We not noly provide customers high quality cells and battery packs, but also our abundant battery experience engineers provide customers correct battery solution according to their products design. All our batteries have ul, ce and rohs certificate. Yt2410eb 24v 10ah 78*86*370 2.7kg Yt3610eb 36v 10ah 75*105*36mm 3.8kg Yt4810eb 48v 10ah 104*220*67 3.8kg