Battery pack, 5-pack, 13.5 V - 50 Wh, alkaline

This slim battery can be used inside the main canister of your Nortek instrument. It is also possible to place four of these small batteries in an external battery canister. This battery is compatible with Aquadopp, Aquadopp Profiler, Aquadopp Z-Cell and Vector instruments. This particular battery is suitable for the small housing (390 mm length) for the previously mentioned instruments. Standard instrument will typically use the 100 Wh alkaline battery packs.