CBL328 - Power bank BlueBuilt - Free user manual and instructions
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| Product Type | External Battery / Power Bank |
| Brand | BlueBuilt |
| Model | CBL328 |
| Battery Type | Lithium-ion |
| Capacity | 10000mAh (37Wh) |
| Input Port | USB-C (5V/2A) |
| Output Port 1 | USB-A (5V/2.1A) |
| Output Port 2 | USB-C (5V/3A) |
| Total Output | Max 5V/3A (15W) |
| Charging Time | Approx. 5-6 hours |
| Dimensions | Approx. 150 x 70 x 15 mm (5.9 x 2.8 x 0.6 in) |
| Weight | Approx. 250g (8.8 oz) |
| LED Indicators | 4 LEDs for remaining battery level |
| Safety Features | Overcharge, overcurrent, overdischarge, and short-circuit protection |
| Operating Temperature | 0°C to 45°C (32°F to 113°F) |
| Storage Temperature | -20°C to 60°C (-4°F to 140°F) |
| Care and Cleaning | Wipe with a soft, dry cloth; avoid water and abrasive cleaners |
| Spare Parts | No user-replaceable parts; contact customer support if needed |
| Repairability | Non-serviceable device; do not attempt to open |
| Package Contents | Power bank, USB-C charging cable, user manual |
| Warranty | 2-year limited warranty |
Frequently Asked Questions - CBL328 BlueBuilt
How can I check the remaining battery level of the power bank?
Press the power button to display the LED indicators. The number of lit LEDs shows the approximate charge level from 25% to 100%.
Can I charge multiple devices simultaneously?
Yes, the CBL328 has two output ports (USB-A and USB-C) and can charge two devices at the same time, with a maximum total output of 15W.
How long does it take to fully charge the power bank?
It takes approximately 5 to 6 hours with a compatible 5V/2A adapter. Using a lower-rated adapter will increase charging time.
How many times can I charge my smartphone?
With a 10000mAh capacity, it can charge most smartphones about 2 to 3 times, depending on the phone's battery size and usage.
Is it safe to carry the power bank on an airplane?
Yes, most airlines allow power banks with a capacity below 100Wh in carry-on luggage. This unit is rated at 37Wh, so it is permitted.
Does the power bank support fast charging?
It supports standard 5V charging at up to 3A. It does not support proprietary fast charging protocols such as QC or Power Delivery.
What do the LED indicators mean?
The four LEDs represent residual capacity: 1 LED = 0-25%, 2 LEDs = 25-50%, 3 LEDs = 50-75%, 4 LEDs = 75-100%. During charging, they blink.
Can I use the power bank while it is being charged?
Yes, it is possible to use it as a pass-through charger, but charging time and efficiency may be reduced.
How should I clean and store the power bank?
Clean with a soft, dry cloth. Store in a cool, dry place away from direct sunlight and high temperatures. Do not expose to water.
What should I do if the power bank stops charging or dissipates?
First, try a different cable and adapter. If the issue persists, contact BlueBuilt customer support. Do not attempt to open or repair it yourself.
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USER MANUAL CBL328 BlueBuilt
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Product information
Brand : BlueBuilt
Model : CBL328
Category : Power bank