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24V 40A LiFePO4 Battery Charger
- 40A Fast Charging: Engineered specifically for 24V LiFePO4 batteries. Featuring advanced 40A constant-current fast charging technology, it fully charges a 24V 100Ah LiFePO4 battery in just 2.5 hours—charging up to 4× faster than conventional 10A chargers, dramatically reducing charging time.
- Wide Voltage Adaptation: Supports 90–264V input voltage, compatible with various applications such as RVs, boats, trucks, and off-grid systems.
- 6 Safety Protections: Built-in over temperature, output short-circuit, reverse polarity connection, output over-voltage, over current, and charge stage timeout protections help reduce damage caused by abnormal charging conditions, ensuring safer and more reliable charging for lithium batteries.
- Smart 3-Stage Charging: Automatically adjusts through three charging stages: pre-charge stage (T1), constant current charging stage (T2), and constant voltage charging stage (T3), optimizing the charging process while helping preserve lithium battery performance and longevity.
- Superior Heat Dissipation: Built-in cooling fan ensures efficient heat dissipation while maintaining quiet operation, delivering a more balanced overall performance.
- IP67 Protection: IP67-rated dustproof and waterproof design, engineered to withstand harsh environmental conditions with ease.
- LED Indicator: Provides clear status indications for standby, charging, full charge, and fault conditions, enabling real-time monitoring of charging progress.
- Portable Design: Equipped with a convenient carrying handle for easy portability and effortless use.
We offer free shipping within the continental U.S. via UPS Ground or FedEx, with orders typically processed in 1–2 business days and delivered within 2–5 business days. Large products such as 12V 628Ah, 48V 314Ah batteries, or 12kW inverters are shipped by truck (LTL) and require signature upon delivery. After order confirmation, we will contact you by email to confirm shipment, and transportation arrangements typically take about 48 hours. Please note that we do not ship to Alaska, Hawaii, Puerto Rico, or PO Box addresses. Delivery times may vary due to external factors such as carrier delays or weather conditions.
For complete details, please visit:
Shipping Policy.
Our batteries come with a 5-year warranty, which can be extended to 7 years total upon product registration. Accessories are covered by a 1-year warranty, and like-new (refurbished) batteries include a 1-year warranty.
For full terms, conditions, and claim details, please visit:
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Fast, Free Shipping
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30-Day Money-Back Guarantee
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Hassle-Free Warranty
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Lifetime Customer Support
Tech Specs
SPECIFICATION
| Brand | WattCycle |
| Model | 24V 40A |
| Input Voltage | 100-240Vac 50/60Hz |
| Output Voltage | 29.2V |
| Output Current | 40A |
| Product Size (Inches) | 11.06 × 5.66 × 3.19 inch |
| Net Weight | 7.94 lbs ±3% / 3.6kg ±3% |
| Relative Humidity | 5%~95% |
| Ingress Protection Rating | IP67 |
| Temperature Range | Operating: -10°C to 45°C / 14°F to 113°F Storage: -40°C to 70°C / -40°F to 158°F |
CHARGING MODE
| Waiting | 🔴🟢 (Flashing Alternately) |
| Charging (<80%) | 🔴 (Flashing) |
| Charging (≥80% <100%) | 🟡 (Flashing) |
| Charging Completed (100%) | 🟢 (Always On) |
| Fault | 🔴 (Flashing Intermittently) |
PROTECTION FUNCTIONS
| 1. Over Temperature Protection | Automatically stops charging when internal temperature reaches 105°C / 221°F; LED flashes red alarm. |
| 2. Output Short-Circuit Protection | Cuts off output current upon short-circuit; LED flashes red alarm. |
| 3. Reverse Polarity Connection Protection | Disconnects charger when connected in reverse polarity; LED flashes red alarm. |
| 4. Output Over-Voltage Protection | Cuts off output current when output exceeds 35V. |
| 5. Output Current Limiting Protection | Triggers automatically when output current exceeds 48A. |
| 6. Cell Short Circuit Timer | Automatically enters next charging stage when safe time value is exceeded. |
CHARGING STAGES
| Stage | Condition | Description |
| T1 Pre-charge |
Voltage < 20.8V | Charges at 10A to activate and repair deeply discharged batteries; switches to T2 when voltage reaches normal value or timeout (10 min). |
| T2 Constant Current |
Voltage ≥ 20.8V Current ≥ 30A |
Charges at rated 40A current; switches to T3 when voltage rises above rated voltage or timeout (10 hours). |
| T3 Constant Voltage |
Current < 30A | Charging current gradually decreases; completes when voltage reaches highest value or timeout (5 hours). |
