deep cell

[steveg05]

Found a deep cell rated @ 140 amp hrs with 240 reserve.
What does this mean has a 36 month prorated warr.
Cost is 89.00 at a local auto parts store
will use to run a pd40 minkota motor

 

[Silvertip]

Re: deep cell

140 amp hours can be looked at as delivering 1 amp of current for 140 hours or 10 amps for 14 hours. The number 240 is "minutes". In this case the battery will deliver 23 amps (typically) for 240 minutes. The number by itself is meaningless unless you know what amperage it is delivering to arrive at that time. In an application, say a small trolling motor that drew 23 amps of current, that battery would operate the motor for about 4 hours.

 

[steveg05]

Re: deep cell

Anyone know the amp draw on this PD40v2 @ speed # 2
That is the speed I normaly troll at.
pretty sure this motor is a maximer.

 

[Silvertip]

Re: deep cell

Current draw at speeds less than fastest are not published nor do they need to be. If you know the maximum current draw (fastest speed) you have an idea how long you can be on the water. A 40 PD draws a maximum of 42 amps. There is also a difference between standard motors and the digital motors which pulse the motor at anything less than wide open. The slower they run the more battery savings are realized by the technology. At wide open speed setting both technologies draw the same current.

 

[Mark_VTfisherman]

Re: deep cell

I almost always learn stuff when silvertip answers a question. Thanks!

I thought I would mention my experience with a MinnKota 44 and a group 27 Everstart (110Ah) as well. At walleye trolling speeds, I can run from 4 to 7 hours depending on wind and how fast I am going. Then I switch to the boat motor- 40hp- though I need a trolling plate to run very slow speeds.

I run the electric for two reasons: 1] it costs very little to recharge the battery when I get home, but 5 hours of trolling can burn $10 to sometimes $15 of gas. 2] I love the silent running and fume-free experience while running the electric.

Occasionally we have "used up" the deep cycle and I switch on to the starting battery for a few more hours. The 40hp pull-starts easily but I have only needed to do that a few times.

You will probably have similar performance from the combo you asked about.

 

[trendsetter240]

Re: deep cell

Hi Guys just thought I'd add my 2c here as well.

Ah (amp hour) ratings on deep cycle batteries are most commonly based upon a 20hr rate. So in your case, the 140Ah battery can sustain 7amps for 20hrs before it is completely discharged.

Maximum continuous output = Ah rating divided by hours of discharge (140 / 20) = 7amps.

This doesn't translate evenly to other disharge rates. The lower your current draw the more amp hours you will get from the battery. On the other hand, the higher your current draw the fewer amp hours you will get from the battery.

i.e. 140ah @ 7amps for 20hrs doesn't translate into 140amps for 1 hour as you might think. You'd be lucky to get 30 minutes at that rate. And with only a 1amp draw you will get a higher rating; possibly as many as 200 hours with the 1 amp draw.

HTH, I didn't want to get TOO long winded in my response.