Replacement battery for Credit Card Reader. Specifications: 2600mAh, 3.7V, Li-ion. Compatible with: Credit Card Reader. Replaces: 10-B106-100201, BT350, DT350, Widefly 10-B106-100201, Widefly BT350, Xplore DT350. Widefly replacement battery designed for Credit Card Reader devices. A precise, secure fit you can rely on.