DIVEVOLK Spare Battery for SL20 Diving Light (21700)

Never cut a dive short due to a dead light. The DIVEVOLK Spare Battery for the SL20 Dive Light uses a high-capacity 21700 lithium cell — the same cell format used in the SL20 — so you always have a fully charged replacement ready to swap before your second dive. Simply pre-charge the spare, swap it out at the surface, and you are ready to go without waiting for a full recharge cycle.

Designed as an exact replacement for the SL20, it maintains the same output performance and burn time as the original. Essential for multi-dive days, liveaboards, or any session where you need your lights running at full power from start to finish.

Key Features

• Direct replacement battery for the DIVEVOLK SL20 underwater video light
• 21700 lithium cell format for high capacity and consistent output
• Allows immediate light swap between dives without waiting to recharge
• Ideal for multi-dive days, liveaboards, and extended shooting sessions

Compatibility