Synergy Digital CMOS/BIOS Battery, Works with Sony Varta 2/V30H CMOS/BIOS, (Ni-MH, 2.4V, 20 mAh) Ultra High Capacity, Compatible with Sony 2/V15H Battery - Walmart.com
10PCS NEW Battery For VARTA 2/V15H 2 / V15H 2.4V 15mah NI MH battery memory Button batteries Free Shipping|Button Cell Batteries| - AliExpress
Varta V15H Button cell (rechargeable) 15H NiMH 15 mAh 1.2 V 1 pc(s) | Conrad.com
Synergy Digital CMOS/BIOS Batteries, Compatible with Sony Varta 2/V30H CMOS/BIOS, (Ni-MH, 2.4V, 20 mAh), Replacement for Sony 2/V15H Battery, Combo-Pack Includes: 4 x SDBU-H6926 Batteries