--- product_id: 37672863 title: "PowerMax PM4 100A Power Converter 110V AC to 12V DC | 100 Amp with Built-in 4-Stage Smart Battery Charger | Reverse Polarity, Overload & Thermal Protection | Ideal for RV, Boat & Off-Grid Systems" brand: "powermax" price: "€ 440.52" currency: EUR in_stock: true reviews_count: 13 category: "Power Max" url: https://www.desertcart.hr/products/37672863-powermax-pm4-100a-power-converter-110v-ac-to-12v-dc store_origin: HR region: Croatia --- # 100A heavy-duty output 4-stage smart charging multi-layer safety protection PowerMax PM4 100A Power Converter 110V AC to 12V DC | 100 Amp with Built-in 4-Stage Smart Battery Charger | Reverse Polarity, Overload & Thermal Protection | Ideal for RV, Boat & Off-Grid Systems **Brand:** powermax **Price:** € 440.52 **Availability:** ✅ In Stock ## Summary > ⚡ Power your off-grid lifestyle with confidence and style! ## Quick Answers - **What is this?** PowerMax PM4 100A Power Converter 110V AC to 12V DC | 100 Amp with Built-in 4-Stage Smart Battery Charger | Reverse Polarity, Overload & Thermal Protection | Ideal for RV, Boat & Off-Grid Systems by powermax - **How much does it cost?** € 440.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/37672863-powermax-pm4-100a-power-converter-110v-ac-to-12v-dc) ## Best For - powermax enthusiasts ## Why This Product - Trusted powermax brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built-In Safety Shield:** Reverse polarity, overload, and thermal protections keep your gear safe and sound. - • **Plug & Play Installation:** Get up and running in 10 minutes—no rewiring or electrician needed. - • **Powerhouse 100 Amp Output:** Unleash robust, stable 12V DC power for demanding RV, marine, and off-grid setups. - • **Scalable Power Flexibility:** Easily expand your system by wiring multiple units for next-level energy demands. - • **Smart 4-Stage Battery Charger:** Maximize battery lifespan with intelligent Bulk, Absorption, Float, and Equalization charging. ## Overview The PowerMax PM4 100A is a high-capacity 110V AC to 12V DC power converter delivering a solid 100 amps output. Featuring a built-in 4-stage smart battery charger and comprehensive safety protections, it’s engineered for RVs, boats, and off-grid systems. Its quick installation and scalable design make it the go-to solution for reliable, efficient, and safe DC power conversion and battery maintenance. ## Description Buy PowerMax PM4 100A Power Converter 110V AC to 12V DC | 100 Amp with Built-in 4-Stage Smart Battery Charger | Reverse Polarity, Overload & Thermal Protection | Ideal for RV, Boat & Off-Grid Systems: Battery Chargers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Excellent! - Product works as it should. No problems so far! Review: Beast Mode! 100 Actual Amps of Charge! - This is a solid charger! Its a bit heavy, but its not something you'd probably take on a hike anyway! You mount it, wire it, and let it do its thing. Anyway, I am running 4x 100 Amp Hour lithium LiFePO4 batteries off grid, and charging on bad solar day used to take forever. If you have 400 amp hours worth of batteries, your 15 amp charger will have you burning way to much fuel on your generator. But at 100 amps, an hour of charge will sometimes be enough to run the day. Way better! Anyway, I tried to post a link to my YouTube video but desertcart didn't allow that, but you you want, go look for my name on YouTube and you'll find it. Otherwise, I did see an honest 100 amps of charge, measured with my clamp on amp meter multimeter. I'm totally stoked to finally have this online and working! ## Features - 🔋 High Amperage for Heavy-Duty Use The PowerMax PM4 100A Power Converter delivers 100 amps of 12V DC power, ideal for running high-demand devices like RVs, boats, 12V car audio systems, and LED lighting. It provides stable and reliable power, making it the perfect solution for off-grid and backup power needs. Its high amperage ensures you can safely power larger systems without overloading or causing flickering lights in your camper or RV. - ⚡ Wide Range of Applications PowerMax PM4 100A is designed for versatility, powering RVs and 12V DC electronics, boat trolling motors, LED lighting, and even small off-grid homes. It’s also perfect for powering equipment remotely or providing backup during emergencies. This converter can be used for home lighting, solar systems, and audio setups, making it an all-in-one solution for your power needs. - 🔒 Built-In Protection for Safe Operation Safety is a top priority with the PowerMax PM4 100A. It features reverse polarity protection, overload protection, and thermal protection to prevent overheating and damage to your devices. The advanced safety features ensure your equipment stays protected from electrical mishaps, and the built-in innovative charging system maintains safe battery voltage for longer battery life. - 🔋 Advanced 3-Stage Charging System Equipped with an intelligent 3-stage charging system, the PowerMax PM4 100A provides optimal charging to your RV or off-grid battery. The system includes Bulk, Absorption, and Float stages, preventing overcharging and improving battery longevity. This technology ensures that your battery remains in optimal condition, reducing the risk of boil-off or sulfation while enhancing overall performance. - 🛠️ Easy Installation with No Rewiring One of the most user-friendly features of the PowerMax PM4 100A is its quick, 10-minute installation. You won’t need to rewire your system—simply mount the unit, connect it to your power source, and plug it into your devices. This makes it ideal for DIY enthusiasts and RV owners who want to upgrade their power systems without the hassle of complicated rewiring or professional help. - 🔌 Perfect for Off-Grid and Solar Applications Whether using solar panels or living off the grid, the PowerMax PM4 100A provides reliable DC power for your essential devices. It works seamlessly with solar setups and other off-grid power systems, ensuring your 12V devices run efficiently. Whether you’re powering lights, pumps, or communications equipment, this unit delivers clean, stable power for your entire system. - ⚡ Expandable Power Solutions For users with more demanding power needs, the PowerMax PM4 Series is designed for scalability. You can wire multiple units in series or parallel to meet higher amperage requirements. This flexibility allows you to scale up your power system as needed, making the PowerMax PM4 a perfect solution for larger RVs, marine vessels, or homes with multiple electrical systems. - 💡 Reliable Power for Sensitive Electronics The PowerMax PM4 100A is a stable and reliable power source, ensuring your sensitive electronics, such as diagnostic tools, RV electronics, and marine equipment, run smoothly. The unit provides a clean, stable DC output that eliminates power fluctuations, which is crucial for running devices like ECMs, inverters, and other equipment that require consistent voltage for proper operation. - 🔋 Long-Lasting Battery Maintenance Designed with battery longevity in mind, the PowerMax PM4 100A’s advanced charging system ensures your RV or off-grid battery stays in optimal condition. The 3-stage charging system helps prevent overcharging, preserving battery life and maximizing performance. Regular maintenance with this converter means you’ll get years of reliable power from your battery, with minimal maintenance required. - ⚙️ Versatile Power for a Range of Devices From RVs and boats to home backup and off-grid systems, the PowerMax PM4 100A is the ideal power converter for various applications. It can be used to power 12V devices, charge batteries, or run essential equipment like trolling motors, lights, or communications devices. Its versatility and ease of use make it a must-have for off-grid living, boating, RVing, or home backup setups. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01ER3LH5W | | Best Sellers Rank | #12,837 in Automotive ( See Top 100 in Automotive ) #3 in RV Power Converters | | Brand | PowerMax | | Built-In Media | Battery Charger Install guide | | Color | Metallic | | Customer Reviews | 4.4 4.4 out of 5 stars (701) | | EU Spare Part Availability Duration | 5 Years | | Global Trade Identification Number | 00685867998228 | | Input Voltage | 110 Volts | | Item Dimensions | 12 x 9 x 5 inches | | Item Type Name | PowerMax PM4 100A 110V AC to 12V DC 100 Amp Power Converter with Built-in 4 Stage Smart Battery Charger | | Item Weight | 7 Pounds | | Manufacturer | PowerMax | | Mfr Part Number | PM4 100A | | Model Number | PM4 100A | | Number of Outlets | 1 | | Output Voltage | 12 Volts (DC) | | Plug Type | Type B | | Power Source | Battery Powered | | UPC | 685867998228 | | Unit Count | 1.0 Count | | Warranty Description | 2 Years | ## Product Details - **Brand:** PowerMax - **Color:** Metallic - **Input Voltage:** 110 Volts - **Item Weight:** 7 Pounds - **Item dimensions L x W x H:** 12 x 9 x 5 inches ## Images ![PowerMax PM4 100A Power Converter 110V AC to 12V DC | 100 Amp with Built-in 4-Stage Smart Battery Charger | Reverse Polarity, Overload & Thermal Protection | Ideal for RV, Boat & Off-Grid Systems - Image 1](https://m.media-amazon.com/images/I/61LBJw+PX+L.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: Does the 100 amp work good with car amplifier and subwoofer over 800watt rms?** A: Yes if you run an appropriate car battery in parallel with the 100 amp power supply. Stereo shops use the 100 amp unit as well. Think of it like this, the power supply is the alternator and the battery is the power source. Car batteries are everywhere and cheap. Run the two together and you will be just fine. **Q: Anyone know how to contact the manufacturer regarding faulty product???** A: I also got a 120a pm3 LK for charging my lifepo4 bank. The unit fan did not work for 4 days then started working and the converter changes volts and amps constantly after it is on for 15min.. clearly a defective unit.. I emailed powermax. They responded a few times to trouble shoot. Then once we established the unit is faulty now they refuse to respond to my emails… disputed charge on my credit card… not a good way to run a business. **Q: Which model (Amps?) would be suitabe from 900 starting watts/700 running watts?** A: 900W equates to 75A at 12V dc. W=V*I or Watts=Voltage times Current. So though the 75A model will work, but I would use the 100A model just to be on the safe side. **Q: Is there any reason i can't replace my 55amp with this? Will my 3500 watt generator run it?** A: Yes, a 3500 watt generator will provide 29.2 amps at 120 volts, however my 100 amp charger draws 17.1 amps when providing 91 amps output, so 120×17.1=2052 watts consumed to provide 12×91=1092 watts, giving a 53% efficiency ratio. Your 3500 watt generator will run one charger with power to spare, and would run two at low output figures, but would trip a breaker if two chargers were both supplying maximum output. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Excellent! *by H***. on February 13, 2026* Product works as it should. No problems so far! ### ⭐⭐⭐⭐⭐ Beast Mode! 100 Actual Amps of Charge! *by C***M on January 18, 2024* This is a solid charger! Its a bit heavy, but its not something you'd probably take on a hike anyway! You mount it, wire it, and let it do its thing. Anyway, I am running 4x 100 Amp Hour lithium LiFePO4 batteries off grid, and charging on bad solar day used to take forever. If you have 400 amp hours worth of batteries, your 15 amp charger will have you burning way to much fuel on your generator. But at 100 amps, an hour of charge will sometimes be enough to run the day. Way better! Anyway, I tried to post a link to my YouTube video but Amazon didn't allow that, but you you want, go look for my name on YouTube and you'll find it. Otherwise, I did see an honest 100 amps of charge, measured with my clamp on amp meter multimeter. I'm totally stoked to finally have this online and working! ### ⭐⭐⭐⭐⭐ Satisfied *by B***N on November 20, 2025* This item is a few years old now and have not had any problems with it operation since day of purchase. The item is of good quality and dependable. ## Frequently Bought Together - PowerMax PM4 100A 110V AC to 12V DC 100 Amp Power Converter with Built-in 4 Stage Smart Battery Charger with Reverse Polarity, Overload and Thermal Protection - TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing - 2 Gauge 2 AWG 10 Feet Black + 10 Feet Red (20 Feet Total) Welding Battery Pure Copper Flexible Cable Wire - Car, Inverter, RV, Solar by WindyNation --- ## 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.hr/products/37672863-powermax-pm4-100a-power-converter-110v-ac-to-12v-dc](https://www.desertcart.hr/products/37672863-powermax-pm4-100a-power-converter-110v-ac-to-12v-dc) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-15*