{"id":856467,"date":"2026-07-19T17:16:36","date_gmt":"2026-07-19T17:16:36","guid":{"rendered":"https:\/\/elektrobox.ch\/?page_id=856467"},"modified":"2026-07-19T17:17:10","modified_gmt":"2026-07-19T17:17:10","slug":"wireless-charging-xbox-controller","status":"publish","type":"page","link":"https:\/\/elektrobox.ch\/index.php\/wireless-charging-xbox-controller\/","title":{"rendered":"wireless-charging-xbox-controller"},"content":{"rendered":"\n<!--\n  ElektroBox Project Page\n  Wireless-Charging Xbox Controller\n\n  Paste this code into a WordPress \"Custom HTML\" block.\n  It uses the existing ElektroBox project-page CSS classes.\n\n  Replace:\n  1. The hero\/final image URLs\n  2. The step image URLs\n\n-->\n\n<div class=\"ebox-project-page ebox-project-page--xbox-wireless\">\n\n  <section class=\"ebox-hero ebox-hero-with-image\">\n    <div class=\"ebox-hero-text\">\n      <span class=\"ebox-hero-label\">Xbox Controller Modification<\/span>\n      <h1>Wireless-Charging Xbox Controller<\/h1>\n\n      <p>\n        A controller is most useful when it is already charged and ready to use. In this project, I modified an Xbox Series X|S controller by installing a rechargeable lithium battery, a wireless-charging receiver, and a regulated 3-volt power supply inside the original housing.\n      <\/p>\n\n      <p>\n        The finished prototype powers the controller normally and begins charging when it is placed on a compatible wireless-charging pad. The current circuit uses separate boost and buck converters, proving the concept while leaving room for a more efficient future revision.\n      <\/p>\n    <\/div>\n\n    <div class=\"ebox-hero-image\">\n      <img decoding=\"async\" src=\"https:\/\/elektrobox.ch\/wp-content\/uploads\/2026\/07\/wchero.png\" alt=\"Modified Xbox controller with integrated wireless charging\">\n    <\/div>\n  <\/section>\n\n  <div class=\"ebox-video-card\">\n    <div class=\"ebox-video-frame\">\n      <iframe src=\"https:\/\/www.youtube.com\/embed\/GR-O_S4bICk\" title=\"Wireless-Charging Xbox Controller tutorial\" loading=\"lazy\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\"><\/iframe>\n    <\/div>\n  <\/div>\n\n  <h2>1. Project Goal<\/h2>\n\n  <p>\n    The goal was to replace disposable AA batteries with an internal rechargeable battery that can be charged without connecting a cable to the controller. When the controller is placed on a wireless-charging pad, the receiver coil transfers power to the charging circuit and recharges the internal battery.\n  <\/p>\n\n  <div class=\"ebox-card-grid\">\n    <div class=\"ebox-info-card\">\n      <strong>Rechargeable power<\/strong>\n      A single-cell lithium battery replaces the two disposable AA batteries.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Wireless charging<\/strong>\n      A receiver coil inside the battery cover collects energy from a compatible charging pad.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Stable controller voltage<\/strong>\n      A DC-DC conversion stage supplies approximately 3 volts to the controller.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Serviceable design<\/strong>\n      A removable connector allows the battery cover and charging coil to be disconnected during maintenance.\n    <\/div>\n  <\/div>\n\n  <div class=\"ebox-warning\">\n    <strong>Battery-safety warning:<\/strong>\n    Lithium-ion and lithium-polymer cells can be damaged by short circuits, overcharging, deep discharge, puncturing, overheating, or incorrect polarity. Use a protected cell or a suitable protection circuit, insulate all exposed connections, and never use a damaged or swollen battery.\n  <\/div>\n\n  <h2>2. Why the Controller Cannot Use the Battery Directly<\/h2>\n\n  <p>\n    A standard Xbox controller normally uses two AA batteries connected in series. With approximately 1.5 volts per cell, the controller receives around 3 volts.\n  <\/p>\n\n  <p>\n    A rechargeable single-cell lithium battery behaves differently. Its nominal voltage is approximately 3.7 volts, and a fully charged cell can reach approximately 4.2 volts. Connecting this voltage directly to the controller would exceed the normal AA-battery supply voltage.\n  <\/p>\n\n  <table class=\"ebox-table\">\n    <thead>\n      <tr>\n        <th>Power source<\/th>\n        <th>Typical voltage<\/th>\n        <th>Suitable for direct connection?<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Two alkaline AA batteries<\/td>\n        <td>Approximately 3.0 V when new<\/td>\n        <td>Yes, this is the controller&#8217;s normal battery configuration.<\/td>\n      <\/tr>\n      <tr>\n        <td>Single-cell lithium battery<\/td>\n        <td>Approximately 3.0 V to 4.2 V<\/td>\n        <td>No. The voltage must be regulated before it reaches the controller.<\/td>\n      <\/tr>\n      <tr>\n        <td>Regulated converter output<\/td>\n        <td>Approximately 3.0 V<\/td>\n        <td>Yes, after polarity and voltage have been verified.<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n\n  <div class=\"ebox-note\">\n    <strong>Undervoltage protection:<\/strong>\n    The battery must not be discharged too deeply. Use a DC-DC converter with a suitable low-voltage cutoff, a protected battery, or a separate protection circuit. For this type of single-cell lithium system, the load should stop before the cell falls below the safe minimum specified by the battery manufacturer.\n  <\/div>\n\n  <h2>3. Circuit Overview<\/h2>\n\n  <p>\n    The prototype contains two connected electrical paths. The charging path transfers energy from the wireless receiver to the battery. The power path converts the battery voltage into a stable supply for the controller.\n  <\/p>\n\n  <div class=\"ebox-flow\">\n    <div class=\"ebox-flow-step\">Wireless-charging pad energizes the receiver coil<\/div>\n    <div class=\"ebox-flow-step\">Receiver and charging circuit recharge the single-cell battery<\/div>\n    <div class=\"ebox-flow-step\">Battery supplies the DC-DC conversion circuit<\/div>\n    <div class=\"ebox-flow-step\">Boost converter raises the battery voltage to 5 V<\/div>\n    <div class=\"ebox-flow-step\">Buck converter regulates the voltage down to 3 V<\/div>\n    <div class=\"ebox-flow-step\">Controller receives the regulated 3 V supply<\/div>\n  <\/div>\n\n  <div class=\"ebox-warning\">\n    <strong>Charging-module warning:<\/strong>\n    A wireless receiver that produces 5 volts is not automatically a lithium-battery charger. Use a module explicitly designed for charging a single-cell lithium-ion or lithium-polymer battery with the correct charging profile and termination voltage.\n  <\/div>\n\n  <h2>4. Required Components<\/h2>\n\n  <p>For the working prototype, I used the following components:<\/p>\n\n  <div class=\"ebox-card-grid\">\n    <div class=\"ebox-info-card\">\n      <strong>Xbox controller<\/strong>\n      Xbox Series X|S controller with removable battery cover.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Wireless-charging receiver<\/strong>\n      Receiver coil and electronics suitable for the selected battery-charging arrangement.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Rechargeable battery<\/strong>\n      Single-cell lithium-ion or lithium-polymer battery with suitable capacity and physical dimensions.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Boost converter<\/strong>\n      Raises the battery voltage to approximately 5 volts for this prototype.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Buck converter<\/strong>\n      Reduces the boosted voltage to a stable 3-volt controller supply.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Protection<\/strong>\n      Protected battery, battery-protection board, or converter with suitable undervoltage shutdown.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Connections<\/strong>\n      Flexible wires, pin headers, removable connector, heat-shrink tubing, and insulation tape.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Tools<\/strong>\n      Soldering equipment, multimeter, plastic opening tool, rotary tool, small screwdriver, and double-sided tape.\n    <\/div>\n  <\/div>\n\n  <h2>5. Testing the Wireless-Charging Circuit<\/h2>\n\n  <div class=\"ebox-section-grid\">\n    <div>\n      <p>\n        Before modifying the controller, I tested the charging system separately. I connected the battery to the designated battery terminals of the charging receiver and placed the receiver coil on a wireless-charging pad.\n      <\/p>\n\n      <p>\n        The charging system activated and the battery began charging. Testing the circuit outside the controller made it easier to verify polarity, charging behavior, and component temperature before installation.\n      <\/p>\n\n      <p>\n        I currently use a standard wireless-charging pad. A future version could include a custom stand that holds the controller and aligns the coil automatically.\n      <\/p>\n    <\/div>\n\n    \n  <\/div>\n\n  <h2>6. Creating a Stable 3-Volt Supply<\/h2>\n\n  <p>\n    The buck converters available for this prototype require an input voltage of at least approximately 4.5 volts. Because a single lithium cell only provides approximately 3 to 4.2 volts, the buck converter could not be connected directly to the battery.\n  <\/p>\n\n  <p>\n    I therefore used a boost converter to raise the battery voltage to 5 volts. A second converter then reduced this voltage to a stable 3 volts for the controller.\n  <\/p>\n\n  <div class=\"ebox-note\">\n    <strong>Prototype limitation:<\/strong>\n    Converting the voltage twice creates additional power loss. A more efficient final version should use a suitable buck-boost converter that can generate a regulated 3-volt output directly across the battery&#8217;s usable voltage range.\n  <\/div>\n\n  <table class=\"ebox-table\">\n    <thead>\n      <tr>\n        <th>Measurement point<\/th>\n        <th>Measured voltage<\/th>\n        <th>Purpose<\/th>\n      <\/tr>\n    <\/thead>\n    <tbody>\n      <tr>\n        <td>Battery<\/td>\n        <td>Approximately 3.9 V during the test<\/td>\n        <td>Energy source for the complete circuit.<\/td>\n      <\/tr>\n      <tr>\n        <td>Boost-converter input<\/td>\n        <td>Approximately 3.9 V<\/td>\n        <td>Directly connected to the battery output.<\/td>\n      <\/tr>\n      <tr>\n        <td>Boost-converter output<\/td>\n        <td>Approximately 5.0 V<\/td>\n        <td>Provides sufficient input voltage for the buck converter.<\/td>\n      <\/tr>\n      <tr>\n        <td>Buck-converter output<\/td>\n        <td>Approximately 3.0 V<\/td>\n        <td>Regulated supply connected to the controller.<\/td>\n      <\/tr>\n    <\/tbody>\n  <\/table>\n\n  <h2>7. Completing and Verifying the Circuit<\/h2>\n\n  <p>\n    After connecting the charging and power-conversion stages, I measured the voltage at every point in the circuit. The final output remained close to 3 volts, so the prototype was ready for installation.\n  <\/p>\n\n  <p>\n    I temporarily disconnected the boards again because the final component positions and cable lengths depended on the available space inside the controller.\n  <\/p>\n\n  <div class=\"ebox-warning\">\n    <strong>Check before connection:<\/strong>\n    Measure the converter output with a multimeter before connecting it to the controller. Verify both voltage and polarity. A reversed connection or excessive voltage can permanently damage the controller.\n  <\/div>\n\n  <h2>8. Disassembling the Controller<\/h2>\n\n  <div class=\"ebox-section-grid\">\n    <div>\n      <p>\n        I first removed the side grips using a plastic opening tool. The battery-compartment sticker hides one of the housing screws, so I removed the sticker and then loosened the hidden screw together with the four remaining screws.\n      <\/p>\n\n      <p>\n        After all five screws were removed, the two housing sections could be carefully separated. Opening the housing slowly reduces the risk of damaging clips, wires, buttons, or internal components.\n      <\/p>\n    <\/div>\n\n\n  <\/div>\n\n  <h2>9. Modifying the Battery Compartment<\/h2>\n\n  <p>\n    The original AA-battery structure occupied too much space for the rechargeable battery and converter boards. I used a small rotary-tool saw to remove the internal section of the battery compartment.\n  <\/p>\n\n  <p>\n    I removed only the material required for the electronics and kept the mounting features used by the original battery cover. This allows the cover to remain securely attached after the modification.\n  <\/p>\n\n  <div class=\"ebox-warning\">\n    <strong>Mechanical warning:<\/strong>\n    Remove the battery and all loose electronics before cutting or grinding the housing. Wear eye protection, avoid damaging screw posts and clips, and clean all plastic dust before reassembly.\n  <\/div>\n\n\n\n  <h2>10. Preparing the Wireless-Charging Receiver<\/h2>\n\n  <p>\n    I added pin headers to the receiver board and installed a removable connector in the battery wiring. The charging coil remains attached to the battery cover, while the connector allows the cover to be separated from the controller during maintenance.\n  <\/p>\n\n  <p>\n    This arrangement prevents the coil wires from pulling directly on small solder joints whenever the battery cover is removed.\n  <\/p>\n\n  <div class=\"ebox-card-grid\">\n    <div class=\"ebox-info-card\">\n      <strong>Receiver board<\/strong>\n      Mounted inside the available battery-compartment space.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Charging coil<\/strong>\n      Positioned against the battery cover for good alignment with the charging pad.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Removable connector<\/strong>\n      Separates the cover and coil from the rest of the controller.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Strain relief<\/strong>\n      Prevents movement of the cover from stressing the solder joints.\n    <\/div>\n  <\/div>\n\n  <h2>11. Connecting the Controller<\/h2>\n\n  <p>\n    I soldered two wires to the controller&#8217;s battery power terminals and connected them to the regulated 3-volt output of the DC-DC circuit. The polarity was checked before soldering and verified again before the controller was powered.\n  <\/p>\n\n  <p>\n    The wires were routed away from buttons, screw posts, trigger mechanisms, and housing edges. Exposed solder joints were insulated to prevent accidental contact with the circuit boards or shielding.\n  <\/p>\n\n  <div class=\"ebox-note\">\n    <strong>Recommended practice:<\/strong>\n    Add an inline connector between the controller and converter output. This makes troubleshooting easier and allows the controller electronics to be disconnected without desoldering the power wires.\n  <\/div>\n\n  <h2>12. Installing the Electronics<\/h2>\n\n  <p>\n    I secured the converter boards with double-sided tape and checked that they could not move when the controller was handled. The battery was placed inside the modified compartment and connected to the converter input.\n  <\/p>\n\n  <p>\n    The wireless-charging receiver and coil were then connected to the battery. Before closing the housing, I confirmed that no wires were pinched and that the buttons, triggers, and battery cover still moved correctly.\n  <\/p>\n\n  <div class=\"ebox-flow\">\n    <div class=\"ebox-flow-step\">Insulate the converter boards and exposed solder joints<\/div>\n    <div class=\"ebox-flow-step\">Secure the boards so they cannot move inside the housing<\/div>\n    <div class=\"ebox-flow-step\">Install and secure the battery without bending or compressing it<\/div>\n    <div class=\"ebox-flow-step\">Connect the receiver, battery, converters, and controller<\/div>\n    <div class=\"ebox-flow-step\">Measure the final controller supply voltage again<\/div>\n    <div class=\"ebox-flow-step\">Close the housing and reinstall all five screws<\/div>\n  <\/div>\n\n  <h2>13. Final Test<\/h2>\n\n  <div class=\"ebox-final-box\">\n    <p>\n      The controller powers on normally and connects to the Xbox without any problems. When it is placed on the wireless-charging pad, the receiver activates and the internal battery begins charging.\n    <\/p>\n\n    <p>\n      The prototype successfully demonstrates the concept: the original controller can be powered from an internal rechargeable battery and recharged wirelessly without modifying its external charging port.\n    <\/p>\n\n    <p>\n      The main improvement for a future version would be replacing the separate boost and buck converters with one efficient buck-boost converter. A purpose-built charging stand could also improve coil alignment and make the controller easier to place correctly.\n    <\/p>\n\n    <div class=\"ebox-image-card\">\n      <img decoding=\"async\" src=\"https:\/\/elektrobox.ch\/wp-content\/uploads\/2026\/07\/wchero.png\" alt=\"Completed wireless-charging Xbox controller on a charging pad\" loading=\"lazy\">\n      <p class=\"ebox-caption\">Completed prototype charging on a compatible wireless-charging pad.<\/p>\n    <\/div>\n  <\/div>\n\n  <h2>14. Current Limitations and Future Improvements<\/h2>\n\n  <div class=\"ebox-card-grid\">\n    <div class=\"ebox-info-card\">\n      <strong>Single buck-boost converter<\/strong>\n      Replace the two-stage conversion circuit with a converter designed for a single lithium cell.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Lower standby current<\/strong>\n      Select converters with low quiescent current to reduce battery drain while the controller is not in use.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Custom charging stand<\/strong>\n      Build a stand that holds the controller securely and aligns the receiver coil with the transmitter.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Improved mounting<\/strong>\n      Use a compact custom PCB or printed carrier instead of mounting separate converter modules with tape.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Temperature monitoring<\/strong>\n      Confirm that the battery and charging electronics remain within their specified temperature limits.\n    <\/div>\n\n    <div class=\"ebox-info-card\">\n      <strong>Battery indication<\/strong>\n      Add a reliable way to monitor the actual battery state of charge or charging status.\n    <\/div>\n  <\/div>\n\n  <h2>15. Frequently Asked Questions<\/h2>\n\n  <div class=\"ebox-faq-list\">\n    <details>\n      <summary>Why not connect the lithium battery directly to the controller?<\/summary>\n      <div class=\"ebox-faq-content\">\n        <p>\n          A fully charged single-cell lithium battery can reach approximately 4.2 volts, while the controller is designed around a supply of roughly 3 volts from two AA batteries. A regulated converter keeps the controller supply within the intended range.\n        <\/p>\n      <\/div>\n    <\/details>\n\n    <details>\n      <summary>Why does the prototype use both a boost and a buck converter?<\/summary>\n      <div class=\"ebox-faq-content\">\n        <p>\n          The available buck converter required a higher input voltage than the battery could provide. The boost converter first raises the voltage to 5 volts, and the buck converter then reduces it to 3 volts. This works for testing but is less efficient than a suitable buck-boost converter.\n        <\/p>\n      <\/div>\n    <\/details>\n\n    <details>\n      <summary>Does every wireless-charging receiver safely charge a lithium battery?<\/summary>\n      <div class=\"ebox-faq-content\">\n        <p>\n          No. Some receivers only provide a regulated output, commonly 5 volts. A lithium battery requires a dedicated charging circuit with the correct constant-current\/constant-voltage charging profile, termination behavior, and protection.\n        <\/p>\n      <\/div>\n    <\/details>\n\n    <details>\n      <summary>Why is undervoltage protection necessary?<\/summary>\n      <div class=\"ebox-faq-content\">\n        <p>\n          If the controller continues drawing current after the battery reaches its safe minimum voltage, the cell can be over-discharged and permanently damaged. A protected cell, protection board, or converter with low-voltage shutdown prevents this.\n        <\/p>\n      <\/div>\n    <\/details>\n\n    <details>\n      <summary>Can the original battery cover still be removed?<\/summary>\n      <div class=\"ebox-faq-content\">\n        <p>\n          Yes. The charging coil is attached to the cover and connected through a removable plug. This allows the cover to be detached without pulling on the receiver-board solder joints.\n        <\/p>\n      <\/div>\n    <\/details>\n  <\/div>\n\n  <div class=\"ebox-final-box\">\n    <h2>Final Thoughts<\/h2>\n\n    <p>\n      This project shows how wireless charging, lithium-battery management, voltage conversion, and mechanical modification can be combined in one compact build. The prototype works, but battery safety and power-conversion efficiency are more important than simply fitting the components into the housing.\n    <\/p>\n\n    <p>\n      A future revision with a low-loss buck-boost converter, integrated protection, and a custom charging stand would make the modification cleaner and more practical for everyday use.\n    <\/p>\n\n\n  <\/div>\n\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Xbox Controller Modification Wireless-Charging Xbox Controller A controller is most useful when it is already charged and ready to use. In this project, I modified an Xbox Series X|S controller by installing a rechargeable lithium battery, a wireless-charging receiver, and a regulated 3-volt power supply inside the original housing. The finished prototype powers the controller [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-856467","page","type-page","status-publish","hentry"],"blocksy_meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Wireless Charging Xbox Controller \u2013 DIY Modification<\/title>\n<meta name=\"description\" content=\"Learn how I modified an Xbox Series X|S controller with a rechargeable lithium battery, wireless charging, and a regulated 3 V power supply\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/elektrobox.ch\/index.php\/wireless-charging-xbox-controller\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta 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