Shimano Ultegra FC-R8100 HTII crankset with power meter, 170 mm, 50/34T, 2x12, without cover

WARNING
Information on the installation, adjustment, and replacement of products not found in the user manual can be obtained at the place of purchase or from a distributor. The dealer's manual for professional and experienced bicycle mechanics can be found on our website (https://si.shimano.com).
For safety, thoroughly read this "user manual" before use, follow it for proper use, and keep it for future reference.
The following instructions must always be followed to prevent personal injury and physical damage to equipment and surroundings. Instructions are classified according to the degree of danger or damage that may occur in case of improper use of the product.
DANGER - Failure to follow instructions will result in death or serious injury.
WARNING - Failure to follow instructions could result in death or serious injury.
CAUTION - Failure to follow instructions could result in personal injury or physical damage to equipment and surroundings.

DANGER
- When charging the battery, use the designated charging cable. Using any other items may lead to fire, overheating, leakage, or damage to the connected PC.
- Prevent the charging cable from getting wet and do not touch or hold it if it is wet or if your hands are wet. Failure to do so may result in operational problems or electric shock.
- Use an AC adapter with a USB port with a voltage of 5.0 V DC and a current rating of at least 0.5 A DC. If you use an adapter with a current rating less than 0.5 A, the AC adapter may overheat and may result in fire, smoke, heating, damage, electric shock, or burns.
- Do not heat the battery or throw it into fire. Failure to do so may result in fire or rupture.
- Do not use or leave the battery in hot or humid places where the battery may be exposed to direct sunlight, in a closed vehicle on a hot day, or near a heater. Failure to do so may result in leakage, overheating, or rupture, leading to fire, burns, or other injuries.
- Do not disassemble or modify the battery; also, do not directly apply solder to the battery terminals. Failure to do so may result in leakage, overheating, or rupture, leading to fire, burns, or other injuries.
- Do not touch the metal terminals with metal objects, such as hairpins. Failure to do so may result in short circuits, overheating, burns, or other injuries.
- If fluid leaking from the battery gets into your eyes, immediately rinse the affected area with water without rubbing your eyes and then seek medical attention. Failure to do so may result in blindness.

WARNING
- Do not disassemble or modify the product. This may cause the product to malfunction, you may fall unexpectedly and be seriously injured.
- Before riding the bicycle, check that the crank arms are not cracked. If there are any cracks, the crank arm may break and you may fall off the bicycle.
- Be careful not to get parts of your clothing caught in the chain while riding, otherwise you could fall off the bicycle.
- Always grasp the cable plug when connecting or disconnecting the charging cable. Failure to do so may result in fire or electric shock.
- Do not leave this product in an extremely high-temperature environment, such as in a closed vehicle on a hot day, or near a heater. This may lead to the explosion of the built-in battery or the leakage of flammable liquid or gas from it.
- Do not expose this product to extremely low air pressure. This could cause the built-in battery to explode or flammable liquid or gas to leak from it. Air transport of this product is not an issue.
- If the following symptoms occur, stop using the device and contact the place of purchase. Fire or electric shock may occur.
* If acrid-smelling smoke comes from the power plug or the plug gets hot.
* there may be a bad connection inside the power plug.
- If it thunders while charging with an AC adapter with a USB port, do not touch the device, bicycle, or AC adapter. Electric shock may occur if struck by lightning.
- Do not use a USB hub to connect the cable to the PC's USB port. Charging failure or fire due to overheating may occur.
- Be careful not to damage the charging cable. Do not damage them, modify them, forcibly bend them, twist or stretch them, place them near hot objects, place heavy objects on them, or tie them tightly together. If used in a damaged state, fire, electric shock, or short circuit may occur.
- If the battery is not fully charged within 4 hours of charging, stop charging. Failure to do so may result in fire, rupture, or overheating.
- When disposing of this product, follow all federal, state, and local environmental regulations, as it contains a battery. Disposing of this product in fire or a hot oven, or mechanically crushing or cutting it, may lead to the explosion of the built-in battery.
- Do not immerse the product in fresh or salt water, etc., and prevent the terminals from getting wet. Failure to do so may result in fire, rupture, or overheating.
- Do not use the battery outside the specified operating temperature ranges. If the battery is used or stored at temperatures outside these ranges, fire, injury, or operational problems may occur. The operating temperature ranges are listed below.
1. During discharge: -10 °C – 50 °C
2. During charging: 0 °C – 45 °C
- Do not expose the product to strong impact or throw it. Failure to do so may result in rupture, overheating, or operational problems.
- Do not use the battery if it shows fluid leakage, discoloration, deformation, or other atypical signs. Failure to do so may result in rupture, overheating, or operational problems.
- If leaking fluid gets on your skin or clothing, immediately clean them with clean water. Leaked fluid can damage the skin.
- Keep the magnet supplied with this product away from magnetic cards, medical devices, control instruments, etc. This may cause data loss or malfunction.

CAUTION
- Be careful not to touch the teeth of the sprockets. There is a possibility of injury.
- Store in a safe place out of reach of small children to prevent accidental ingestion.
- This product contains a powerful magnet and should be handled with care. There is a risk of trapping and injuring a hand or fingers.
- Prevent grease from adhering to the metal terminals. This may cause conduction failure.
- Do not leave the charging cable connected during maintenance