The only detachable APD cell holder in the world! And that's a copyright!
Do not trust your life to imitations. Only our system is developed with computer manufacturers and meets their stringent approvals. We have developed in conjunction with Bean diving a 4th and 5th cell holder that fits the classic inspiration.
Note - do not change the lock nut supplied by APD, they have special tools that will only fit their nut.
The cell holder has two component parts that pull apart, one side stays in the head so you don't have to break the seal when changing cells the other part holds the cells and battery box and simply pulls out when you need to change cells. It is a secure 3 o-ring push fit and does not come apart unless you need it to. The cell holder is sold in several configurations that are upgradeable without it being returned to us.
All the MOLEX or SMB connectors on the cables are GOLD for the best corrosion protection.