--- product_id: 483392251 title: "Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor" brand: "timeusb" price: "¥71097" currency: JPY in_stock: true reviews_count: 8 category: "Timeusb" url: https://www.desertcart.jp/products/483392251-timeusb-12v-50ah-lifepo4-lithium-battery-for-kayak-rv-trolling store_origin: JP region: Japan --- # 50Ah high-capacity power IP65 waterproof durability 50A BMS advanced protection Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor **Brand:** timeusb **Price:** ¥71097 **Availability:** ✅ In Stock ## Summary > 🔋 Power your journey with confidence and never miss a moment! ## Quick Answers - **What is this?** Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor by timeusb - **How much does it cost?** ¥71097 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/483392251-timeusb-12v-50ah-lifepo4-lithium-battery-for-kayak-rv-trolling) ## Best For - timeusb enthusiasts ## Why This Product - Trusted timeusb brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power That Lasts:** 50Ah capacity delivers reliable energy for extended adventures. - • **Endurance Champion:** Up to 15,000 deep charge cycles—10x longer life than traditional lead-acid batteries. - • **Smart Safety Shield:** 50A Battery Management System guards against overcharge, discharge, and temperature extremes. - • **Weatherproof Warrior:** IP65 waterproof rating ensures peak performance rain or shine, salt or fresh water. - • **Support You Can Trust:** 5-year warranty plus lifetime expert tech support keeps you powered worry-free. ## Overview The Timeusb 12V 50Ah LiFePO4 Lithium Battery is a robust, lightweight power solution designed for kayaks, RVs, and trolling motors. Featuring a 50A BMS for comprehensive safety, IP65 waterproofing for harsh environments, and an exceptional lifespan of up to 15,000 deep cycles, it outperforms traditional lead-acid batteries. Backed by a 5-year warranty and lifetime support, it’s engineered for professionals who demand reliable, long-lasting energy on every adventure. ## Description Buy Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor | 50 BMS, Low Temp Protection, Up to 15000 Deep Cycles at 60% DOD, IP65 Waterproof for 20~70lb Boat, Fish Finder, Camping: 12V - desertcart.com ✓ FREE DELIVERY possible on eligible purchases Review: Waited to make review after I beat them up - All I can say is WOW. I bought 16 of these for my expedition marine trawler with 2000w of solar. When I am at anchor I have a full size residential fridge/ a large box freezer/ and a large ice maker/ wine cooler PLUS all the little items that run on the boat. These batteries for last 6 month have had the hell beaten out of them between the solar panels and the diesel generator pumping 100amps of charge through the huge inverter. EVERY day these things get beat on and randomly bank charged from diesel generator and charged by the main drive diesels alternators etc. these things pump out power and take huge charges from all sources. We had 7 people on the boat for 4 weeks and I will say I am IMPRESSED!!!! Way better than my firefly AGM bank they replaced. Bravo for such an great product at such a killer price point ($180 per 100ah battery) Took a chance from buying the expensive battle Borne batteries to save a TON of money,,,, And it is paying off so far!!!!! I’ll update next year after I continuously beat of them moving forward!!! Buy them. You won’t regret Review: Good Batteries-Excellent Customer Service - Good high quality true deep cycling batteries built tough with excellent customer service. Although I've installed a lot of solar since the 1990's, I am now sold on using Lithium Iron Phosphate on home solar installations to replace more typical lead-acid type batteries. Also perfect as an RV house battery. First thing I noticed was that their "Users Manual" was exceptionally well written and easy to read without any confusing language or translation errors. This was a welcome beginning. Communication with the seller, Time-USB is also nothing less than excellent. They gave me a heads-up when the batteries shipped, and they arrived very well packaged with plenty of protection and sooner than expected. If you have technical questions regarding set-up, the folks at Time-USB will be happy to walk you through the process quickly. I worked with Tanya and Gerri, who I found very knowledgable, easy to understand and answered all of my questions completely. I'm liking these new batteries because they are much lighter than Lead-Acid, much safer than most other Lithium-ion types, and if they work as specified, they will be far less expensive in the long run. Unlike lead acid, which can only tolerate about a 50% depth of discharge on a regular basis, you can discharge these all the way down without damage thanks to the built-in battery management circuitboard, or BMS. Although you will get more cycling lifetime if the depth of discharge is more conservative. These batteries work wonderfully along with a good quality, properly configured charger or solar charge controller, like the Morningstar Tristar MPPT series pictured, although custom settings were required. I'm also using Victron's BMV-712 Smart Battery Monitor with Bluetooth to easily and remotely monitor the system's production, battery status and power usage. Another nice thing about LiFePO4 (or LFP) is their very high (99%) charge efficiency compared to lead-acid at 94% or much lower as they age. Speaking of age, if installed and configured correctly, you should theoretically be able to get up to 5x the cycling life from these Lithium Iron Phosphate (LFP) type lithium-ion batteries, perhaps up to 10 years making these a perfect choice for off-grid solar or similar high cycling, high demand battery systems. Lastly, if you should have a problem, Time-USB tech support will resolve it, they also have a 5 year warranty on their products. I've ordered from them 3 times, and always had a good experience. Quality Built Tough! ## Features - 【Upgrade with Low-Temp Protection】 Equipped with a 50A BMS, this lithium battery offers comprehensive protection against overcharge, over-discharge, high-temperature, short-circuit, and overcurrent. It features a low-temperature cutoff, suspending charging below 0℃ and resuming at 5℃, and a discharge cutoff below -20℃. The self-recovery function restores the battery automatically after 30 seconds of overload - 【50A BMS & 1.2C (60A】 Discharge: With an upgraded 1.2C (60A) discharge capability, this battery provides continuous power output for up to 30 minutes at 60A. It adjusts the discharge current to match the requirements of your trolling motor, ensuring optimal performance - 【IP65 Waterproof for Trolling Motor】The Timeusb 12V 50Ah Lithium Battery is designed with IP65 waterproof technology, ensuring its durability in rain, seawater, and humid environments. It's the perfect choice for trolling motors, compatible with Minn Kota, Newport Vessels, and more, as well as fish finders and instrument panels - 【10 Years Long Lifetime】The Timeusb lithium iron phosphate battery (LiFePO4) offers an extended cycle life, with the ability to be recharged between 4000 and 15000 times in a deep cycle. This exceptional longevity surpasses traditional lead-acid batteries that typically offer only 300-500 charge cycles - 【Worry-free After-sales Service】 Timeusb offers a 5-year warranty and lifetime technical support through a responsive and professional customer service team, providing targeted battery solutions for any questions.Feel free to contact us anytime with any questions. Timeusb is always here for you. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BHHQTQRT | | Battery Capacity | 50 amp_hours | | Battery Cell Composition | Lithium-Phosphate | | Battery Type | Lithium-Phosphate | | Best Sellers Rank | #189,582 in Health & Household ( See Top 100 in Health & Household ) #557 in 12V Batteries | | Brand | Timeusb | | Brand Name | Timeusb | | Compatible with Vehicle Type | Boat, Lawn Mower, Marine, RV, Scooter, Trolling Motor | | Customer Reviews | 4.5 out of 5 stars 351 Reviews | | Included Components | 12.8V 50Ah TM LiFePO4 Battery, Installation Guide, Insulating Caps for Bolts*2, M8 Terminal Bolts *2, User Manual | | Item Dimensions D x W x H | 6.53"D x 7.68"W x 6.77"H | | Item Weight | 11 pounds | | Manufacturer | Timeusb | | Manufacturer Part Number | 12V50Ah TM | | Manufacturer Warranty Description | 5 years | | Model Number | Li-Battery01 | | Number Of Cells | 4 | | Number of Items | 1 | | Resistance | 40 milliohms | | Size | 1 Pack | | Terminal | M8 | | UPC | 617230903430 | | Unit Count | 1 Count | | Vehicle Service Type | Boat, Lawn Mower, Marine, RV, Scooter, Trolling Motor | | Voltage | 12.8 volts | ## Product Details - **Battery Cell Composition:** Lithium-Phosphate - **Brand:** Timeusb - **Item Weight:** 11 pounds - **Number Of Cells:** 4 - **Product Dimensions:** 6.53"D x 7.68"W x 6.77"H - **Resistance:** 40 milliohms - **Size:** 1 Pack - **Terminal:** M8 - **Vehicle Service Type:** Boat, Lawn Mower, Marine, RV, Scooter, Trolling Motor - **Voltage:** 12.8 volts ## Images ![Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor - Image 1](https://m.media-amazon.com/images/I/61pzbrWPmfL.jpg) ![Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor - Image 2](https://m.media-amazon.com/images/I/71Kna9wkYjL.jpg) ![Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor - Image 3](https://m.media-amazon.com/images/I/71XLe-9qqWL.jpg) ![Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor - Image 4](https://m.media-amazon.com/images/I/71EeFsaunkL.jpg) ![Timeusb 12V 50Ah LiFePO4 Lithium Battery for Kayak, RV, Trolling Motor - Image 5](https://m.media-amazon.com/images/I/71oU5BeVZ9L.jpg) ## Available Options This product comes in different **Size, Set** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Waited to make review after I beat them up *by M***. on January 15, 2025* All I can say is WOW. I bought 16 of these for my expedition marine trawler with 2000w of solar. When I am at anchor I have a full size residential fridge/ a large box freezer/ and a large ice maker/ wine cooler PLUS all the little items that run on the boat. These batteries for last 6 month have had the hell beaten out of them between the solar panels and the diesel generator pumping 100amps of charge through the huge inverter. EVERY day these things get beat on and randomly bank charged from diesel generator and charged by the main drive diesels alternators etc. these things pump out power and take huge charges from all sources. We had 7 people on the boat for 4 weeks and I will say I am IMPRESSED!!!! Way better than my firefly AGM bank they replaced. Bravo for such an great product at such a killer price point ($180 per 100ah battery) Took a chance from buying the expensive battle Borne batteries to save a TON of money,,,, And it is paying off so far!!!!! I’ll update next year after I continuously beat of them moving forward!!! Buy them. You won’t regret ### ⭐⭐⭐⭐⭐ Good Batteries-Excellent Customer Service *by C***. on February 26, 2023* Good high quality true deep cycling batteries built tough with excellent customer service. Although I've installed a lot of solar since the 1990's, I am now sold on using Lithium Iron Phosphate on home solar installations to replace more typical lead-acid type batteries. Also perfect as an RV house battery. First thing I noticed was that their "Users Manual" was exceptionally well written and easy to read without any confusing language or translation errors. This was a welcome beginning. Communication with the seller, Time-USB is also nothing less than excellent. They gave me a heads-up when the batteries shipped, and they arrived very well packaged with plenty of protection and sooner than expected. If you have technical questions regarding set-up, the folks at Time-USB will be happy to walk you through the process quickly. I worked with Tanya and Gerri, who I found very knowledgable, easy to understand and answered all of my questions completely. I'm liking these new batteries because they are much lighter than Lead-Acid, much safer than most other Lithium-ion types, and if they work as specified, they will be far less expensive in the long run. Unlike lead acid, which can only tolerate about a 50% depth of discharge on a regular basis, you can discharge these all the way down without damage thanks to the built-in battery management circuitboard, or BMS. Although you will get more cycling lifetime if the depth of discharge is more conservative. These batteries work wonderfully along with a good quality, properly configured charger or solar charge controller, like the Morningstar Tristar MPPT series pictured, although custom settings were required. I'm also using Victron's BMV-712 Smart Battery Monitor with Bluetooth to easily and remotely monitor the system's production, battery status and power usage. Another nice thing about LiFePO4 (or LFP) is their very high (99%) charge efficiency compared to lead-acid at 94% or much lower as they age. Speaking of age, if installed and configured correctly, you should theoretically be able to get up to 5x the cycling life from these Lithium Iron Phosphate (LFP) type lithium-ion batteries, perhaps up to 10 years making these a perfect choice for off-grid solar or similar high cycling, high demand battery systems. Lastly, if you should have a problem, Time-USB tech support will resolve it, they also have a 5 year warranty on their products. I've ordered from them 3 times, and always had a good experience. Quality Built Tough! ### ⭐⭐⭐⭐⭐ 1/11/24 update - Even Lower sale prices. Exceptional Value in LIFEPO4 - Will buy again! *by M***N on November 21, 2023* Update: With the drop in Lithium prices, the "buy at" price for these is now $185. I purchased another at this price on Jan 11, 2024 and I am again totally pleased with this brand. I do hope they apply similar pricing to their higher capacity models as I would love to give them a try. I strongly feel that price informs value and try to include the price I paid in my reviews. I highly recommend everyone do the same. In this case, i paid $192 for the 100ah version on October 27th and was so happy I purchased another on Nov 7th 2023. I would buy again without hesitation at the $205 price of this battery today. TL;DR is this is the first 100ah LIFEPO4 I have seen on Amazon for under $200. It meets capacity and current ratings, was well packaged and they made multiple overtures to check if I had questions, etc. It is a no-brainer buy and I will certainly consider more of their products in the future. The price for 100ah LIFEPO4 has been trending down from $300 towards $200 for the last 6 months or so. TimeUSB was the first I have seen to break the sub $200 barrier, so I thought it was worth trying out. I am super glad I did. Packaging - Battery fully enclosed in thick foam and thick carboard box. I don't even think Prime drivers will be able to harm these. They include the terminal bolts and caps for the posts embedded in the foam, nice touch! Looks - honestly this is a non-thing as most folks aren't displaying these batteries. but they have a fun (if comical) red, white, and blue motif with a lil mascot. I welcome a bit of levity in product design. The straps appears to be more than adequate for the weight of the battery. Performance - I'm not an supported influencer, so I don't have all the review tools. However, I know that my cheapo Renogy inverter is about 85% efficient for the load I tested with. My total output on the AC side of that inverter was 1162 w/h and 1165 w/h respectively on the two rounds of testing I did. Some quick maths later and this is actually storing (slightly) more than it is rated for. I also tested with 90 amp load and it had no trouble. Amazing for a battery to perform like a Battleborn, but for 80% less money. Communication - another tiny detail, but worth mentioning. They made communications after each order to ensure I was happy and to tell me to reach out with any questions. Since everything worked as advertised I can't comment on CS. I will try to update my review if there is anything notable in the life of this battery, but a dozen or so cycles in I don't think there is a better value in LIFEPO4 today. The quality of this battery has really me want to look at a few of their larger batteries for another project, so another review likely incoming. TIMEUSB is my new go to LIFEPO4 battery brand! Disclosure - There is none! but I'm including jic as positive reviews are often suspect. I have not had any contact with this company and paid for both batteries myself. just a great deal on a great product that I wanted to share with others. ## Frequently Bought Together - Timeusb 12V 50Ah TM LiFePO4 Battery with Low-temp Protection, 15000+ Cycles Battery with Grade A Cells, Built-in 50A BMS, Deep Cycle Lithium Battery Perfect for Trolling Motor, Kayak, RV,Camping - NOCO GENIUS1: 1A 6V/12V Smart Battery Charger – Automatic Maintainer, Trickle Charger & Desulfator with Overcharge Protection & Temperature Compensation – For Lead-Acid & Lithium Batteries - Newport NV-Series Thrust Saltwater Transom Mounted Trolling Electric Trolling Motor w/LED Battery Indicator --- ## 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.jp/products/483392251-timeusb-12v-50ah-lifepo4-lithium-battery-for-kayak-rv-trolling](https://www.desertcart.jp/products/483392251-timeusb-12v-50ah-lifepo4-lithium-battery-for-kayak-rv-trolling) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-27*