High capacity cells for an Emisar D4? : r/flashlight
New Emisar D4S V2 with Tint ramping & Instant channel switching
Shockli 26650 5500mAh 3.7V li ion rechargeable battery 30A 26650 lithium battery suit for high power flashlight Emisar D4s TC20|Rechargeable Batteries| - AliExpress