Boat battery run time

Figures shown below are using a Group 27, 115-amp hr. Deep Cycle Battery.

MODEL	VOLTAGE / WATTAGE	AMPS / C.P. / LUMENS	HOURS OF RUN-TIME
AquaStarTM	12VDC, 50-watt	4 / 300,000 / 950	28.7
AquaStarTM	12VDC, 75-watt	6 / 450,000 / 1325	19.1
AquaStarTM	12VDC, 100-watt	8 / 600,000 / 1900	14.4

We recommend using "Deep Cycle Batteries" to power your lights.
"Car" batteries and "Marine Starting" batteries are not designed to be quickly discharged
and recharged on a regular basis. These types of batteries will run down much faster
than a Deep Cycle Battery and your light will not burn as bright or as long as it should.

Run Time

A simple formula to find out how long a light will run off of your particular battery is to
take the batteries "amp-hour rating" and divide it by the average load in amps.
So, a 115-amp hour battery running a 100-watt AquaStar that pulls 8-amps should last
approximately 14.4 hours (115/4) on a 115 amp hour deep cycle battery.

Full Size Deep Cycle Batteries

BATTERY TYPE	AMP HOUR RATING	VOLTAGE	APPROX. COST
TR18-12	18 Amp hours	12 volts	$34.80
TR24-12	24 Amp hours	12 volts	$43.50
TR26-12	26 Amp hours	12 volts	$46.50
TR33-12	33 Amp hours	12 volts	$54.80
TR40-12	40 Amp hours	12 volts	$69.50

For those of you who need a smaller battery that will fit in a back pack, the compact
batteries listed below will provide good light for a limited amount of time. The
batteries listed below are sold by Batteryspec.com and are listed as a customer
service only. To find out how long a light will run on these batteries, take the Amp
Hours and divide it by the amp draw of the light. For example, a 50-watt AquaStar
draws about 4 amps. So, a 18 amp hr. battery would run the light for 4.5 hrs.
(18/4= 4.5) and a 40 amp hr. battery would run it for 10 hrs. (40/4=10)

Compact Deep Cycle Batteries

BATTERY TYPE	AMP HOUR RATING	VOLTAGE
Group 27	100-115 Amp hours	12 volts
Group 29	110-125 Amp hours	12 volts

Wal-Mart and Sam's Club carry a good selection of Deep Cycle batteries for around $70.
We do Not recommend buying the "Combo" Starting/Deep Cycle batteries.
Stick with a "Deep Cycle" battery!