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Blue rectangular lithium-ion battery with smooth finish, 68.5 by 18.6 by 18.6 millimetres

Cameron & Co

Cameron & Co DS-CS-MAR389SL 3.7V 2.6Ah Li-ion Blue GPS Battery

SKU CH-NQE7-M6FJ1

Replacement 3.7V 2.6Ah lithium-ion battery for MARES Genius Air, ICON Genius and ICON HD GPS navigators

  • Product typeGPS Batteries
  • Compatible with MARES Genius Air ICON HD GPS
  • 6 Ah capacity extends dive-computer runtime
  • 7 V 9.62 Wh lithium-ion power pack
  • Exact-fit dimensions 68.50 x 18.58 x 18.60 mm
  • Replaces original MARES part numbers 44200755 44201389

Cameron & Co DS-CS-MAR389SL 3.7V 2.6Ah Li-ion GPS

This 3.7 volt lithium-ion battery delivers 2.6 Ah capacity for MARES Genius Air, ICON Genius and ICON HD navigators. It replaces original part numbers 44200755 and 44201389 with a direct-fit blue cell measuring 68.50 by 18.58 by 18.60 mm. Divers and marine navigators who need a reliable power source for these specific models will find it matches the factory specification. It is not for owners of other MARES computers or third-party GPS units that use different battery form factors or voltage ratings.

Upgrade from depleted or ageing original cells

When the factory pack no longer holds a full day of dive logs or the navigator shuts down early, this 2600 mAh replacement restores the original 9.62 Wh runtime. The jump is worth it if the device still functions but the battery has degraded after repeated charge cycles. It will not add extra capacity beyond the stock rating, so users needing longer endurance between charges must look at external power options instead.

Straightforward user installation

The pack slides into the existing battery compartment without tools or soldering. Align the polarity marks, seat the cell firmly and close the housing latch to maintain the water seal. The most common issue is trapping a gasket or misaligning the contacts, which can cause leakage or a no-power condition. Verify the O-ring sits cleanly before each dive.

How it compares

Measured against everything we stock in GPS Mounts & Accessories, at today’s prices. Recalculated every night.

Price $12.99
Cheaper than about 60% of the 716 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-MAR389SL
Product typeGPS Batteries

Questions about this item

What are the exact dimensions of the DS-CS-MAR389SL battery so I can confirm it fits my MARES GPS unit?

The battery measures 68.50 mm in length, 18.58 mm in width and 18.60 mm in thickness, matching the original MARES 44200755 and 44201389 cells.

How do I install the replacement battery in my Genius Air or ICON HD, and what step is commonly missed?

Open the battery compartment, disconnect the old pack, connect the new DS-CS-MAR389SL plug observing the keyed polarity, then reseal the cover; the step often missed is ensuring the O-ring sits flat before tightening.

What indicates the 3.7 V 2.6 Ah Li-ion cell needs replacing after extended dive use?

When a full charge delivers noticeably shorter bottom time or the GPS powers off earlier than usual, the 2600 mAh capacity has degraded and the blue DS-CS-MAR389SL should be swapped.

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