Back-UPS BX750MI - Inverter APC - Free user manual and instructions
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| Product Type | UPS (Uninterruptible Power Supply) |
| Brand | APC |
| Model | Back-UPS BX750MI |
| VA Rating | 750 VA |
| Watt Rating | 400 W |
| Input Voltage | 220-240 VAC |
| Output Voltage | 220-240 VAC (battery mode) |
| Number of Outlets | 6 (battery backup + surge protection) |
| USB Charging Ports | 2 (5V, 2.4A total) |
| Dimensions (H x W x D) | 160 x 100 x 310 mm |
| Weight | 4.2 kg |
| Battery Type | Sealed lead-acid, user-replaceable |
| Typical Backup Time (half load) | 15-20 minutes |
| Surge Protection | Yes, 310 Joules |
| Alarm | Audible when on battery or low battery |
| User Interface | LED indicators (Power, On Battery, Replace Battery) |
| Main Functions | Battery backup, surge protection, automatic voltage regulation (AVR), USB charging |
| Maintenance and Cleaning | Clean with dry cloth; keep vents unobstructed; test battery every 3 months |
| Safety | Overload protection, short circuit protection, safety shutdown |
| Spare Parts and Repairability | User-replaceable battery (RBC model RBC2); no user-serviceable internal parts |
| Warranty | 2 years (excluding battery) |
| General Information | Designed for home and office use; protects against blackouts and minor power fluctuations |
Frequently Asked Questions - Back-UPS BX750MI APC
How long does the battery last on the APC Back-UPS BX750MI?
The battery typically lasts 3-5 years depending on usage and environment. It is user-replaceable using RBC2 battery. Regular self-tests help prolong battery life.
Can I plug a laser printer into the UPS?
It is not recommended for high-wattage devices like laser printers. Laser printers draw high surge power and are not intended for battery backup. Use only for computers and peripherals.
What does the 'Replace Battery' LED mean?
A steady or flashing Replace Battery indicator means the internal battery has reached the end of its life and must be replaced. The UPS will still provide surge protection but will not run on battery during a power outage.
How do I test the UPS unit?
Press and hold the power button for about 2 seconds. The UPS will simulate a power loss and run on battery for a few seconds. If the alarm sounds and LED indicates battery mode, the UPS is working correctly.
Are the USB ports powered even when the UPS is off?
Yes, the two USB ports provide always-on charging for smartphones and tablets, even if the UPS is turned off or in power-saving mode.
What is the maximum load I can connect?
The UPS is rated for 750 VA / 400 W. Do not exceed 400 watts total connected load, or the overload alarm will sound and the UPS may shut down.
How do I silence the alarm?
Press the power button once briefly to mute the alarm when the UPS is on battery. This will silence the alarm for the current power event, but it will re-enable on next event.
Can I connect more than 6 devices?
You can use a power strip plugged into one of the UPS outlets, but ensure total power draw stays under 400W. However, only the outlet labeled Battery Backup provides battery power; others are surge-only.
Why does the UPS beep intermittently?
Intermittent beeps usually indicate the UPS is on battery due to a power anomaly (brownout, surge, or complete outage). It may also beep when battery is low or needs replacement.
How do I replace the battery in the BX750MI?
Disconnect the UPS from AC power and unplug all devices. Open the front panel, remove the old battery, disconnect wires, insert new RBC2 battery, reconnect wires, close panel, and restore power. Then let it charge for 24 hours.
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USER MANUAL Back-UPS BX750MI APC
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Product information
Brand : APC
Model : Back-UPS BX750MI
Category : Inverter