one installed.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eCondition \u0026amp; Pre-Shipment Testing\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is a converted, previously used DRL drone. Cosmetic wear may be present.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eBefore shipment, each drone is:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003ePowered on to confirm LED operation.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eChecked to confirm the receiver is configured.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTest-hovered to verify basic flight operation.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe test hover is a basic operational check. You may still want to adjust rates and other flight settings to suit your preferences before race use.\u003cbr\u003e\u003cbr\u003eExpected to ship: October 1st\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWatch the launch video for a closer look at the drone, the conversion, and additional details:\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003ehttps:\/\/www.youtube.com\/watch?v=6tlr1lD9flw\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eUSED DRL Racer 4 5s Battery Pack\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThis is the original battery pack used in the DRL Racer4s. The label lists it as a \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2300mAh 5S pack\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, although based on its size, weight, and performance, I suspect that capacity rating is generous. Actual capacity has not been verified.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eLet’s be clear: \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ethese batteries are VERY used, and you’re paying for rarity—not fresh cells or impressive performance.\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e This is the only lot I was able to secure for the store. If the price doesn’t make sense to you, I completely understand. I’m happy to keep them for myself.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cstrong\u003e\u003cspan\u003eWhat you should know:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eCondition:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Heavily used; what I would describe as fair condition.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eTesting:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Packs are at storage voltage, but I have not cycled or capacity-tested them. Remaining life and performance are unknown.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eNo performance guarantee:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e You could receive a weak or nonfunctional pack.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eBattery safety:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e These used packs may fail during charging or use, including catching fire. Inspect before use, use an appropriate balance charger, and never charge unattended. Do not charge a swollen or damaged pack.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003ePurchase limit:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e One battery per Racer4s purchased in the same order, while supplies last. We have fewer batteries than drones.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eShipping:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ground shipping only.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eSold as is.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003ePlease understand the condition and uncertainty before purchasing. These are original DRL packs with a racing history—not new batteries.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eFirmware \u0026amp; Files:\u003c\/strong\u003e\u003cbr\u003ehttps:\/\/drive.google.com\/drive\/folders\/1eaGZFEpuia18d4xntFWQE_yKxnLlaL5y?usp=sharing\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Heart of America FPV","offers":[{"title":"Default Title","offer_id":44369080942670,"sku":null,"price":884.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/9444\/7438\/files\/331ba111-e13e-4960-be3f-c8c8697d23fa.jpg?v=1789624198","url":"https:\/\/heartofamericafpv.com\/products\/drl-racer-4s-hd-zero-bnf-used-drl-5s-battery","provider":"Heart of America FPV","version":"1.0","type":"link"}