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Back(https://www.bulgin.com/products/pub/media/bulgin/data/Battery_holders.pdf Comfortable Electronic CR2450 battery holder, Keystone P/N 2468, http://www.keyelco.com/product-pdf.cfm?p=1033 AAA battery holder for 2020, 2025 and 2032 coincell batteries. Http://www.keyelco.com/product-pdf.cfm?p=798 Keystone type 2998 battery holder coin.
- , length*diameter=3.2*2.6mm^2, , http://www.diodes.com/_files/packages/T-1.pdf.
- 205-00051 pitch 5mm size.