SeaLife Cameras

SeaLife ReefMaster RM-4K Spare Battery

Spare battery for SeaLife ReefMaster RM-4K Underwater Camera The powerful 3.8V 900mAh 3.42Wh Rechargeable Li-Ion Battery is good for 2+ hours of operation. The battery can be charged inside the camera through a USB cable and wall charger. Fits SeaLife ReefMaster RM-4K Camera 3.8V 900mAh 3.42Wh Rechargeable Lithium Ion Battery Note: Air Shipping is not available for this battery.

SeaLife ReefMaster RM-4K Spare Battery - Main image
$23.97 $39.95 In stock

Category: Batteries & Chargers

The SeaLife ReefMaster RM-4K Spare Battery is a replacement battery for the SeaLife ReefMaster RM-4K camera. Keep a spare on hand so you can continue shooting during your dive sessions.

  • Product name: SeaLife ReefMaster RM-4K Spare Battery
  • Category: Batteries & Chargers
  • SKU: SL3504
  • Option: Standard
  • Compatible with the SeaLife ReefMaster RM-4K camera
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Customer Reviews (5.0 / 5 · 5 reviews)

Benjamin X. ★★★★★

I've been burned by cheap knock-off batteries dying mid-dive, so getting this genuine spare that fits the camera perfectly was a relief. It's held its charge for weeks between trips, which is exactly what I need as a backup.

Zoe ★★★★★

I swapped this in between dives and it held a full charge for over an hour of 4K recording, which was a relief. The battery clicks in securely and didn't budge even in rough currents.

Stella ★★★★★

Finally got to use this on a liveaboard trip and it lasted through three full dives without any issues. The battery indicator on the camera showed a steady charge the whole time. Glad I had a backup for my afternoon dives.