--- product_id: 288562858 title: "30W 12V Solar Panel Trickle Charger Maintainer Waterproof Portable" brand: "oymsae" price: "₩134932" currency: KRW in_stock: true reviews_count: 8 category: "Oymsae" url: https://www.desertcart.kr/products/288562858-30w-12v-solar-panel-trickle-charger-maintainer-waterproof-portable store_origin: KR region: South Korea --- # Waterproof & durable design 30W trickle charge power 22% high solar conversion 30W 12V Solar Panel Trickle Charger Maintainer Waterproof Portable **Brand:** oymsae **Price:** ₩134932 **Availability:** ✅ In Stock ## Summary > ☀️ Keep your power flowing, rain or shine—charge smarter, live freer! ## Quick Answers - **What is this?** 30W 12V Solar Panel Trickle Charger Maintainer Waterproof Portable by oymsae - **How much does it cost?** ₩134932 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/288562858-30w-12v-solar-panel-trickle-charger-maintainer-waterproof-portable) ## Best For - oymsae enthusiasts ## Why This Product - Trusted oymsae brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Versatility for Any Setup:** Includes 3 SAE cables and multiple connectors—effortless installation for cars, motorcycles, boats, RVs, and more. - • **Smart Charging with Zero Overcharge Risk:** Built-in microprocessor ensures safe, intelligent charging—no overcharge, no reverse discharge, just pure power maintenance. - • **Maximize Battery Life with 22% Efficiency:** Harness superior monocrystalline ETFE tech for up to 95% light transmittance—power your 12V battery smarter, not harder. - • **Instant Status Insight with LED Indicators:** Blue, red, green lights keep you in the know—monitor charging progress at a glance and avoid downtime. - • **Rugged Waterproof Build for All Adventures:** CPB bottom plate and PET material protect your panel from the elements—durability that keeps pace with your lifestyle. ## Overview The OYMSAE 30W 12V Solar Panel Trickle Charger is a portable, waterproof solar maintainer designed for 12V batteries. Featuring a high 22% conversion efficiency with monocrystalline ETFE cells, it delivers safe, intelligent trickle charging with built-in microprocessor protection. Its LED indicators provide real-time charging status, while versatile SAE connectors enable easy plug-and-play use across vehicles and marine applications. Lightweight yet rugged, this solar panel ensures reliable battery maintenance wherever your journey takes you. ## Description desertcart.com: OYMSAE 30W 12V Solar Panel Trickle Charger Maintainer Waterproof Portable | Solar charging kit with alligator clips,cigarette lighter plug, compated with car, motorcycle, boat,RV,truck,marine battery : Cell Phones & Accessories Review: Works well for Ram Dually - 3 years of use - Here are my observations. First off I park facing a 2015 Ram Dually with the 6.7L Cummins facing due east - this gives me the front and side windows to mount two in during rhe winter months, and the side window alone to mount one in dyring the summer. The solar cell mat sits well in the passenger window by itself. And I lay the other in the front dash. These also stay hooked in full time - never being disconnected (stow them on the floor between the passenger seat and the door at the belt base to keep them upright). Truck has an Aftermarket Car Alarm that tends to work the batteries moreso than a normal truck. Truck stays sitting for a week at a time (during summers up to a month, and maybe once or twice like this during the winter) in Buffalo, NY. Batteries are 2-each set of $350 Odyssey H7 Batteries, Absorbed Glass Mat (AGM) P/N ODP-AGM94RH7. First off, I run one solar charger in the summer and two in the winter. What I found was that during the winter, a single one was OK, but due to the amount of snow buildup (and just the lower amount of sun), that I needed two running together to top off the battery. And, that and the fact that they tend to go bad in the winter and I couldn't risk loosing charge on a 4 week run and flatten $700's worth of batteries. Also, Batteries always tend to go bad in single digit weather in January and February. Observations: Brand new I could get the charge to 12.4V during the summer during the first year. The winter's, it's more like 11.8-12.2V; but it honestly couldn't seem to keep up, finding it after two weeks straight at 11.4V at times with just the single charger. On year two I noticed the batteries couldn't seem to go north of 12.2V in the summer. In November, I bought a replacement solar charger as the first one finally went; but then I also bought a second one due to the likelihood that while sitting for several weeks straight, that this one charger failing could take out both of these batteries. So now with two Solar Chargers installed, with a dual-headed 12V splitter (Power Drive PD9223BL 2-way 12V Adapter), I was able to get to 12.2V, and even 11.8V with the windows covered (the side window less than an inch, but the front burried) - honestly, the solar cells still charge somehow. So during rhe winter of 24-25 (and at this time of writing), this configuratuon has worked flawlessly!! Review: Super versatile & powerful solar charger - My husband bought the solar charger quite a while ago, but I did not want to do a review until we've used it quite a lot. I must say this wireless portable power bank is amazing. I took my grandchildren to the amusement park and all 4 of us used it during the day to keep our phones charged and it still had plenty of charge left when our phones were full. It truly does have a long battery life. I love the versatility of the chords, where I have an android phone and my grandchildren have iphones. All our phones can be charged from the same charging unit. Only later was I told it was a solar charger and a flashlight which makes it even more useful. It is a bit heavier than our other 10,000 mAh chargers. However, it is also triple the mAh of the other ones at 30,000 mAh. I'm quite happy with the product and definitely give it a five star. ## Features - 22 % High Conversion Rate:Monocrystalline solar battery charger use ETFE , with a light transmittance of up to 95 %. The 30 W trickle charging mode is an ideal choice for low-cost maintenance of your 12 V battery power - Intelligent Protection:Combined with built-in charging microprocessor technology, it will not overcharge the battery when fully charged during the day, and prevent the battery from reverse discharge at night - Charging Visualization:The indicator lights are used to help you understand the charging status: the blue light is on (in the sun), the red light is on (charging), the green light is on (charging completed), three indicator lights are off (a short circuit occurs). You can check the connection in time when the solar energy fails - Plug and Play:The three -pieces SAE cable included with the solar panel kit allows you to have more choices in charging methods. Plug and play, even for inexperienced novices, fast connection can be achieved - Sturdy and Durable:Waterproof solar trickle charger, adding CPB as the bottom plate, reducing the risk of reducing the efficiency of the solar panel due to panel breakage ## Technical Specifications | Specification | Value | |---------------|-------| | AC Adapter Current | 1.11 A | | ASIN | B08N4SBDB3 | | Amperage Capacity | 1.11 A | | Best Sellers Rank | #31,649 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #26 in Solar Battery Chargers & Charging Kits | | Brand | OYMSAE | | Brand Name | OYMSAE | | Connector Type | Barrel Connector | | Customer Reviews | 4.3 out of 5 stars 731 Reviews | | Included Components | 1pc solar panel | | Item Dimensions L x W x H | 16.1"L x 0.67"W x 11.4"H | | Item Highlight | Solar charging kit with alligator clips,cigarette lighter plug, compated with car, motorcycle, boat,RV,truck,marine battery | | Item Weight | 1.6 pounds | | Manufacturer | OYMSAE | | Manufacturer Part Number | PO-M30W | | Manufacturer Warranty Description | 2 Year Manufacturer | | Material | PET | | Material Type | PET | | Maximum Power | 20 watts | | Maximum Voltage | 18 volts | | Model Number | PO-M30W | | Number of Items | 1 | | Output Voltage | 12 volts | | Product Dimensions | 16.1"L x 0.67"W x 11.4"H | | Special Features | Lightweight Design | | UPC | 884017577775 | | Unit Count | 1 Count | ## Product Details - **Brand:** OYMSAE - **Included Components:** 1pc solar panel - **Item Weight:** 1.6 pounds - **Material:** PET - **Product Dimensions:** 16.1"L x 0.67"W x 11.4"H ## Images ![30W 12V Solar Panel Trickle Charger Maintainer Waterproof Portable - Image 1](https://m.media-amazon.com/images/I/712Z+wiu8eL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Will this solar charger revive a completely dead car battery?** A: Designed for 12V trickle charging/maintenance, it prevents discharge but can't revive sulfation-damaged batteries from long-term drainage. Optimal use requires 6V+ residual voltage. **Q: How to confirm if it works with my vehicle?** A: Compatible with all 12V lead-acid/AGM/LiFePO4 batteries (cars/boats/RVs). Our 30W upgraded model handles larger batteries up to 150Ah. Just connect via SAE port - zero wiring expertise required. **Q: Does it drain power when not in sunlight?** A: The zero-night-drain controller terminates charging at sunset and activates reverse current blockade. Energy loss is 85% lower than basic models according to lab tests. **Q: What makes your charger safer than cheap alternatives?** A: Features include ✓ ETFE-coated monocrystalline cells (IP67 waterproof) ✓ Triple-protection IC: Overcharge/Short-circuit/Reverse polarity ✓ CPB impact-resistant base (tested for 50km/h debris collisions) **Q: How long to charge a standard SUV battery?** A: ▸ 30W model: Fully charges 80Ah battery in ~5 days (2-4% daily trickle) ▸ For faster charging, pair with our 45W PRO Series (ideal for RVs/campers) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works well for Ram Dually - 3 years of use *by J***T on February 1, 2025* Here are my observations. First off I park facing a 2015 Ram Dually with the 6.7L Cummins facing due east - this gives me the front and side windows to mount two in during rhe winter months, and the side window alone to mount one in dyring the summer. The solar cell mat sits well in the passenger window by itself. And I lay the other in the front dash. These also stay hooked in full time - never being disconnected (stow them on the floor between the passenger seat and the door at the belt base to keep them upright). Truck has an Aftermarket Car Alarm that tends to work the batteries moreso than a normal truck. Truck stays sitting for a week at a time (during summers up to a month, and maybe once or twice like this during the winter) in Buffalo, NY. Batteries are 2-each set of $350 Odyssey H7 Batteries, Absorbed Glass Mat (AGM) P/N ODP-AGM94RH7. First off, I run one solar charger in the summer and two in the winter. What I found was that during the winter, a single one was OK, but due to the amount of snow buildup (and just the lower amount of sun), that I needed two running together to top off the battery. And, that and the fact that they tend to go bad in the winter and I couldn't risk loosing charge on a 4 week run and flatten $700's worth of batteries. Also, Batteries always tend to go bad in single digit weather in January and February. Observations: Brand new I could get the charge to 12.4V during the summer during the first year. The winter's, it's more like 11.8-12.2V; but it honestly couldn't seem to keep up, finding it after two weeks straight at 11.4V at times with just the single charger. On year two I noticed the batteries couldn't seem to go north of 12.2V in the summer. In November, I bought a replacement solar charger as the first one finally went; but then I also bought a second one due to the likelihood that while sitting for several weeks straight, that this one charger failing could take out both of these batteries. So now with two Solar Chargers installed, with a dual-headed 12V splitter (Power Drive PD9223BL 2-way 12V Adapter), I was able to get to 12.2V, and even 11.8V with the windows covered (the side window less than an inch, but the front burried) - honestly, the solar cells still charge somehow. So during rhe winter of 24-25 (and at this time of writing), this configuratuon has worked flawlessly!! ### ⭐⭐⭐⭐⭐ Super versatile & powerful solar charger *by W***Y on July 22, 2025* My husband bought the solar charger quite a while ago, but I did not want to do a review until we've used it quite a lot. I must say this wireless portable power bank is amazing. I took my grandchildren to the amusement park and all 4 of us used it during the day to keep our phones charged and it still had plenty of charge left when our phones were full. It truly does have a long battery life. I love the versatility of the chords, where I have an android phone and my grandchildren have iphones. All our phones can be charged from the same charging unit. Only later was I told it was a solar charger and a flashlight which makes it even more useful. It is a bit heavier than our other 10,000 mAh chargers. However, it is also triple the mAh of the other ones at 30,000 mAh. I'm quite happy with the product and definitely give it a five star. ### ⭐⭐⭐⭐⭐ Stopped working after 2 months (Or so I thought) [UPDATED REVIEW] *by A***Z on September 13, 2022* Original Review: At first I really liked the panel, I have a Bluetooth adapter that reads battery voltage and I could see the charge go up if I sat there for a few seconds. I was checking voltage regularly (every 2 or 3 days) to make sure it was keeping my battery at the properly charged, which it was. So when I finally decided to trust this and not be checking it so often, it stops working. Now I have a dead battery and will have to pay to have it replaced. Not happy. Updated Review: Let me start by saying that the reason my battery drained was not this solar panel's fault. Turns out the Hands-Free Link module in my car had gone bad and was draining the battery even when the car was off. Once that was found to be the issue, thanks to a friend that has the same car I do and coincidentally started having the same battery drain issue too, he told me what was causing and how to get to it to unplug it to test if my HFL module was draining the battery. After the HFL module was unplugged I then though to take this solar panel out from storage and check, I had not used it since I labeled it as "bad" but never got to throw it away since I thought it did put out some power just not enough for my car. Well now I can say that my car can sit indefinitely, the battery will not die anymore and has not gone bellow 12.3 volts even after 3 weeks of the car not being used. ## Frequently Bought Together - OYMSAE 30 Watt 12 Volt Solar Panel Solar Trickle Charger 30W 12V Portable Solar Battery Charger & maintainer with Cigarette Lighter Plug & Alligator Clip - OYMSAE 25Feet SAE to SAE Extension Cable Quick Disconnect Connector 16AWG,for Automotive,Solar Panel Panel SAE Plug(25FT(16AWG)), Charging Adapter --- ## 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.kr/products/288562858-30w-12v-solar-panel-trickle-charger-maintainer-waterproof-portable](https://www.desertcart.kr/products/288562858-30w-12v-solar-panel-trickle-charger-maintainer-waterproof-portable) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-11-10*