To care for the battery in a portable lamp, avoid heat, do not store it completely discharged for months, use a compatible charger and follow the manufacturer's instructions. All rechargeable batteries lose capacity with use, but good habits can help slow the process.
Use a compatible charger
A USB-C port does not mean that every charger and cable combination is automatically compatible. Use the specifications stated in the manual or product information.
Avoid damaged adapters, cables with loose connectors and chargers from unreliable sources. If the lamp becomes unusually hot, disconnect it and contact the manufacturer.
Avoid high temperatures
Heat accelerates battery wear. Do not leave the lamp:
- Next to a radiator.
- Inside a car in the sun.
- On a very hot surface.
- Exposed to direct sunlight for hours.
- Covered while charging.
Charge it on a stable, ventilated surface.
Do not store it fully discharged
If you will not use the lamp for several weeks or months, partially charge it before storing it. Check it periodically so it does not remain discharged for too long.
If the manufacturer gives a specific storage charge or interval, follow that recommendation first.
Do you need to drain the battery before charging?
With modern batteries, it is generally not necessary to wait until the battery reaches zero every time. Recharge it when convenient. Frequent deep discharges can increase wear.
There is also no need to keep it connected constantly when it already has enough battery for the next use.
Can you use it while charging?
That depends on the design. Some lamps allow use while charging and others do not recommend it. Check the product information and avoid covering the port or putting strain on the cable.
Keep the charging port clean and dry
Dust, moisture and debris can interfere with the connection. Clean the exterior with the lamp switched off and do not insert metal objects into the port.
If the lamp does not declare an IP rating, do not use it in humid environments or leave it outdoors.
How to charge a portable lamp correctly
- Place it on a stable surface.
- Make sure the port and cable are dry.
- Use a compatible charger.
- Connect without forcing the plug.
- Check the charging indicator, if available.
- Disconnect when charging is complete according to the instructions.
Signs that you should stop using it
- Swelling or deformation.
- Unusual smell.
- Excessive heat.
- Burnt or discoloured charging port.
- Sudden drops in battery life.
- Repeated unexpected shutdowns.
Do not open or manipulate the battery yourself. Contact technical support or an authorised service point.
Battery life and brightness level
Maximum brightness consumes more energy. For ambience, medium or low intensity can extend the time between charges.
Honoka and Tomoshibi offer up to 8 hours of battery life depending on the brightness level used. Real performance can also change over time, with temperature and accumulated charge cycles.
How to store it
- In a dry place.
- Away from heat and direct sunlight.
- Without objects placed on top.
- With the cable stored separately and without tension.
- With a partial charge for long-term storage.
Frequently asked questions
Is it bad to charge it every day?
Not necessarily. It depends on use and battery management electronics. Avoid heat and unnecessarily deep discharge cycles.
Can I use my phone charger?
Only if it meets the input specifications accepted by the lamp. USB-C describes the connector, not guaranteed electrical compatibility.
How long does a rechargeable battery last?
It depends on chemistry, quality, cycles, temperature and use. Gradual capacity loss is normal.
What should I do if the battery lasts much less?
Check the charger and cable. If the problem continues, contact the manufacturer to assess servicing or replacement.
Before buying a new model, see our guide to choosing a portable lamp.
Explore our rechargeable portable lamps to compare battery life, formats and recommended use.