NPB-750-24 - Battery charger Mean Well - Free user manual and instructions
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| Product Type | Battery Charger |
| Brand | Mean Well |
| Model | NPB-750-24 |
| Input Voltage | 90 - 264 VAC (universal) |
| Input Frequency | 47 - 63 Hz |
| Output Voltage | 24 VDC (nominal) |
| Output Current | 31.25 A (max) |
| Rated Power | 750 W |
| Efficiency | > 91% at full load |
| Charging Profile | Three-stage (IUoU): Bulk, Absorption, Float |
| Battery Types Supported | Lead-acid (flooded, AGM, gel) |
| Bulk Charge Voltage | 28.8 VDC |
| Float Charge Voltage | 27.6 VDC |
| Dimensions (L x W x H) | 295 x 127 x 41 mm |
| Weight | 1.5 kg |
| Cooling Method | Built-in fan (temperature controlled) |
| Operating Temperature | -20°C to +60°C |
| Protection Features | Short circuit, overvoltage, overcurrent, overtemperature |
| Isolation Voltage | I/O: 3 kVAC |
| Display | LED indicators for status (power, charging, fault) |
| Safety Standards | UL 62368-1, EN 60335-2-29, etc. |
| Maintenance | Keep air vents clean; ensure proper ventilation; check battery connections periodically. |
Frequently Asked Questions - NPB-750-24 Mean Well
What type of batteries can I charge with the NPB-750-24?
The NPB-750-24 is designed for lead-acid batteries, including flooded, AGM, and gel types. Do not charge lithium-ion or other chemistries unless specified.
How do I connect the charger to my battery bank?
Ensure the charger is unplugged. Connect the positive output terminal (V+) to the battery positive, and negative (V-) to battery negative. Use proper gauge wire for 31.25 A current. Check polarity to avoid damage.
What is the charging profile of the NPB-750-24?
It uses a three-stage IUoU profile: Bulk (constant current until 28.8V), Absorption (constant voltage 28.8V until current drops), and Float (constant voltage 27.6V to maintain charge).
Can I use this charger in parallel to increase current?
No, the NPB-750-24 is not designed for parallel operation. For higher current, use a single higher-power model or series connection for higher voltage (with caution).
What does the red LED indicator mean?
The red LED typically indicates a fault condition, such as overtemperature, overvoltage, or short circuit. Check connections, ventilation, and battery voltage. If persists, contact Mean Well support.
How do I maintain the NPB-750-24?
Keep the charger clean and dust-free. Regularly inspect the fan and air intakes for blockage. Ensure all connections are tight and corrosion-free. Store in a dry, ventilated area.
What is the input voltage range?
The charger accepts a universal input of 90-264 VAC at 47-63 Hz, making it suitable for most global power grids.
Is the NPB-750-24 suitable for outdoor use?
It is designed for indoor use only. If used outdoors, it must be placed in a waterproof enclosure. The charger itself is not weatherproof.
What is the warranty period?
Mean Well typically offers a 2-year warranty for the NPB series. Check with your distributor for specific terms.
Can I adjust the output voltage?
No, the output voltages (bulk 28.8V, float 27.6V) are fixed for optimal lead-acid charging. Do not attempt to modify internal components.
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USER MANUAL NPB-750-24 Mean Well
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Product information
Brand : Mean Well
Model : NPB-750-24
Category : Battery charger