Five years ago, Après bought a sailboat named Prey, equipped with brand-new lead-acid batteries. As those batteries neared the end of their lifespan, Après faced a choice: replace them with more of the same or upgrade to a modern lithium battery system. After careful consideration, he opted for a Docan Power 12.8V 300Ah lithium battery, kicking off an exciting energy upgrade for his boating adventures.
Why Docan Power?
Après’s decision was sparked by a trusted recommendation. A friend who lives aboard his boat in Florida raved about his two 280Ah Docan batteries, praising their reliability in daily use. At just $410 for a 300Ah battery, the price was hard to beat. Plus, with shipping from Houston, Après received his order in just 2-5 days—a big win for convenience. Want to power your own adventures? Buy the same product Après chose here:
Testing Before the Big Install
Before installing it on Prey, Après put the battery through its paces at home. Powering devices like a Raspberry Pi, he found it delivered even more than the promised 300Ah—closer to 330Ah by his estimate. The built-in LCD screen and Bluetooth app (paired with a JBD BMS) made monitoring voltage, capacity, and temperature a breeze. “From the packaging to the performance, I’m really impressed,” Après shared in his video.
Plans for the Upgrade
Après is documenting the entire upgrade process in a video series, covering the installation, circuit redesign, and unboxing of supporting gear like solar panels and chargers. He’s keeping one lead-acid battery as a backup for redundancy, but the Docan lithium battery will take center stage as the primary power source. With multiple charging options—solar, a DC-DC charger, and shore power—he’s aiming for a more efficient and dependable system for long sailing trips.
First Impressions
Since receiving the battery in December 2024, Après has been testing it through March 2025. “It’s been great so far,” he says. “I’m excited to see how it holds up on the boat.” For Après, switching to lithium isn’t just a technical upgrade—it’s a step toward enhancing his life on the water.
Amy Zheng, a lithium battery sales expert with over 11 years of experience, specializes in LiFePO4 batteries, battery management systems (BMS), and DIY energy storage solutions. As a trusted creator on Facebook and YouTube, she shares honest insights with more than 14,000 followers, offering reliable service and establishing Docan Amy as a go-to resource in the field.
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