Specifications

10
<SM-BTR1: Battery>
• The battery is uncharged at the time of purchase. Before riding, be sure to charge the battery until it is fully charged.
• When storing the battery away, remove the battery from the bicycle and install the terminal cover first.
• If the battery is stored away while the battery charge is 50% or higher (the indicator is illuminated green), the battery will
last longer.
It is recommended that you check the condition of the battery about once every half a year.
• If the battery is stored in cold locations, the performance of the battery may drop and the length of time that it can be used
may become shortened.
• The battery is a consumable item. The battery will gradually lose its capacity for charging after repeated use and after time
has passed. If the length of time that the battery can be used becomes extremely short, it has probably reached the end of
its life, and so you will need to purchase a new battery.
• The life of the battery will vary depending on factors such as the storage method, the usage conditions, the surrounding
environment and the characteristics of the individual battery pack.
• The charging time is approximately 1.5 hours. (Note that the actual time will vary depending on the amount of charge
remaining in the battery.)
• If the battery feels difficult to insert or remove, apply specified grease (DURA-ACE grease) to the part that touches the
O-ring at the side.
• For the DURA-ACE (7970), the bicycle can be ridden for approximately 1000 km on a full charge. For the ULTEGRA (6770), the
riding distance will be shorter. (Approximately 30% less according to tests carried out by Shimano.)
• Charging can be carried out at any time regardless of the amount of charge remaining. Always be sure to use the special
battery charger to charge the battery until it is fully recharged.
• If the battery has become fully spent, charge it as soon as possible. If you leave the battery without charging it, it will cause
the battery to deteriorate.
• If you will not be riding the bicycle for a long period, remove the battery from the bicycle and recharge it periodically. In
addition, take care not to let the battery become fully spent.
Information on disposal in countries other than the European Union
This symbol is only applicable within the EU.
Used batteries should be disposed of in accordance with local laws and
regulations, or ask the place of purchase or a bicycle dealer for disposal.
<ST-6770: Dual Control Lever>
• Be sure to rotate the front chainwheel when carrying out any lever operations which are related to gear shifting.
<RD-6770: Rear Derailleur>
• If the amount of looseness in the links is so great that adjustment is not possible, you should replace the derailleur.
• Periodically clean the derailleur and lubricate all moving parts and pulleys.
• If there is a large amount of play in the pulleys which causes worrying noise while riding, replace the pulleys.