Introduction: The Growing Demand for 72V Lithium Battery Chargers
Lithium battery systems are rapidly replacing lead-acid in applications ranging from electric golf carts and forklifts to solar storage and low-speed electric vehicles (LSEVs). Among the most common voltage platforms is 72V (nominal), typically comprising 20 to 24 lithium cells in series (LiFePO₄: 20S = 64V nominal, 24S = 76.8V nominal; NMC: 20S = 72V nominal).
Choosing the right 72V lithium battery charger manufacturer is critical. An improper charger can reduce battery life by 50%, create safety hazards, or fail prematurely. CMVTE has emerged as a specialized manufacturer offering smart, programmable, automotive-grade 72V lithium battery chargers for industrial and mobility applications.
What Makes a Great 72V Lithium Battery Charger?
Not all chargers are created equal. A true lithium-specific charger differs from a simple power supply in several ways:
1. CC/CV Charging Profile
-
Constant Current (CC): Delivers full rated current until the battery reaches its absorption voltage.
-
Constant Voltage (CV): Holds voltage while current tapers down to a termination point (usually 0.05C).
2. Battery Chemistry Compatibility
-
LiFePO₄ (LFP): Absorption ~3.65V/cell → 73V for 20S, 87.6V for 24S
-
NMC / Li-ion: Absorption ~4.2V/cell → 84V for 20S
-
LTO (Lithium Titanate): Absorption ~2.7-2.8V/cell → 54-56V for 20S (less common in 72V systems)
3. Communication (CAN / RS485 / SMBus)
Modern lithium batteries have a Battery Management System (BMS). A smart charger should communicate with the BMS to request stop, reduce current, or report faults.
4. Temperature Compensation & Protection
-
Over-temperature shutoff
-
Reverse polarity protection
-
Short circuit protection
-
Spark-free connection
CMVTE: A Trusted 72V Lithium Battery Charger Manufacturer
CMVTE focuses on high-frequency, digitally controlled chargers designed for daily heavy use. Our 72V series is built for both standalone charging stations and on-board vehicle mounting.
Key Specifications of CMVTE 72V Lithium Chargers
| Model | Nominal Voltage | Chemistry | Charge Current | Max Power | Communication |
|---|---|---|---|---|---|
| CMV-72V-15A | 72V (20S Li-ion) | NMC / LiFePO₄ | 15A | 1080W | CAN 2.0B |
| CMV-72V-25A | 72V (24S LiFePO₄) | LiFePO₄ | 25A | 2100W | CAN / RS485 |
| CMV-72V-40A | 72V (20-24S) | Selectable | 40A | 3360W | CAN + Bluetooth |
| CMV-72V-60A | 72V (24S LFP) | LiFePO₄ | 60A | 5kW | CAN + Dry contact |
All models support programmable charge voltage and current via PC software or CAN commands.
Advanced Features
1. Multi-Stage Charging
-
Stage 1: Pre-charge (for deeply discharged cells)
-
Stage 2: Bulk CC (fast charge)
-
Stage 3: Absorption CV (top balance)
-
Stage 4: Float (optional, for standby – typically disabled for lithium)
-
Stage 5: Auto-shutoff or trickle maintenance
2. CAN Bus Integration
CMVTE chargers speak standard CAN 2.0B (250kbps or 500kbps) with a simple protocol:
-
BMS can send
Max Charge VoltageandMax Charge Currentrequests. -
Charger reports output voltage, current, temperature, and fault codes.
-
Compatible with Orion, Dilithium, REC, and many Chinese BMS brands.
3. Temperature-Controlled Fan
-
Fan speed varies with internal temperature.
-
Silent at low power; full speed only when needed.
-
Operating ambient: -20°C to +55°C (derated above 45°C).
4. IP Rating Options
-
IP20: Indoor / dry workshop chargers (standard)
-
IP54 / IP65: Dust-protected and splash-proof for on-board or outdoor use
Applications of CMVTE 72V Lithium Battery Chargers
Our 72V chargers are already deployed in:
1. Electric Golf Carts & Utility Vehicles
-
72V systems (24S LiFePO₄) offer longer run time than 48V.
-
CMV 25A or 40A models charge a 100Ah pack in 2.5 to 4 hours.
2. Low-Speed Electric Vehicles (LSEVs)
-
NEVs (Neighborhood Electric Vehicles), electric rickshaws, and mini trucks.
-
Requires rugged, vibration-resistant packaging – CMV offers optional potted electronics.
3. Forklifts & AGVs (Automated Guided Vehicles)
-
Opportunity charging during breaks. Fast 40A-60A charging reduces downtime.
-
CAN communication coordinates with the vehicle’s fleet management system.
4. Electric Motorcycles & Scooters
-
High-power electric motorcycles (e.g., Zero SR/F aftermarket conversions) using 72V packs.
-
Compact on-board charger version available.
5. Solar Energy Storage
-
72V battery banks in off-grid or backup systems.
-
Charger can be powered from AC grid or generator (universal input 90-264VAC).
Why OEMs and Integrators Choose CMVTE as Their 72V Lithium Battery Charger Manufacturer
1. Full Customization (OEM/ODM)
We don’t just sell standard boxes. CMVTE offers:
-
Custom voltage/current – from 20A to 100A within 72V range
-
Custom enclosure – logo printing, specific connector brands (Anderson, Amphenol, TE)
-
Custom CAN protocol – match your BMS or vehicle controller
-
Mechanical integration – flange mounting, cable length, LED indicators
2. Quality and Safety Certifications
-
CE, RoHS, REACH (for European markets)
-
UL 1564 (industrial battery charger) – in progress for select models
-
ISO 9001:2015 manufacturing
-
Each unit undergoes 48-hour burn-in and full load test at 45°C ambient
3. Protection Features
-
Input: Over-voltage, under-voltage, over-current
-
Output: Reverse polarity (with audible alarm), short circuit, over-voltage
-
Thermal: Auto shutoff at 85°C case temperature
-
Timing: Maximum charge time safety cutoff (programmable)
4. Global AC Input Compatibility
-
Universal input: 90VAC – 264VAC, 47-63Hz
-
PFC (Power Factor Correction) >0.98 at full load – reduces grid distortion
5. Remote Monitoring (Optional)
-
Bluetooth module for smartphone app (iOS/Android)
-
4G / WiFi gateway for fleet charging management
-
Dry relay contacts for external alarm or indicator light
How to Select the Right 72V Lithium Charger for Your Application
| Parameter | Recommendation |
|---|---|
| Battery capacity (Ah) | Charge current (A) = (Capacity × 0.3 to 0.5) for standard charge; up to 1C for fast charge (check cell spec) |
| Chemistry | Set absorption voltage accordingly (LiFePO₄ 3.65V/cell, NMC 4.2V/cell) |
| On-board or stationary | On-board needs IP54+, vibration-resistant terminals |
| Communication | CAN is preferred for dynamic current limiting |
| Connector type | Anderson SB series (50A-175A), or circular military connectors |
Example: A 72V 100Ah LiFePO₄ (20S) golf cart battery. Recommended charger: CMV-72V-25A → 4-hour full charge. Use 35A for faster 3-hour charge (CMV-72V-40A).
Production and Lead Times
CMVTE maintains inventory of standard 72V/15A, 25A, and 40A models for immediate sampling. For custom OEM orders:
| Phase | Duration | Deliverable |
|---|---|---|
| Engineering sample | 15-20 days | 2-5 units with draft datasheet |
| Pilot run (50-200 units) | 25-30 days after approval | Full test reports, certified samples |
| Mass production (500+ units/month) | 30-35 days | JIT delivery, traceability codes |
Technical Support and Documentation
Every CMVTE charger ships with:
-
Detailed user manual (including charge curve diagrams)
-
CAN protocol specification (DBC file or plain text)
-
Mechanical 2D drawing (DXF) and 3D step file
-
CE declaration of conformity
Our application engineers can assist with:
-
BMS integration (remote debugging via TeamViewer)
-
Custom charge profile creation (e.g., for lithium + supercapacitor hybrid)
-
EMC troubleshooting for on-board installations
CMVTE – Your Long-Term Partner for 72V Lithium Charging
As a dedicated 72V lithium battery charger manufacturer, CMVTE combines high-frequency power conversion, intelligent BMS communication, and rugged mechanical design. Whether you need a simple 15A charger for an electric scooter or a 5kW fleet charging station for forklifts, we deliver safety, efficiency, and reliability.
Contact CMVTE today to discuss your 72V lithium battery project. Request a sample, datasheet, or custom quotation.
