They are not exactly the same size as regular non rechargeable 9v batteries, and therefore do not work in the device I bought them for (a wireless in ear monitor body pack) they don't make contact with the terminals inside the unit due to the slightly odd size of the battery.
EBL AA Rechargeable Batteries 4 Pack + Individual Cell π 916 Battery Charger - Combo Deal for Rechargeable AA/AAA Ni-MH/Ni-CD Batteries
35 Review
TalentCell 12V Lithium-Ion Battery Pack For LED Strips, CCTV Cameras & More β Rechargeable With Multi-LED Indicator
44 Review
Arlo Pro 3/4/Ultra/Ultra 2 Rechargeable Battery Charger With LED Display - Dual Station For Arlo Batteries Only
3 Review
Battery Organizer Storage Case With Tester - Holds AA AAA AAAA 9V C D Lithium 3V Batteries (Batteries Not Included)
24 Review