Shandong Zouping Mingbo Power Source Co. Ltd invites power supply experts of Chinese Academy of Sciences as guide, and produces 1/2D2000mAh, 1/2D2500mAh, 2/3D2500mAh, 2/3D3000mAh, 2/3D3500mAh, D4000mAh, D5000mAh, D6000mAh, D6500mAh size ni-cd rechargeable batteries and D8000mAh, D9000mAh size ni-mh rechargeable batteries. We can provide other size and capacity of the battery according to requirement. Our products have passed ISO9001-2000 and Germany Rhine TUV Safety Certificate. 1/2D size diameter is 32.4mm, heigth is 31.2mm. 2/3D size diameter is 32.4mm, heigth is 43.5mm. D size diameter is 32.4mm, heigth is 60.5mm. Good quality and after sales service, we will give the best price. Products are recognized with minbo logo. OEM and ODM services are provided. If you need more information please contact me at any time.