What type of battery is in Di2?

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Li-Ion battery
Product Data. The power house of Dura-Ace (7970) and Ultegra (6770) Di2 is a long-life 7.4V Li-Ion battery that is both compact and reliable, taking shifting effort away from you.

How big is a Di2 battery?

Battery capacity is the same as with the original SM-BTR1 pack but the tubular shape measures in at a much tidier 155mm length and slim 16mm diameter.

Where is the Di2 battery?

The Shimano BT-DN110 internal Di2 battery can be installed in a number of places: the fork, MTB handlebar, a really long stem.. anywhere that fits really. You will most often find it installed in the seatpost and for good reason: this way it is close to junction B and the bike’s derailleurs.

Are all Di2 batteries the same?

Versions. There are two different versions of the BT-DN110 Internal battery available, the BT-DN110 and BT-DN110-A. The latter is grey, not black, newer and slightly better built. The functionality of both batteries is the same.

How often do you need to replace Di2 battery?

The easy answer is: when it no longer holds charge or depletes very quickly. Shimano say their battery is rated for 300 full charge cycles. This means that if you charge the battery every other week it should be good for about 11 years.

How long should a Di2 battery last?

between 2000 and 5000 kilometers
A modern Di2 battery will last between 2000 and 5000 kilometers per charge. This depends a bit on how often you shift and also your shifting style. The front derailleur has to work harder than the rear derailleur and therefore also consumes more energy.

How do you install a Di2 battery on a seatpost?

Your seatpost will have come with a Di2 battery collar (holder). It will probably already be installed, but if it isn’t, install it. Now take the two black adapter plates that came with your battery and put them around the battery and slide the battery into the seatpost collar until the adapters slide into place.

Do I need A seatpost battery holder for my seatpost?

If you have a Di2 compatible seatpost like the PRO Vibe (carbon), you won’t need any additional seatpost battery holder. Your seatpost will have come with a Di2 battery collar (holder). It will probably already be installed, but if it isn’t, install it.

Can you plug a Shimano battery into a seatpost?

Ritchey offers a novel – and cheap – solution for stuffing a Shimano SM-BTR2 battery inside your frame. For just US$10, these plastic bits will essentially turn the battery into the seatpost equivalent of a bar end plug Riders using older Shimano Dura-Ace Di2 7970 groups can still go with an internal battery.