MLB-300 - Battery Mestic - Free user manual and instructions
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| Product type | External battery / portable power station |
| Brand | Mestic |
| Model | MLB-300 |
| Battery capacity | 300 Wh (approx. 81,000 mAh at 3.7 V) |
| Maximum output power | 300 W (600 W peak) |
| Output types | AC outlet (230 V), 2 USB-A ports, 1 USB-C port, 1 12V cigarette lighter socket |
| Charging input | 19 V / 3.5 A AC adapter, 12-30 V solar panel (max 100 W) |
| Dimensions (L x W x H) | 25 x 15 x 20 cm |
| Weight | 3 kg |
| Housing material | Flame-retardant ABS plastic |
| Cell types | Lithium-ion |
| Battery level indicator | LED display with percentage |
| Built-in protections | Overcharge, overdischarge, short circuit, overheating |
| Operating temperature | -10 °C to 40 °C |
| Maintenance and cleaning | Disconnect before cleaning. Use a dry, lint-free cloth. Do not use abrasive products. |
| Safety instructions | Do not expose to water, fire, or extreme temperatures. Use in a well-ventilated area. |
| Spare parts and repairability | Contact Mestic customer service for cables or adapters. The internal battery is not user-replaceable. |
| Included accessories | AC power cable, USB-C cable, user manual |
| Warranty | 2 years |
Frequently Asked Questions - MLB-300 Mestic
How to charge the Mestic MLB-300 battery?
Use the supplied AC adapter by plugging the cable into the DC 19V input of the device. You can also charge via a compatible solar panel (12-30 V, max 100 W). Full charging time is about 4 to 5 hours with the AC adapter.
What devices can I power with the MLB-300?
The battery can power any device with a continuous power consumption not exceeding 300 W. Examples: smartphone, tablet, laptop, small refrigerator, LED TV, lamps, etc. The starting current of motorized devices must not exceed 600 W.
How long does the battery last once charged?
Battery life depends on the power consumption of connected devices. For example, a smartphone (10 Wh) can be charged about 30 times, a laptop (60 Wh) about 5 times. Refer to the manual to estimate duration based on your usage.
Can I use the battery while it is charging?
Yes, the MLB-300 supports a pass-through function that allows powering devices while connected to mains. This avoids power interruptions between uses.
What outlets are available on the MLB-300?
The device has a 230 V AC outlet, two USB-A ports (5 V / 2.4 A each), one USB-C port (5 V / 3 A), and a 12 V / 10 A cigarette lighter socket for automotive accessories.
How do I know when the battery is fully charged?
The LED display shows the charge level as a percentage. When 100% is displayed, the battery is full. Charging stops automatically to prevent overcharging.
What to do if the device overheats?
The battery automatically shuts off in case of overheating. Disconnect devices and let it cool in a ventilated area for 30 minutes before reusing. Do not cover the device during operation.
Can I take the MLB-300 on an airplane?
Lithium-ion batteries of 300 Wh exceed the 100 Wh limit generally allowed in cabin. Check your airline's regulations for checked baggage. In Europe, it may be transported with prior authorization.
How to clean the Mestic MLB-300 battery?
Disconnect all cables. Use a soft, dry cloth to wipe the surface. Never use liquid, alcohol, or detergent. Keep connection ports free of dust.
Can the battery be repaired if it fails?
In case of a defect, contact Mestic customer service. Never open the device yourself, as lithium-ion batteries are dangerous and internal components are not user-serviceable. The warranty covers hardware failures for 2 years.
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USER MANUAL MLB-300 Mestic
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Product information
Brand : Mestic
Model : MLB-300
Category : Battery