These button cell batteries by ASG will power most red dot scopes.
Ag13 Lr44 Alkaline Button Cell Battery Ag13 Lr44 1.5v Button Cell Battery - 50pcs - Aliexpress
Lr44 - ag13 t&e alkaline button cell watch battery ag13 - lr44-10 pack: Buy Online at Best Price in Egypt - Souq is now
Tenergy AG13 LR44 Button Cell Batteries (10-Pack) – Airsoft Atlanta
AG13 Button Cell Alkaline Batteries (Pack of 10 pcs), Accessories & Parts, Batteries, Standard Batteries - Airsoft Superstore
AmVolt- Pack of 24 LR44 Batteries AG13 SR44 357 303 Premium Alkaline Non Rechargeable Button Battery, 1.5 Volt Small Batteries for Watches Clocks & Electronic Devices : Electronics
Ag13 Lr44 Alkaline Button Cell Battery Ag13 Lr44 1.5v Button Cell Battery - Button Cell Batteries - Aliexpress
AG13 ALKALINE BATTERIES 10-PACK
ASG battery AG13/LR44 (1,5v) (10-Pack)
AG13/LR44 Alkaline Button Cell Battery - 10 pack
AG13 Battery (LR44, L1154, SR44, 357)
ASG 17164 Red Laser Compact for Gun - Light Up Your Airsoft Game - Phenix Airsoft
ASG 11.1v 1000mAh 25C Lipo Stick Battery - Deans Connector
ASG A680 Pro Airsoft Battery Charger, Fox Airsoft
Batteries & Chargers - Dave's Custom Airsoft Ltd