Ultraslim 3000 - Power bank CoolBox - Free user manual and instructions
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| Product Type | Portable Power Bank |
| Brand | CoolBox |
| Model | Ultraslim 3000 |
| Battery Capacity | 3000 mAh |
| Input Interface | USB-C (5V/2A) |
| Output Interface | USB-A (5V/2.1A) |
| Charging Time | Approximately 2-3 hours |
| Dimensions | 105 x 52 x 9 mm |
| Weight | 98 g |
| LED Indicators | 4 LED power level indicators |
| Material | Aluminum alloy body |
| Protection | Overcharge, overcurrent, and short-circuit protection |
| Operating Temperature | 0°C to 45°C |
| Storage Temperature | -10°C to 60°C |
| Charging Cable | Included USB-C cable (30 cm) |
| Compatibility | Smartphones, tablets, and other USB devices |
| Maintenance | Clean with a soft, dry cloth |
| Safety | Do not expose to water or heat |
| Repairability | Integrated battery; not user-replaceable |
Frequently Asked Questions - Ultraslim 3000 CoolBox
What is the capacity of the CoolBox Ultraslim 3000?
The Ultraslim 3000 has a capacity of 3000 mAh, ideal for a quick top-up of your phone.
How do I charge the power bank itself?
Use the included USB-C cable to connect the power bank to a USB wall charger. It takes about 2-3 hours to fully charge.
Can I charge two devices at the same time?
No, the Ultraslim 3000 features a single USB-A output port, so it can charge only one device at a time. For simultaneous charging, consider a model with multiple ports.
How do I know when the power bank is fully charged?
The LED indicators show the charge level. When all four LEDs are solid, the power bank is fully charged.
Is it safe to leave the power bank charging overnight?
Yes, the built-in overcharge protection automatically stops charging when the battery is full, preventing damage.
What devices can I charge with this power bank?
You can charge any device that supports USB charging, including smartphones, Bluetooth earphones, and other small gadgets.
Does the power bank support fast charging?
The USB-A output delivers up to 5V/2.1A, which is sufficient for standard charging. It does not support Quick Charge or USB PD.
How should I clean and maintain the power bank?
Wipe the exterior with a soft, dry cloth. Avoid using liquids or abrasive materials. Keep the ports free of dust.
What safety features are included?
The power bank includes overcurrent, overcharge, and short-circuit protection to ensure safe operation.
Are replacement parts available?
The internal battery is integrated and not user-replaceable. If you experience issues, contact CoolBox support.
User questions about Ultraslim 3000 CoolBox
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USER MANUAL Ultraslim 3000 CoolBox
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Product information
Brand : CoolBox
Model : Ultraslim 3000
Category : Power bank