--- product_id: 78469442 title: "Votronic 30A 12V DC to 12V DC automatic multi-stage battery to battery charger for motorhome, caravan, boat, yacht, RV, van, trailer" brand: "photonic universe ltd" price: "FREE" currency: GBP in_stock: false reviews_count: 2 url: https://www.desertcart.co.uk/products/78469442-votronic-30a-12v-dc-to-12v-dc-automatic-multi-stage store_origin: GB region: United Kingdom --- # 30A max rapid charge Dual 12V battery compatibility Automatic multi-stage charging Votronic 30A 12V DC to 12V DC automatic multi-stage battery to battery charger for motorhome, caravan, boat, yacht, RV, van, trailer **Brand:** photonic universe ltd **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🔌 Charge smarter, drive further — never get caught powerless again! ## Quick Answers - **What is this?** Votronic 30A 12V DC to 12V DC automatic multi-stage battery to battery charger for motorhome, caravan, boat, yacht, RV, van, trailer by photonic universe ltd - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/78469442-votronic-30a-12v-dc-to-12v-dc-automatic-multi-stage) ## Best For - photonic universe ltd enthusiasts ## Why This Product - Trusted photonic universe ltd brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Up On The Go:** Delivers a robust 30A charge to keep your auxiliary battery fully juiced during every drive. - • **Smart Multi-Stage Charging:** Automatically optimizes charging phases to extend battery life and maximize efficiency. - • **Solar-Ready & Retrofit Friendly:** Perfect for solar-powered setups and easy to install in existing motorhomes, boats, or RVs. - • **Universal Battery Compatibility:** Works flawlessly with 12V lead acid and lithium iron batteries over 50Ah capacity. - • **Seamless Dual Battery Integration:** Transforms any single 12V system into a smart dual battery setup without hassle or rewiring. ## Overview The Votronic 30A 12V DC to DC charger intelligently transfers energy from one 12V battery to another, enabling efficient dual battery charging in motorhomes, caravans, boats, and RVs. Compatible with lead acid and lithium iron batteries over 50Ah, it supports rapid 30A multi-stage charging optimized for on-the-move power top-ups and solar system integration. ## Description Automatically charges one 12V battery / battery bank by drawing energy from another 12V battery / battery bank with its own energy source (e.g solar / mains/ alternator). Max charging current of 30A. This charger can be easily integrated or retrofitted into any 12V system, allowing the user to transform a single battery system into a dual battery charging system. For example, in a vehicle or boat this charger can take the energy from the engine starter battery to charge a leisure battery. In a solar charging system, the charger allows easy conversion from a single to dual battery charging kit, without replacing the controller. Safe unattended charging: inbuilt safety functions (protection against overload, overheating, overvoltage, short circuit, incorrect polarization and reverse discharge) allow the charger to be left permanently connected to the source battery. Uninterrupted charging: continues to operate at full power whilst energy is drawn from the battery/ 12V loads are in use. Compatible with other charging sources: batteries can be charged from alternative power sources e.g. solar panels/ generators, whilst connected. Dead battery recovery: a gentle preliminary charging stage for completely drained batteries. Vehicle optimisation: automatically charges batteries at full power, even during short journeys. Ideal for vehicles of Euro 6 emission standard & above, as it prevents any reduced/ intermittent charging voltage. Battery temp sensor (supplied): monitors source battery temperature. Charger adjusts settings accordingly to protect the batteries. Suitable for use with any 12V lead acid or lithium iron batteries, with min. capacity of 50Ah. Voltage: 12V. Charging current: 0-30A. Size: 15 x 7 x 4 cm, 0.3kg. Covered by a 2 yr warranty. Please contact Photonic Universe if you have any questions. ## Features - Intelligent battery-to-battery charger, designed to automatically charge one 12V battery / battery bank from another 12V battery / battery bank with its own energy source (e.g. charged by solar / mains/ alternator) - Can be easily integrated or retrofitted into any 12V system, allowing the user to transform a single battery system into a dual battery charging system. E.g. can take power from an starter battery to charge a leisure or auxiliary battery - Perfect for solar charging systems with a high solar input, where a capable dual battery solar charge controller is expensive or difficult to procure. - Suitable for any 12V lead acid or lithium iron batteries, with a capacity of 50Ah or greater. - Rapid, intelligent charging of the target battery / bank, at a maximum of 30A. Optimised for vehicle battery charging whilst driving (charges at full power even during short distances). Scroll down to product description for more information about this product ## Product Details - **Brand:** Photonic Universe Ltd - **Colour:** Black - **Item weight:** 0.3 Kilograms - **Output voltage:** 12 Volts - **Input voltage:** 12 Volts ## Images ![Votronic 30A 12V DC to 12V DC automatic multi-stage battery to battery charger for motorhome, caravan, boat, yacht, RV, van, trailer - Image 1](https://m.media-amazon.com/images/I/61YdyB+rmbL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ A must for every car van! *by T***O on 15 January 2020* I use it to boost the charge of carvan's battery.It works very fine and I am very satisfied!Sizes are very small..!!! Nice!Delivery was very fast thanks to Amazon!I suggest it. ### ⭐⭐⭐⭐⭐ Great *by S***A on 12 March 2019* Perfect product --- ## 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.co.uk/products/78469442-votronic-30a-12v-dc-to-12v-dc-automatic-multi-stage](https://www.desertcart.co.uk/products/78469442-votronic-30a-12v-dc-to-12v-dc-automatic-multi-stage) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-12*