Any math guys out there?
#1
Any math guys out there?
I don't know but is there a way to figure out approximately how long a battery will last at a given usage?I have built a system for a friend's party boat(tug) and now I need to power it.I have a class d amp running about 400 watts@ 6ohms and a 100x2@8ohms.How can I get it to last as long as possible for as cheap as possible before starting and recharging?I'm a newbie.
#4
Originally Posted by pooner
I don't know but is there a way to figure out approximately how long a battery will last at a given usage?I have built a system for a friend's party boat(tug) and now I need to power it.I have a class d amp running about 400 watts@ 6ohms and a 100x2@8ohms.How can I get it to last as long as possible for as cheap as possible before starting and recharging?I'm a newbie.
You'd have to find the total current draw on your battery.
Once you have that you need to check the ratings of your battery, the AH is what you are looking for.
So let's say you are drawing 40 amps from your battery.
Your battery is rated at 80AH.
That means it can supply 1 amp for 80 hours, or 80 amps for 1 hour.
In this case the battery would last 2 hours.
#7
Keep in mind, the voltage will also be dropping during that time frame. A voltmeter would be a good idea, as well you may want to think about keeping a spare battery tucked away....
That way you have 2 to run the system during the main part of the evening, and the spare in case you decide to stay out a little longer.....
That way you have 2 to run the system during the main part of the evening, and the spare in case you decide to stay out a little longer.....