Frequently Asked Questions

Rated Capacity (Usable Power) is the energy your power bank can actually deliver to your devices. Due to energy loss during charging, usable power is always lower than the labeled battery capacity.

• Voltage Conversion: The internal battery operates at 3.7V, but most devices require 5V, leading to energy loss during conversion.
• Heat and Circuit Loss: Energy is consumed by the power bank’s circuits and dissipated as heat.
• Real-World Factors: Cable quality and device type can further reduce efficiency.

• Battery Capacity (Wh) = Capacity (mAh) × Voltage (3.7V) ÷ 1000
• Example: A 10,000mAh battery = 10,000 × 3.7 ÷ 1000 = 37Wh

Rated capacity is the actual energy a power bank delivers to devices and is calculated as:

• Rated Capacity (mAh) = Battery Capacity (Wh) ÷ Output Voltage (5V) × Efficiency (%)
• Example: A 10,000mAh battery with 85% efficiency = 37 ÷ 5 × 0.85 × 1000 ≈ 6,290mAh

Yes! Use this formula for a quick estimate:
Rated Capacity ≈ Battery Capacity × 3.7 ÷ 5 × Efficiency (%)

Many Energizer Power Banks are plug-and-power and will start charging automatically when a device is connected. Otherwise, press the power button once to start charging or check the battery level. To manually turn it off, press and hold or double-press the power button.

If not used frequently, it is recommended to check the charge level and recharge it to 50% - 75% every 3 to 6 months. This helps maintain battery health and prevents deep discharge from long-term inactivity.

Ensure the cable is securely connected and undamaged. Try using a different cable. * Check Power Bank Charge: Make sure the power bank itself has sufficient charge. * Reset: Some models can be reset by simultaneously holding the power button and another button; check your product manual. * Low Current Devices: Some low-power devices (like Bluetooth earbuds) may require activating a Low Current Mode on the power bank to charge them.

Ensure the cable is securely connected and undamaged. Try using a different cable. * Check Power Bank Charge: Make sure the power bank itself has sufficient charge. * Reset: Some models can be reset by simultaneously holding the power button and another button; check your product manual. * Low Current Devices: Some low-power devices (like Bluetooth earbuds) may require activating a Low Current Mode on the power bank to charge them.

Immediately stop charging and disconnect all cables. Wipe the exterior with a dry cloth and place it in a cool, dry, well-ventilated area for at least 24 hours until all ports are completely dry before attempting to charge or use it again. Never charge a wet device.

Yes, most quality power banks are equipped with an auto shut-off function. The power bank will automatically turn off to save power once the connected device is fully charged, or if no device is connected for a certain period (usually 30 seconds to 1 minute).

It is not recommended. Moisture and humidity can seep into the charging ports or casing, damaging internal circuits and posing a safety risk. Always use and store your power bank in a dry environment.

Look for the LED Indicator Lights or the LCD Digital Display. Blinking lights or a flashing percentage indicate charging. A solid display (e.g., 4 solid lights or 100%) indicates a full charge.

Yes, many models support pass-through charging (charging the power bank and connected devices simultaneously). However, for the fastest speed, we recommend charging them separately.

Keep it at room temperature, with approximately 50% charge, and out of direct sunlight to maximize its lifespan.

To achieve max PD speeds (e.g., 65W or 100W), you must use a USB-C to USB-C cable rated for high wattage. Standard cables may not support the necessary current. Look for cables clearly marked as supporting 60W, 100W, or higher.

Stop use immediately and disconnect all devices. This is a potential hazard. DO NOT pierce it or throw it in the regular trash. Contact your supplier or take it to a professional battery recycling center for safe disposal.

Disconnect from all power sources first. Use a dry, lint-free cloth or an alcohol wipe to gently clean the exterior. Never allow liquid to enter the charging ports.

Stop use immediately and disconnect all devices. This is a potential hazard. DO NOT pierce it or throw it in the regular trash. Contact your supplier or take it to a professional battery recycling center for safe disposal.

Immediately stop use and disconnect all cables. Do not attempt to charge or turn on the device. Place it in a dry, well-ventilated area for several days to allow moisture to evaporate. If serious water damage is confirmed, do not reuse it and follow professional battery disposal methods.

Most power banks should be used and stored in a cool, dry environment. Avoid extreme temperatures (e.g., leaving it in a hot car, direct sunlight, or near a heat source) as high temperatures accelerate battery degradation and increase risk. The recommended range is typically between $8^circ ext{C}$ and $35^circ ext{C}$.

Modern, high-quality power banks typically have auto shut-off protection to prevent overcharging. However, to prolong battery life and enhance safety, it is best practice to unplug the power bank once it is fully charged to avoid prolonged idle charging status.

Generating a slight amount of heat is normal during the energy conversion process. If the device or power bank becomes excessively hot (uncomfortable to touch), immediately stop charging and disconnect the cables. This may indicate a problem with the cable, charger, or the device itself.

Disconnect from all power sources first. Use a dry, lint-free cloth or an alcohol wipe to gently clean the exterior. Never allow liquid to enter the charging ports.

It is recommended to charge the power bank to about 50% to 75% capacity and store it in a cool, dry place. Storing a battery fully charged or completely depleted is detrimental to its long-term health.

Yes. All lithium batteries, including power banks, must be carried in your carry-on luggage; they are strictly forbidden in checked luggage.

Charging your power bank while on the plane is usually not allowed, as it may pose a safety risk. However, some airlines may provide USB charging ports for devices, but check with the crew for specifics.

Most airlines do not allow power banks in checked luggage due to fire safety concerns. Always carry your power bank in your hand luggage.

Yes, you can bring more than one power bank, as long as the total capacity of each individual power bank doesn’t exceed the airline’s limit (usually 100Wh). Make sure to follow the airline’s rules for multiple devices.

It is not recommended to use your power bank on the plane. Please follow the airline’s regulations and always adhere to the instructions given by the cabin crew.

Charging your power bank while on the plane is usually not allowed, as it may pose a safety risk. However, some airlines may provide USB charging ports for devices, but check with the crew for specifics.

Most airlines allow power banks with a capacity up to 100Wh without requiring special approval. Power banks between 100Wh to 300Wh are allowed, but they must be checked in. Power banks over 300Wh are usually banned from flights.

Generally, no. Most Portable Power Stations exceed the typical 100 Wh airline limit and cannot be carried on.

Use only certified or authorized chargers and cables to prevent damage to the battery and your devices.

Yes. Fully charging the battery before first use can help maximize its lifespan.

Stop using the product immediately. Battery swelling can occur due to aging or long-term low power. Recycle it at a certified facility.

No. High temperatures—especially in summer—may exceed safe storage levels and could lead to battery hazards. Always take the power bank with you when leaving the vehicle.

Keep the product away from water, heat, fire, sharp objects, direct sunlight, and severe impacts or drops.

No. Only insert proper USB connectors into the USB ports. Do not insert any other objects.

Yes. Once fully charged, the power pack automatically shuts off to save power and protect the battery.

Yes. The battery may feel slightly warm during charging or recharging.

Do not clean the battery with water or chemical cleaners. Wipe the exterior with a lightly damp cloth or napkin.

Battery performance will naturally decline after about one year of regular use.

No. Any intentional or physical damage to the battery is not covered by the warranty.

Yes, it is recommended. Charging fully helps to calibrate the battery for accurate power display.

Try changing the charging cable and the wall adapter/charger. Also, check the charging port for debris.

Inspect/replace the charging cable and adapter. Ensure the input/output ports are clean and undamaged. Verify the power bank is at a moderate temperature.

STOP USE IMMEDIATELY. A visible bulge or swelling is a confirmed battery failure. Do not charge or use it. Place it on a non-flammable surface and contact customer service.

Do not put it in regular trash. Power banks contain lithium batteries and must be taken to a proper electronic waste (e-waste) or battery recycling center. Tape the metal terminals before recycling.