The original F-POD which took 10 D-cells has now been replaced with a new version which takes 12 D-cells. We no longer manufacture the 10 D-cell version (referred to as F-POD D10). The new F-POD D12 is 50mm longer and runs for at least 5 months on alkaline cells or 9 months on primary (none-rechargeable) lithium cells. In every other way the D12 is identical to the D10.

Polypropylene housing. Depth:  100m (or more for older PODs!)

The image shows the 50mm longer F-POD D12 next to the original F-POD D10 version.

The Lithium Rechargeable F-POD, now referred to as the F-POD R25, is externally identical in length and appearance to the F-POD D12 but takes 25x 21700 lithium cells and runs for 8+ months.

With 5Ah cells, logging alternate minutes, the running time is over 14 months.

To meet vessel safety standards, lithium packs should not be changed at sea. They are in 5 stacks that have built-in short-circuit protection, and diode protection against cells being inserted the wrong way round.

Cells must be bought locally.

Please note that if you are redeploying straight away, and therefore cannot avoid changing to a new set of batteries at sea, you can purchase a second battery holder to allow you to pre-load the cells on land and transport them safely.

Polypropylene housing. Depth:  100m

Easier for deployments by fishers on nets.

3+ months continuous running time.

Takes a shorter version of the F-POD R25's lithium pack to carry 10x 21700 lithium cells.

Cells must be bought locally.

Please note that if you are redeploying straight away with a second set of batteries you can purchase a second battery holder to allow you to pre-load the cells on land and transport them safely.

Polypropylene housing. Depth:  150m

For depths to 2000m

Heavy aluminium housing, as shown. This is supplied with a thick silicone sheath to prevent any metal:metal contacts when deployed.

Battery options are D-cells, which can be alkaline or primary lithium cells. On alkalines the running time is 4-5 months, or 8 months on primary lithiums, and can be nearly doubled by logging alternate minutes - as with all current F-POD versions.

This integral acoustic release will be available in early 2026. It will fit as an alternative to the normal lid on enabled standard F-PODs.

Each POD has its own acoustic release code that is sent by a deck unit and actuates the release which has a 160kg breaking strain line for retrieval of the anchor.

A default release date can be set in the POD before deployment, so the POD would release and remain on a retrieval line. This option can be used without a deck unit.

If the batteries are failing, release is forced so that the POD does not become inaccessible.

This old C-POD is still working normally with a very good calibration result after 15 years of use.

C-PODs are no longer manufactured, but are still in use and there is a supply of replacements as they are released from projects converting to F-PODs.