In Stock. Seiko Survey Battery Li-ion Battery Fits Seiko, Dpu3445, Dpu-3445, 7.4v, 2200mah CS-SDP445SL $46.37 All our batteries are brand new, The battery is an equivalent battery to the manufacturers as shown below. They are made with premium Lithium Ion cells and are rated as shown in the specifications. Batteries come in a variety of different formats, often a single model of battery will actually replace hundreds of other models in a multitude of different... Add to cart