--- product_id: 387382059 title: "FocusFoto Full Decoded BLS-1 BLS-5 BLS-50 Dummy Battery DC Coupler with USB Cable for Olympus OM-D E-M10 Mark II III IV Pen E-PL9 E-PL8 E-PL7 E-PL6 E-P3 E-P2 E-PM3 Camera Battery Power Bank" brand: "focusfoto" price: "383.78 DT" currency: TND in_stock: true reviews_count: 3 category: "Focus Foto" url: https://www.desertcart.tn/products/387382059-focusfoto-full-decoded-bls-1-bls-5-bls-50-dummy store_origin: TN region: Tunisia --- # 87% DC-DC power conversion efficiency Full decoded dummy battery replacement USB 5V 2A-4A input with voltage conversion FocusFoto Full Decoded BLS-1 BLS-5 BLS-50 Dummy Battery DC Coupler with USB Cable for Olympus OM-D E-M10 Mark II III IV Pen E-PL9 E-PL8 E-PL7 E-PL6 E-P3 E-P2 E-PM3 Camera Battery Power Bank **Brand:** focusfoto **Price:** 383.78 DT **Availability:** ✅ In Stock ## Summary > 🔋 Power your passion nonstop — never miss the shot again! ## Quick Answers - **What is this?** FocusFoto Full Decoded BLS-1 BLS-5 BLS-50 Dummy Battery DC Coupler with USB Cable for Olympus OM-D E-M10 Mark II III IV Pen E-PL9 E-PL8 E-PL7 E-PL6 E-P3 E-P2 E-PM3 Camera Battery Power Bank by focusfoto - **How much does it cost?** 383.78 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/387382059-focusfoto-full-decoded-bls-1-bls-5-bls-50-dummy) ## Best For - focusfoto enthusiasts ## Why This Product - Trusted focusfoto brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Convenience:** Simply insert the coupler and connect USB—no complex setup, just instant power on demand. - • **Smart Voltage Conversion:** Built-in circuit ensures stable 8V output from standard 5V USB power banks for reliable performance. - • **Uninterrupted Power Flow:** Say goodbye to battery swaps during critical shoots with continuous USB-powered camera operation. - • **Extended Shooting Freedom:** Leverage any high-capacity power bank to capture marathon sessions without worrying about battery life. - • **Universal Olympus Compatibility:** Seamlessly fits a wide range of Olympus OM-D, PEN, and Stylus models for versatile use. ## Overview The FocusFoto Full Decoded BLS-1/BLS-5/BLS-50 Dummy Battery DC Coupler replaces your Olympus camera battery with a USB-powered solution featuring a voltage conversion circuit. Compatible with numerous Olympus OM-D, PEN, and Stylus models, it delivers stable 8V output from 5V USB power sources (2A-4A), enabling extended shooting sessions without battery changes. With 87% conversion efficiency and a 2-meter USB cable, it’s designed for professional photographers seeking uninterrupted power on the go. ## Description Introduction: This full decoded BLS5 DC-coupler with USB cable allows you to connect with a power bank as external power source to be used with the camera, replacement for BLS5/BLS50/BLS1 battery. USB plug is designed with voltage conversion circuit, and works with DC 5V 2A-4A power source. Connect the USB plug to power source and put the coupler into the camera battery compartment to provide stable and continuous power supply for your camera. Enables you to use external power source with your camera to achieve long time shooting, no need to replace camera battery again and again. Features: Input: 5-5.5V 2A-4A Output: 8V DC Port：DC 5.5*2.1mm Conversion efficiency: 87% (DC-DC Efficient conversion rate) USB plug Specifications: USB2.0 Total Length: 200cm Compatible Battery/Charger Part Numbers: OLYMPUS PS-BLS5/BLS50/BLS1Compatible Camcorder / Camera Part Numbers: Olympus E-PL1、E-PL2、E-PL3、E-PL5、E-PL6、E-PL7、E-PL8、E-PL9、E-PM1、E-PM2、E-PM3、E-P1、E-P2、E-P3、E-P10、E-M10、E-M10II、E-M10III、E-M10IV、E-400、E-410、E-420、E-450、E-600、E-620、STYLUS 1... Package including: 1 x Full Decoded DC-Coupler with USB cableNOTE: In order to make your camera work better,please use equipment with sufficient power 5V 2A and above (charger, power bank, mobile power supply); When the power is not enough, will not start or can not shoot properly. Do not use the computer USB supply for the camera,because most computer USB 2.0 output voltage is 5V,But the current is less than 500mA. Review: It works. I've tested it, but not used it seriously yet. I have one for my A6000 which is power hungry and the reason I bought the device. That works well. Review: I don't ever write reviews, but felt compelled to do so now. I purchased a FocusFoto Full Decoded BLS-1 BLS-5 BLS-50 Dummy Battery DC Coupler in November from desertcart. I didn't get a chance to try it out until this past weekend. I had been using my camera with batteries without any problems. I plugged the coupler unit in, inserted it into my Olympus OM-D E-M5 Mark III, then turned my camera on. The charge light on the camera went on briefly, then off, but nothing else went on. Now the camera won't turn on, even with my regular BLS50 batteries. Tried feedback to seller, but that would not work. I cannot recommend this unit to anyone ## Features - This full decoded BLS5 DC-coupler with USB cable allows you to connect with a power bank as external power source to be used with the camera, replacement for BLS5/BLS50/BLS1 battery. - USB plug is designed with voltage conversion circuit, and works with DC 5V 2A-4A power source. - Connect the USB plug to power source and put the coupler into the camera battery compartment to provide stable and continuous power supply for your camera. - Enables you to use external power source with your camera to achieve long time shooting, no need to replace camera battery again and again. - Compatible Camcorder / Camera Part Numbers: For Olympus E-PL1、E-PL2、E-PL3、E-PL5、E-PL6、E-PL7、E-PL8、E-PL9、E-PM1、E-PM2、E-PM3、E-P1、E-P2、E-P3、E-P10、E-M10、E-M10II、E-M10III、E-M10IV、E-400、E-410、E-420、E-450、E-600、E-620、STYLUS 1... ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B092QHJVDT | | Manufacturer | FocusFoto | | Manufacturer reference | SUNNJ388 | | Package Dimensions | 17.6 x 14.3 x 2.9 cm; 82 g | ## Product Details - **Amperage:** 4 Amps - **Brand:** FocusFoto - **Colour:** Black - **Compatible devices:** Camcorder, Cameras, Mobile Phones - **Connector type:** USB - **Included components:** Cable, Battery, Usb Cable, Camera, Plug - **Input voltage:** 5 Volts - **Special features:** Camera, Stable - **Total USB ports:** 1 - **Wattage:** 500 watts ## Images ![FocusFoto Full Decoded BLS-1 BLS-5 BLS-50 Dummy Battery DC Coupler with USB Cable for Olympus OM-D E-M10 Mark II III IV Pen E-PL9 E-PL8 E-PL7 E-PL6 E-P3 E-P2 E-PM3 Camera Battery Power Bank - Image 1](https://m.media-amazon.com/images/I/61l3PxZ2ykL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ Review *by S***. on 12 October 2025* It works. I've tested it, but not used it seriously yet. I have one for my A6000 which is power hungry and the reason I bought the device. That works well. ### ⭐ Review *by N***. on 29 January 2026* I don't ever write reviews, but felt compelled to do so now. I purchased a FocusFoto Full Decoded BLS-1 BLS-5 BLS-50 Dummy Battery DC Coupler in November from Amazon. I didn't get a chance to try it out until this past weekend. I had been using my camera with batteries without any problems. I plugged the coupler unit in, inserted it into my Olympus OM-D E-M5 Mark III, then turned my camera on. The charge light on the camera went on briefly, then off, but nothing else went on. Now the camera won't turn on, even with my regular BLS50 batteries. Tried feedback to seller, but that would not work. I cannot recommend this unit to anyone ### ⭐⭐⭐ Review *by P***G on 16 January 2025* The issues I mention, are ALL RELATED TO THE DESIGN OF THE OM-D's CAMERA BODY, not this battery adapter itself. Be aware of them, before using this adapter for applications like long outdoor time-lapse. So far, the adapter worked as advertised and no problem powering up the camera and different lenses. More tests needed (after I add better weather/moisture protection). #1 The OM-D E5 is not designed to accommodate a pseudo-battery with an external cable ==> other cameras have a notch in their case & additional seal to close the door and seal cable outlet #2 The open door poses a challenge to mount the camera with ext. power onto a tripod, especially when using the 1/4" thread. It is not impossible but you need to be careful not to damage the door. #3 Also avoid moisture intrusion into the camera body through this open door. At night, dew can creep into many places. ## Frequently Bought Together - FocusFoto Full Decoded BLS-1 BLS-5 BLS-50 Dummy Battery DC Coupler with USB Cable for Olympus OM-D E-M10 Mark II III IV Pen E-PL9 E-PL8 E-PL7 E-PL6 E-P3 E-P2 E-PM3 Camera Battery Power Bank - Elgato Cam Link 4K – External Capture Card for DSLR & Camcorder, ActionCam as Webcam, Meet/Stream/Record in 1080p60 or 4K30/4K60, Easy Connect for OBS/Zoom/Discord – HDMI to USB 3.0, PC/Mac/iPad --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/387382059-focusfoto-full-decoded-bls-1-bls-5-bls-50-dummy](https://www.desertcart.tn/products/387382059-focusfoto-full-decoded-bls-1-bls-5-bls-50-dummy) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-09*