⚡ Monster Marine Lithium™ MML-CW3665B “36V 65Ah Bluetooth Trolling Battery”
36V 65Ah Bluetooth Deep Cycle Marine Trolling Battery
Overview
Meet the MML-CW3665B, the compact power that’s redefining marine performance.
This 36V 65Ah Bluetooth Lithium Trolling Battery brings advanced LiFePO₄ technology and integrated Bluetooth monitoring to your boat — giving you lightweight efficiency, real-time performance data, and unmatched endurance in a single, drop-in battery.
At only 38 lbs, this single battery replaces three traditional 12V lead-acid or gel batteries, cutting a ton of weight while freeing up valuable space.
It’s engineered to deliver twice the power, four times the lifespan, and instant plug-and-play installation for your 36V trolling motor system.
Key Features
✅ One Battery, Triple the Output
Replaces three 12V batteries — saving space, simplifying wiring, and reducing overall boat weight.
📱 Integrated Bluetooth Monitoring
Track real-time voltage, current, capacity, and battery health directly from your smartphone via the MMLithium app.
⚡ Lightweight, Heavy-Duty Power
Power that weighs less — dramatically lighter than lead-acid with more muscle in every amp.
🔋 LiFePO₄ Technology
Provides double the usable power, four times the cycle life, and consistent voltage output from start to finish.
➕ Expandable Power
Easily connect a second in parallel (positive to positive, negative to negative) to double capacity.
🪛 Plug-and-Play Installation
Connect your trolling motor directly to the battery — no complex setup required.
⚙️ Physical Specifications
| Parameter |
Specification |
| Weight |
38 lbs |
| Dimensions (L × W × H) |
13 in × 6.77 in × 9.5 in (330 × 172 × 241 mm) |
| Enclosure Material |
Marine-grade ABS housing |
| Terminal Type |
M8 Brass Bolt |
🔋 Electrical Specifications
| Parameter |
Specification |
| Nominal Voltage |
38.4 V |
| Nominal Capacity |
65 Ah |
| Energy |
2496Wh |
| Charge Voltage Range |
43.5 – 43.8 V |
| Max Charge Current |
50 A |
| Continuous Discharge Current |
100 A max |
| Cycle Life |
4000+ cycles |
| Battery Chemistry |
Lithium Iron Phosphate (LiFePO₄) |
| Bluetooth Functionality |
Built-in Smart Monitoring via App |
⚓ Applications
| Use Case |
Compatibility |
| Primary Use |
36 V trolling motors |
| Parallel Configuration |
Connect Multiple in parallel for extended run time. |
| Replacement For |
(3) × 12 V SLA batteries |
| Compatible Brands |
Minn Kota • Garmin • Lowrance • Rhodan • All 36 V trolling motors |
