Amazon.com: Apple iMac 21.5in 2.7GHz Core i5 (ME086LL/A) All In One Desktop, 8GB Memory, 256GB Solid State Drive, MacOS 10.12 Sierra (Renewed) : Electronics
Ultralife LS14250C REPLACEMENT G5 POWER APPLE MAC LITHIUM 3.6V IMAC BATTERY | eBay
Portable AA Battery Travel Charger Compatible with Apple MacBook Pro 2018/2017/2016/13"/16"/iMac with LED Light! (Takes 2 AA Batteries,USB Type-C) [WHITE] - Walmart.com
Change Apple Wireless Keyboard batteries - Apple Support