{"product_id":"shimano-di2-bt-dn110-a-internal-battery","title":"Shimano Di2 BT-DN110-A Internal Battery","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano Di2 BT-DN110-A Internal Battery\u003c\/strong\u003e sits inside your frame or seatpost and keeps your electronic shifting running — this is the battery unit itself, without mounting hardware, cables, or a charger.\u003c\/p\u003e\n\n\u003cp\u003eCompatibility matters here. The BT-DN110-A works with Shimano's E-Tube Di2 systems — it is not compatible with first-generation Di2 setups that predate the E-Tube architecture. You'll need a separate EW-SD50 wire to connect it to your Di2 network, and a compatible charger to keep it topped up. \u003c!-- VERIFY: confirm full compatibility list for BT-DN110-A across current Di2 groupsets (e.g., R9250, R8150, MT900) --\u003e When the charge runs low, your junction box will flag a warning before you lose shifting function — front derailleur drops out first, giving you a clear signal to plug in before the system shuts down fully.\u003c\/p\u003e\n\n\u003ch3\u003eShimano Di2 BT-DN110-A Internal Battery Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Shimano E-Tube Di2 systems (not compatible with first-generation Di2)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Internal — fits inside frame tubes or compatible seatposts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes:\u003c\/strong\u003e Battery unit only — cables, charger, and mounting hardware sold separately\u003c\/li\u003e\n  \u003c!-- VERIFY: voltage, capacity (mAh\/Wh), and charge time for BT-DN110-A specifically --\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":43706054475820,"sku":"IBTDN110A7","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-di2-bt-dn110-a-internal-battery-2530308.jpg?v=1771298115","url":"https:\/\/ricycles.com\/products\/shimano-di2-bt-dn110-a-internal-battery","provider":"RA Cycles","version":"1.0","type":"link"}