I recently upgraded to the GoldenMate 12V Bluetooth Lithium Battery for my boat’s electronics, and I’ve been very impressed so far. This battery has an extended run time compared to the lead-acid battery it replaced — while being significantly lighter. It has run my fish finder, running lights, and livewell without hiccup. It’s also a bargain, at less than $300.
GoldenMate 12V Bluetooth LiFePO4 Lithium Battery Build
Designed with durability and convenience in mind, this battery is built using automotive-grade LiFePO4 cells and delivers 1280Wh of energy, a massive boost for anyone needing reliable power. Compared to traditional lead-acid batteries, the GoldenMate offers a 5X longer lifetime, with over 5000+ full cycles at 100% depth of discharge and a 10-year service life. That kind of longevity gives you peace of mind when you’re on the water. The terminals are M8 screws, for easy wiring.
What really impressed me is the newly upgraded IP67 waterproof rating, which protects the battery from water and dust — perfect for rough marine environments, rainy days, or wet kayak decks. The low-temp cut-off protection also means I can rely on this battery even during early morning trips in colder weather.
One of the biggest surprises? The battery is 1/3 the weight of a similar-sized AGM battery, with 8X the mass energy density. It’s far easier to carry and install, and it truly is a drop-in replacement for older batteries. Plus, the 3% self-discharge rate means it holds charge extremely well during long storage periods — a huge benefit for seasonal boaters or anyone using it in backup systems.
Charging is fast, performance is steady, and with certifications from UL, FCC, CE, ROHS, and UN38.3, you know it’s built to high safety and quality standards. Whether you’re using it for a boat, trolling motor, RV, off-grid cabin, solar system, or even home power backup, the GoldenMate 12V 100Ah Group 31 Bluetooth LiFePO4 Battery is a reliable, future-proof power solution.
For more info, check out our handy guide to lithium marine batteries.
Specs
| Rated Voltage | 12.8V |
| Rated Capacity | 100Ah |
| Rated Energy | 1280Wh |
| Cell Type | LiFePO₄ |
| Charge Voltage | 14.4V (14.6V Max) |
| Standard Charge Current | 20A |
| Maximum Charge Current | 50A |
| Rated Discharge Current | 120A |
| Discharge Cut-Off Voltage | ~10.4V |
| Dimensions | 12.91 × 6.78 × 8.35 inches |
| Weight | 30.86 lbs |
| Terminal Type | M8 |
| Charge Temperature | 32°F to 122°F (0°C to 50°C) |
| Discharge Temperature | -4°F to 140°F (-20°C to 60°C) |
| Storage Temperature | 32°F to 112°F (0°C to 45°C) |
Battery Management
The 100A built-in BMS (Battery Management System) is incredibly robust, supporting energy-intensive electronics like fish finders and chartplotters without any issue. It features advanced protections against over-charging, over-discharging, over-current, overheating, and short circuits, making it one of the safest batteries I’ve ever used. Whether I’m pushing my trolling motor or running multiple devices, the power stays stable and reliable.
The Bluetooth functionality is a huge bonus. With the Goldenmate app and Bluetooth 5.0, I get real-time updates on voltage, state of charge, temperature, and cycle count — all from my phone. Whether I’m charging or discharging, I can monitor it with ease, which adds a layer of confidence to every outing. The app installs easily by simply scanning the QR code and following the prompts.
The Verdict
In short: the Goldenmate 12V 100Ah Group 31 LiFePO4 battery offers reliability, durability, and longevity. It’s lightweight, smart, and tough enough for serious marine use; I highly recommend it to anyone looking for a serious power upgrade at a reasonable price point. The Bluetooth connectivity makes it easy to keep an eye on, even without a battery gauge.
