Product Description
VMAX Heated LiFePO4 Battery with Bluetooth
The VMAX LFP3650MBH is a 36V 50Ah lithium deep cycle battery with Bluetooth that's engineered for trolling motors, off-grid solar, and 36 volt energy-storage systems that require high capacity and dependable power. Designed with an internal self-heating system for safe cold weather charging, plus a built-in Battery Management System (BMS) for protection and long service life. Integrated Bluetooth battery monitoring and a light 27 pound design makes it a perfect drop-in lithium upgrade over heavier AGM or flooded Group 31 batteries. IP67 waterproof rating, fast charging, and long cycle life make this a user friendly and versatile lithium upgrade.
Features & Benefits
- Bluetooth – Realtime monitoring of battery performance in the VMAX App.
- Self-Heating – Enables safe charging below 32°F (0°C) for year-round use.
- 50Ah Capacity – Long run times for trolling motors and 36 volt energy storage banks.
- Built-In BMS Protection – Over/under-voltage, over-current, and temperature protections.
- Light Weight – Easier handling and drop-in replacement for many Group 31 applications.
- Fast, Efficient Charging – Optimized for LiFePO4 smart chargers and solar charge controllers.
- 7 Year Warranty – Backed by VMAX's industry leading customer service.
Why Choose VMAX Lithium Batteries?
The VMAX LFP series pairs high-grade LiFePO4 cells with an advanced Battery Management System (BMS) to deliver stable, maintenance-free deep-cycle power—year after year. Their integrated self-heating system maintains a charge acceptable internal temperature in freezing conditions, making winter operation practical for RVs, boaters, and off-grid users. The standardized group sizes and M8 terminals simplify drop-in lithium upgrades where AGM or flooded batteries were previously used. With fast charging, high discharge capability and support for series & parallel banks, they scale easily from a single house battery to multi-battery energy storage banks. Backed by a 7-Year Warranty for reliable power and excellent long-term value.
VMAX Bluetooth Battery Monitoring
View real-time battery status, performance, and enable custom alerts to be notified when your specified conditions are exceeded.
Quickly and Easily Check:
- Voltage
- Amperage In/Out
- Estimated Time to Full Charge at Current Charge Rate
- Cell Balancing Monitor
- Temperature
- Battery Status
- Battery Cycles
VMAX App Downloads
| Type | Lithium (LiFePO4) |
| Voltage | 38.4 Volts |
| Capacity | 50Ah / 1920Wh |
| Maximum Continuous Discharge |
100 Amps |
| Group Size | 31 |
| Length | 13.07" (33.2 cm) |
| Width | 6.89" (17.5 cm) |
| Height | 8.74" (22.2 cm) |
| Weight | 27.5 lbs (12.5 kg) |
| Terminals | M8 Inserts (hardware included) |
| Polarity | + Left / - Right |
| Charging Current |
5 - 50A |
| Charging Voltage |
43.8 Volts |
| Low Voltage Cut-Off |
24.0 Volts |
| Operating Temperature |
-4°F - 150°F (-20°C - 66°C) |
| Heater On (Powered By Charger) |
32°F (0°C) |
| Warranty | 7 Years |
VMAX LFP3650MBH 36V Group 31 Cross-Reference
Group 31 36V Lithium Batteries: AB-36V60-BT, DL36-60, IC-36V50-EP, Li31M36V50, LFP3650MBH, PGL36VM60, PID36V60AH, PP-36V-65AH, PSL-BT-36400-G31, RB36V40, SLIL36VDCM-BT, 850042818497.
Important: Always confirm your battery's dimensions, terminal configuration, and specifications before purchase to ensure proper fit and performance.
Warning: LiFePO4 charger required if upgrading from non-lithium batteries.
Recommended Charger for the LFP3650MBH
VMAX 36V 20A Charger & Maintainer
