POV: Logitech refuses to make a G700S successor so you have to stock up to last the rest of your life : r/MouseReview
Amazon.com: JKPOWER Replacement Battery Case Cover Mouse Case Shell for logitech G700 G700S Mouse Replacement Mouse Battery Cover Battery Case Black : Electronics
Durable Wireless Mouse Battery Back Cover Replacement For Logitech G700 G700S | eBay
Amazon.com: JKPOWER Replacement Battery Case Cover Mouse Case Shell for logitech G700 G700S Mouse Replacement Mouse Battery Cover Battery Case Black : Electronics