{"title":"Rechargeable light bulbs","description":"\u003cp\u003eA rechargeable light bulb gives light without a socket: charge it with a USB cable, screw it into an E27 or E14 base, and it lights up even when the socket has no power. The choice comes down to three things: the fitting on your light, the colour of the light, and the runtime stated on the product page.\u003c\/p\u003e\n\n\u003cnav\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"#principe\"\u003eHow a rechargeable light bulb works\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#sans-electricite\"\u003eLighting without electricity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#ou-installer\"\u003eWhere to install it in the home\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#recharge-usb\"\u003eUSB charging\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#telecommande\"\u003eThe remote control model\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#culots-e14-e27\"\u003eE14 and E27 bases\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#brancher-parallele\"\u003eWiring three bulbs in parallel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#inconvenients\"\u003eThe drawbacks\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#entretien\"\u003eCare and storage\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"#faq\"\u003eFrequently asked questions\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/nav\u003e\n\n\u003ch2 id=\"principe\"\u003eWhat is a rechargeable light bulb and how does it work?\u003c\/h2\u003e\n\u003cp\u003eA rechargeable light bulb contains a battery that powers its LEDs: you charge it with a USB cable, then it gives light without being screwed into a live socket. It screws in like a standard bulb in a light fitting, but also works unplugged, which makes it useful far from a socket.\u003c\/p\u003e\n\n\u003ch3\u003eA bulb with a built-in battery, how to use it\u003c\/h3\u003e\n\u003cp\u003eUnder the globe sit a battery, LEDs and a USB port. A push button turns it on without going through a wall switch. This block is what sets a rechargeable bulb apart from an ordinary LED, and what means you have to unscrew it when the port is under the base. The base, shape and tint are chosen as elsewhere, in \u003ca href=\"https:\/\/designix.fr\/collections\/ampoules\"\u003ethe full light bulb range\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eRechargeable bulbs or mains-powered bulb: what changes\u003c\/h3\u003e\n\u003cp\u003eOn mains power, the bulb receives 220 V whenever the switch is on: it gives light with no time limit. The battery version trades that continuity for the absence of a cable, with a limited runtime and a recharge to plan for. Compare our \u003ca href=\"\/collections\/ampoules-led-220v\"\u003e220V LED bulbs\u003c\/a\u003e if the socket is already powered.\u003c\/p\u003e\n\n\u003ch2 id=\"sans-electricite\"\u003eHow do you run a light bulb without electricity?\u003c\/h2\u003e\n\u003cp\u003eYou need a bulb whose battery is charged: it turns on with its button or remote control, without a powered socket. You charge it in advance from a USB socket, a computer or a power bank, then it lights autonomously for the duration stated by the manufacturer on the product page.\u003c\/p\u003e\n\n\u003ch3\u003eRechargeable bulbs: charge first, switch on after\u003c\/h3\u003e\n\u003cp\u003eThe routine has two steps: unscrew the bulb or leave its port accessible, plug the cable into a phone charger, a computer or a power bank, then screw it back in once charged. You switch it on with the button or the remote. In a cellar, this cycle fits around the moments when a socket is free.\u003c\/p\u003e\n\n\u003ch3\u003eWhat the battery cannot do\u003c\/h3\u003e\n\u003cp\u003eA battery does not replace a mains supply: no continuous lighting for hours, no guaranteed power at the end of the charge. Outdoors, the IP rating of the light matters as much as the bulb. For a fixed powered point, \u003ca href=\"\/collections\/ampoules-12v\"\u003e12V low-voltage bulbs\u003c\/a\u003e or 220 V remain simpler to live with.\u003c\/p\u003e\n\n\u003ch2 id=\"ou-installer\"\u003eWhere should you install a rechargeable light bulb in the home?\u003c\/h2\u003e\n\u003cp\u003eA rechargeable light bulb finds its place wherever running a cable is impossible or pointless: cupboard, cellar, under the stairs, bedside table without a socket, sheltered terrace. In a living room or bedroom, it complements an existing light rather than replacing it, with a warm light of 2700 K to 3000 K.\u003c\/p\u003e\n\n\u003ch3\u003eRechargeable bulbs for the living room\u003c\/h3\u003e\n\u003cp\u003eA pendant that is switched off, a dark reading corner, a shelf without power: the bulb screws into the socket and lights up when needed. At 2700 K, the light stays close to incandescent, without harshness. To furnish a whole room, browse the \u003ca href=\"\/collections\/ampoules-pour-salon\"\u003ebulbs for lighting a living room\u003c\/a\u003e. The \u003ca href=\"\/collections\/ampoules-2700k\"\u003ewarm 2700K light\u003c\/a\u003e softens the reading corners there.\u003c\/p\u003e\n\n\u003ch3\u003eIn the bedroom and small spaces\u003c\/h3\u003e\n\u003cp\u003eOn a bedside table without a socket, the bulb charges during the day and serves in the evening. In a cupboard or under the stairs, it gets you out of trouble without running a line. The \u003ca href=\"\/collections\/ampoules-pour-chambre\"\u003ebedroom bulbs\u003c\/a\u003e give a reference for tint, and the \u003ca href=\"\/collections\/ampoules-3000k\"\u003e3000K warm white\u003c\/a\u003e lights a desk corner a little more sharply.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eThree similar solutions, not to be confused.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSolution\u003c\/th\u003e\n\u003cth\u003ePower supply\u003c\/th\u003e\n\u003cth\u003eWhere it helps\u003c\/th\u003e\n\u003cth\u003eLimit to know\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUSB rechargeable bulb\u003c\/td\u003e\n\u003ctd\u003eBuilt-in battery, cable charging\u003c\/td\u003e\n\u003ctd\u003eCupboard, cellar, bedside without socket, sheltered terrace\u003c\/td\u003e\n\u003ctd\u003eLimited runtime, recharge to plan for\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMains LED bulb\u003c\/td\u003e\n\u003ctd\u003e220 V mains via the socket\u003c\/td\u003e\n\u003ctd\u003eAll correctly wired rooms\u003c\/td\u003e\n\u003ctd\u003eA powered socket is required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12 V bulb\u003c\/td\u003e\n\u003ctd\u003eLow voltage via transformer\u003c\/td\u003e\n\u003ctd\u003eFurniture or outdoor lights\u003c\/td\u003e\n\u003ctd\u003eA suitable transformer is essential\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePortable battery lamp\u003c\/td\u003e\n\u003ctd\u003eRechargeable battery\u003c\/td\u003e\n\u003ctd\u003eTable, terrace, worksite\u003c\/td\u003e\n\u003ctd\u003eIt is not a bulb on its own\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 id=\"recharge-usb\"\u003eHow do you charge a rechargeable light bulb via USB?\u003c\/h2\u003e\n\u003cp\u003eCharging is done with a USB cable plugged into a phone charger, a computer or a power bank, once the bulb is unscrewed or its port accessible. Charging time and connector type vary by model: check the product page before buying to know the stated lighting duration.\u003c\/p\u003e\n\n\u003ch3\u003eUSB rechargeable bulbs: cable, port and power bank\u003c\/h3\u003e\n\u003cp\u003eNot all bulbs come with their cable, and the connector varies from one model to another. The port is sometimes on the side, sometimes under the base, which means unscrewing it for every recharge. A standard phone charger is enough. Outdoors, a power bank makes the bulb self-sufficient for an evening.\u003c\/p\u003e\n\n\u003ch3\u003eHow long to charge and how long to light?\u003c\/h3\u003e\n\u003cp\u003eNo generic duration holds: it depends on the battery capacity and the number of LEDs powered. The product page gives the charging time and the runtime stated by the manufacturer, the only figure to rely on. The light often dims at the end of the battery, which shows in a room lit only that way.\u003c\/p\u003e\n\n\u003ch2 id=\"telecommande\"\u003eRechargeable light bulb with remote control: what uses?\u003c\/h2\u003e\n\u003cp\u003eThe remote control lets you turn it on, turn it off and often adjust the brightness or colour without reaching the bulb, useful for a high pendant or a lamp placed far from the sofa. It works on the models that state it: not all rechargeable bulbs are remote-controlled, the product page is the reference.\u003c\/p\u003e\n\n\u003ch3\u003eRechargeable bulbs with remote control: brightness and colour\u003c\/h3\u003e\n\u003cp\u003eOn a pendant hung high, the remote saves getting out the stepladder to dim the light. The models that state it switch from a warm white to a more neutral white, sometimes to a coloured tint. Not all functions are present everywhere: trust the product page, and failing that the \u003ca href=\"\/collections\/ampoules-led-a-variateur\"\u003edimmable bulbs\u003c\/a\u003e when the socket is on mains power.\u003c\/p\u003e\n\n\u003ch3\u003eOne remote control for several bulbs\u003c\/h3\u003e\n\u003cp\u003eThe same remote often controls several bulbs of the same model, after pairing according to the instructions. The range remains that of a short radio signal, a few metres, and thick walls reduce it. Remember the remote's batteries, to be changed without dismantling the light.\u003c\/p\u003e\n\n\u003ch2 id=\"culots-e14-e27\"\u003eWhat is the difference between E14 and E27 bulbs?\u003c\/h2\u003e\n\u003cp\u003eE27 and E14 refer to the diameter of the screw base: E27 measures 27 mm and fits most living room lights, E14 measures 14 mm and concerns small lights such as wall lights, bedside lamps or slim chandeliers. One base does not fit the other, you must check the socket before buying.\u003c\/p\u003e\n\n\u003ch3\u003eE14 rechargeable bulbs for small lights\u003c\/h3\u003e\n\u003cp\u003eIn a wall light or a small chandelier, the socket is narrow and the size under the shade matters as much as the base: a bulb that is too long touches the glass. Measure the available height before ordering. The \u003ca href=\"\/collections\/ampoules-e14\"\u003eE14 bulbs for small lights\u003c\/a\u003e cover this format; for large sockets, see the \u003ca href=\"\/collections\/ampoules-culot-e27\"\u003eE27 base models\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eGU10, G9 and G4: the other bases\u003c\/h3\u003e\n\u003cp\u003eGU10 locks in with two pins, G9 and G4 clip in, none of them screw in. These formats concern adjustable spotlights and low-voltage lights, where the transformer sets the bulb voltage. The \u003ca href=\"\/collections\/ampoules-gu10\"\u003eGU10 spotlights and bulbs\u003c\/a\u003e and the \u003ca href=\"\/collections\/autres-culots-ampoules-g4-g9-etc-1\"\u003eG4 and G9 bases\u003c\/a\u003e are chosen by their fitting before their wattage.\u003c\/p\u003e\n\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eBase\u003c\/th\u003e\n\u003cth\u003eDiameter or fitting\u003c\/th\u003e\n\u003cth\u003eLights concerned\u003c\/th\u003e\n\u003cth\u003eTo check\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eE27\u003c\/td\u003e\n\u003ctd\u003e27 mm, screw\u003c\/td\u003e\n\u003ctd\u003ePendants, ceiling lights, table lamps\u003c\/td\u003e\n\u003ctd\u003eThe size of the bulb under the shade\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eE14\u003c\/td\u003e\n\u003ctd\u003e14 mm, screw\u003c\/td\u003e\n\u003ctd\u003eWall lights, small chandeliers, compact bedside lamps\u003c\/td\u003e\n\u003ctd\u003eThe often narrow socket diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGU10\u003c\/td\u003e\n\u003ctd\u003eLocking pins\u003c\/td\u003e\n\u003ctd\u003eAdjustable spotlights, spotlight ceiling lights\u003c\/td\u003e\n\u003ctd\u003eThe bayonet fitting, not a screw thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eG9\u003c\/td\u003e\n\u003ctd\u003ePins\u003c\/td\u003e\n\u003ctd\u003eChandeliers, wall lights, small lights\u003c\/td\u003e\n\u003ctd\u003eThe length available inside the light\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eG4\u003c\/td\u003e\n\u003ctd\u003ePins\u003c\/td\u003e\n\u003ctd\u003eLow-voltage lights, small wall lights\u003c\/td\u003e\n\u003ctd\u003eThe light's voltage, often 12 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2 id=\"brancher-parallele\"\u003eHow do you wire 3 bulbs in parallel?\u003c\/h2\u003e\n\u003cp\u003eThree bulbs are wired in parallel by connecting each socket to the same two wires, live and neutral: each stays independently powered and switches on separately. With rechargeable bulbs, this wiring is not needed, they work on their own, with no wire or live socket.\u003c\/p\u003e\n\n\u003ch3\u003eWiring 3 bulbs in parallel: the principle\u003c\/h3\u003e\n\u003cp\u003eTwo conductors run from one socket to the next, each socket connects to them as a branch: a blown bulb does not switch off the others, unlike a series circuit. Cut the power at the breaker and, if the panel is unclear, call an electrician. The equipment is chosen according to the wire cross-section and the number of points.\u003c\/p\u003e\n\n\u003ch3\u003eWhen wiring becomes pointless\u003c\/h3\u003e\n\u003cp\u003eIn a cupboard with no power supply, running three lines makes no sense for supplementary lighting. A battery bulb screwed into a dead socket meets the need without any work. For a fixed point, compare with \u003ca href=\"\/collections\/luminaire\"\u003ethe light fittings that take these bulbs\u003c\/a\u003e before drilling a wall.\u003c\/p\u003e\n\n\u003ch2 id=\"inconvenients\"\u003eWhat are the drawbacks of rechargeable LED bulbs?\u003c\/h2\u003e\n\u003cp\u003eA rechargeable light bulb gives light for less time than a mains bulb, must be recharged regularly and weighs a little more because of its battery. Its lifespan depends on the quality of the battery, and the price is higher than an LED bulb without a battery, for a portable use that does not otherwise exist.\u003c\/p\u003e\n\n\u003ch3\u003eRuntime and weight: what you have to accept\u003c\/h3\u003e\n\u003cp\u003eThe battery adds weight to a socket that was not designed for it, particularly a wall light. At the end of the charge, the light dims before going out, which is noticeable when reading. You also have to accept unscrewing the bulb to recharge it. There is no free distribution of LED bulbs for the general public: the only freebies come from one-off operations.\u003c\/p\u003e\n\n\u003ch3\u003eRechargeable bulbs: what to check before buying\u003c\/h3\u003e\n\u003cp\u003eFour points: the base of the light, the presence of a remote if the light is high, the type of cable and port for charging, and compatibility with a wall dimmer, never guaranteed on a battery bulb. Compare with a simple LED bulb, lighter and more economical.\u003c\/p\u003e\n\n\u003ch2 id=\"entretien\"\u003eHow do you look after a rechargeable light bulb so it lasts?\u003c\/h2\u003e\n\u003cp\u003eCharge the bulb before extended storage, avoid leaving it in a light exposed to damp or near a heat source, and dust it with the power off using a dry cloth. A suitable charger and regular full cycles preserve the battery better than systematic partial recharging.\u003c\/p\u003e\n\n\u003ch3\u003eCharging without wearing out the battery\u003c\/h3\u003e\n\u003cp\u003eA phone charger is enough, there is no need for a more powerful one. Avoid leaving the bulb charging for several days and storing it completely flat: a battery left empty too long loses its capacity. For seasonal use, a half charge before storage is safer than a full charge.\u003c\/p\u003e\n\n\u003ch3\u003eWhere to store it and when to replace it\u003c\/h3\u003e\n\u003cp\u003eSomewhere dry, frost-free, away from a radiator, and preferably in its packaging when the glass is thin. A \u003ca href=\"\/collections\/ampoules-a-filament\"\u003evisible filament bulb\u003c\/a\u003e is as vulnerable to knocks as to dust. When the runtime drops noticeably, the battery is at the end of its life: the bulb is replaced, it is not repaired. The \u003ca href=\"\/collections\/ampoules-retro\"\u003eretro-style bulbs\u003c\/a\u003e follow the same storage rules.\u003c\/p\u003e\n\n\u003cp\u003eSecure payment, tracked delivery, returns and Designix customer service: the order is placed on the product page, which lists base, colour temperature and runtime. Before confirming, check your light's socket and that the cable is included in the box.\u003c\/p\u003e\n\n\u003ch2 id=\"faq\"\u003eFrequently asked questions about rechargeable light bulbs\u003c\/h2\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat are the 4 types of electric light bulbs?\u003c\/summary\u003e\n\u003cp\u003eThe four families are incandescent, halogen, compact fluorescent and LED. The first three heat up to give light, the LED converts electricity into light with less loss. Rechargeable models belong to the LED family, with a battery that replaces the mains supply.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhich bulbs are the most efficient?\u003c\/summary\u003e\n\u003cp\u003eFor comparable light, LEDs use the least electricity and last longer than incandescent or halogen. Their efficiency depends on the luminous flux relative to the wattage, stated on the packaging. A rechargeable bulb adds a battery: it remains efficient, with the charge loss inherent to any accumulator.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eWhat is the best battery lamp?\u003c\/summary\u003e\n\u003cp\u003eThere is no best model in absolute terms: you choose according to the light's base, the lighting duration needed and the presence of a remote control. A USB-rechargeable battery avoids buying disposable batteries, and a model whose page clearly states the runtime is easier to compare.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eHow do you switch on a light bulb?\u003c\/summary\u003e\n\u003cp\u003eA mains bulb is switched on with the light's switch or the socket's. A rechargeable bulb is switched on with its built-in button or its remote control, without depending on a wall switch. In both cases, it must be correctly screwed or clipped into its base before switching on.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails\u003e\n\u003csummary\u003eDoes a rechargeable light bulb work with a dimmer?\u003c\/summary\u003e\n\u003cp\u003eIt depends on the model: a battery bulb is not designed to be dimmed by a wall dimmer, which acts on the mains supply. Bulbs intended for dimming state this explicitly on their page. Without that mention, adjust the brightness with the remote control when there is one.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"CollectionPage\",\"name\":\"Rechargeable light bulbs: choosing a bulb that lights without a socket\",\"description\":\"Rechargeable light bulbs: E27 or E14 base, USB charging, remote control and runtime. 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The first three heat up to give light, the LED converts electricity into light with less loss. Rechargeable models belong to the LED family, with a battery that replaces the mains supply.\"}},{\"@type\":\"Question\",\"name\":\"Which bulbs are the most efficient?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For comparable light, LEDs use the least electricity and last longer than incandescent or halogen. Their efficiency depends on the luminous flux relative to the wattage, stated on the packaging. A rechargeable bulb adds a battery: it remains efficient, with the charge loss inherent to any accumulator.\"}},{\"@type\":\"Question\",\"name\":\"What is the best battery lamp?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"There is no best model in absolute terms: you choose according to the light's base, the lighting duration needed and the presence of a remote control. A USB-rechargeable battery avoids buying disposable batteries, and a model whose page clearly states the runtime is easier to compare.\"}},{\"@type\":\"Question\",\"name\":\"How do you switch on a light bulb?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A mains bulb is switched on with the light's switch or the socket's. A rechargeable bulb is switched on with its built-in button or its remote control, without depending on a wall switch. In both cases, it must be correctly screwed or clipped into its base before switching on.\"}},{\"@type\":\"Question\",\"name\":\"How can you get LED bulbs for free?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"There is no free distribution of LED bulbs to the general public: the only free offers come from one-off commercial operations or local schemes, to be checked near you. The safest approach remains comparing the stated consumption, lifespan and base before buying.\"}},{\"@type\":\"Question\",\"name\":\"Does a rechargeable light bulb work with a dimmer?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"It depends on the model: a battery bulb is not designed to be dimmed by a wall dimmer, which acts on the mains supply. Bulbs intended for dimming state this explicitly on their page. Without that mention, adjust the brightness with the remote control when there is one.\"}}]}]\u003c\/script\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/8598\/2228\/collections\/designix-entete-ampoules-rechargeables-v1.jpg?v=1793021868","url":"https:\/\/designix-lighting.com\/collections\/rechargeable-light-bulbs.oembed","provider":"Designix","version":"1.0","type":"link"}