The built-in battery in the OneKey hardware wallet uses a Lithium-ion Polymer (Li-ion Polymer) battery.
This is a mature battery type widely used in consumer electronic devices, balancing size, weight, performance, and reliability, making it suitable for long-term use in handheld devices.
Battery Characteristics
Lithium-polymer batteries have a high energy density, allowing them to provide sufficient power in a smaller volume. This enables the device to maintain a slim, portable form factor while meeting the endurance required for daily use.
In terms of voltage characteristics, this battery has high compatibility with common electronic system working voltages, which helps simplify power design, reduce system complexity, and thus enhance overall stability and reliability.
Battery Life Explanation
Battery life is usually measured by the number of "charge and discharge cycles." Under standard testing conditions:
OneKey Pro: Cycle life ≥500 cycles (with ≥80% battery capacity remaining)
OneKey Classic 1S: Cycle life ≥300 cycles (with ≥80% battery capacity remaining)
As the number of cycles increases, the battery will not suddenly fail; instead, its capacity will gradually decrease, and the single-use duration will shorten. This is a normal characteristic of lithium-ion batteries.
In actual use, OneKey is a low-power device with infrequent charging and discharging. Even when battery capacity has significantly decreased, the device can still power on normally via USB to perform critical operations such as asset management and transfer.
Standby and Storage Performance
Under normal conditions, even if the device is fully charged and powered off, it can still be turned on normally after about 7 months.
It should be noted that the actual performance of the battery may vary depending on factors such as ambient temperature, usage frequency, and self-discharge characteristics.
Daily Use and Maintenance Recommendations
To extend battery life and maintain good condition, users are advised to note the following:
Avoid exposing the device to high temperatures for extended periods
It is not recommended to store the device fully charged or completely depleted for long periods
For long-term storage, it is recommended to keep the charge level at approximately 40%–60% in a cool, dry environment
Use official or compliant charging methods for charging
Proper usage and storage habits help slow down battery aging and extend the usable life of the device.