The casing is made of a hard anodized aluminium .
The aluminium alloy used in ACCU THERMO is light, durable and resistant to corrosion in sea water.
Additionally, the aluminium elements of ACCU THERMO have been covered with a protective layer of a hard anode. It makes the battery even more resistant to wear and mechanical damage.
All graphics and inscriptions on the casing are laser-engraved, which makes them easy to read, as well as highly durable.
The ACCU THERMO 24 Special casing is secured with two O-rings.