Genesis Manual Rev2.0 Copyright 2020, Nellis Engineering, Inc.
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should receive a partial charge to bring the voltage into the storage range of 62V to 67V if the
voltage is lower. Under normal operation, it is recommended to plan your dives so that the
batteries are only discharged about 80% of the available capacity, to avoid deep cycling the cells,
which decreases their service life. Battery voltage can be checked via the Bluetooth phone app or
the Sentry DPV Dashboard will read the battery voltage while charging, if installed.
The charger output is approximately 275Watts. This means that during the bulk charge period
(first 90% of capacity), the 2.1 battery will increase about 30% of the total capacity per hour up to
approximately 90% and the 2.2 batteries will increase about 15% per hour, up to approximately
90%. During the last 10% of the charge, the current decreases as it approaches full charge and the
final 10% of charge takes approximately 1.5 and 3.0 hours to finish, respectively. As an example
for the Genesis 2.1, if during a dive, you used 50% of the battery capacity and then recharged it for
one hour during your surface interval, the battery capacity would be at approximately 80% for the
next dive.
Tow Cord
The tow cord comes installed between the left side of the handle mounting bracket and the nozzle
strut at the 5 o'clock position when viewed from behind with the handle horizontal at 12 o'clock. If
you prefer that the tow cord be mounted between the 3 and 9 o'clock positions Extra screws are
provided. The proper length screw MUST be used to ensure the correct thread engagement and
that they are not too long, so as to damage the nozzle by protruding in to the inner diameter of the
nozzle. Ensure the correct length screw is used between the nozzle/strut connections. A #10-24 x
7/8 inch thread length screw is used to attach the struts to the nozzle with no stainless plate
installed. A #10-24 x 1.0 inch thread length screw is used where one stainless plate is attached. A
#10-24 x 1-1/8 inch thread length screw is used where two stainless plates are attached. Installing
too long of a screw length will result in the screw piercing the inside diameter of the nozzle and
cracking the material around where it exits. Torque to 30 in-lb.
Figure 7 - Taut line hitch sequence
