Topic: HB 597ci hd di wattage?

[roadx]

on the HB site HB claims 500w RMS for the 597ci hd di but on the packaging(back of box) it claims 300w RMS. what the deal? and which spec is right? or is traditional sonar 500w and DI 300w it's really not explained how i can understand.
http://store.humminbird.com/products/410761/597ci_HD_DI_Combo

http://www.crappie.com/crappie/attachments/fishing-electronics-trolling-motors/62436d1306015351-talked-my-wife-into-getting-me-597ci-hd-di-photo068.jpg


thanks for your time

[Humminbird_Greg]

500w RMS.  The boxes were printed with the wrong information.

[roadx]

thank you for the explanation.
seals the deal, going to pick one up 

[gooral]

Hi.


I'm having troubles with my 597ci hd di combo unit. Manual says it has around 0,6A power consumption (from top of my head).
First I bought a 7Ah battery (hoping to get one 10-12h day of it or 2 days with switching unit off every time anchored or at shallow).
Set alarm to 10V. Most of occasions after around 7h i would get alarm of low V. In worst case it happened after about 5h - I Pushed it as far as i could using it and switching back on till i drained battery totaly but didn't get more than extra hour this way.

So i got myself a 12Ah battery - used it on the water for 5-7hours+ at home (transducer in the air) for another 5 and it dropped to 11.7V (according to my data it is about 80% discharge and it was just about time to disconnect battery and charge it )- so again max 10h.
I think I shouldn't discharge standard battery to more than 20% of charge if i want to use it for more than 3 times

Batteries are brand new so is the unit and the charger. is it possible that batteries would "stretch" a little bit after few charging cycles?
Or maybe the power consumption of the unit (with recording data and split screen running etc) is bigger than it says on the box/in the manual? (i actually got an idea to put an amp meter in between battery and unit tomorrow...).
Previously i had battery connectors crimped on the oryginal cables. Now i have it soldered to gold plated socket (fitted under the bench to minimise contact with water) and gold plated plug fitted onto the battery (just to make sure of good contact as boat is in the garden and in Irish weather contact were rusting in matters of days...). I really wanted to get at least of 15-18h out of single charge...
is this normal or I do something wrong?

[sonar2000]

Hmmmm...dont really know.  We use two 6amphr batteries on our 1197 and get over 12 hours..
And still have 11 volts....

Thats backlite and recording in use also.......
chuck

[gooral]

Hmmmm...dont really know.  We use two 6amphr batteries on our 1197 and get over 12 hours..
And still have 11 volts....
Thats backlite and recording in use also.......
chuck

hmm one of my friends has some SI unit (1197 possibly) and he seems to be getting more out of his battery (taking unit consumption/capacity of battery as a criteria). I will test another battery tomorrow and i'll put an amp meter in the circuit as IMHO either i have bad luck with batteries or unit drains at least 1/3 more than it says on the box. I'll report during week.

[sonar2000]

OK, let us know what you find.  This is always interesting.
We use the smaller batteries as our units are portable.
I would suppose that for boat mount a higher marine battery might be the norm.

The batteries we use are motor cycle batteries.  sealed type....

Chuck

[gooral]

OK, let us know what you find.  This is always interesting.

this is getting interesting..... As I measured ACTUAL consumption and it is less than 0,5A (around 0,41-0,43)  - so on 12Ah I should get 20h with no problem. Would this unit use more power on the water? (as I mentioned it is in the garden with transducer in the air (in standard mode no demo or anything).

[sonar2000]

I would not think that  would make any difference.  Some thing is pulling source amps..
Do you share this battery with any thing else..
Could the battery be having a bad cell?

chuck

[gooral]

I would not think that  would make any difference.  Some thing is pulling source amps..
Do you share this battery with any thing else..
Could the battery be having a bad cell?

chuck

source amps are measured with ampmeter connected directly in between battery and socket.
Nothing else in the system: battery>crimped connectors>1foot of electrical wire>golden plated plug>golden plated socked>oryginal wire which come with the unit>oryginal socket>unit. Original bracket is covered while not in use (and unit itself is stored in the pouch to make sure no contacts will get dirty or anything).
If this battery has a bad cell it would be second brand new battery with bad cell i bought...

What crossed my mind is that maybe i bought battery which was not fully charged - will try it second time and see what will happen.
Thanks.

[sonar2000]

Charge is every thing. If this is off the shelf then I would have charged it before first use..
Battery cells, while they do go bad it is not unlikely that a cell could have been bad or a certain lot number was not properly constructed.
This the the new millennium......We dont seem to have the quality standards  of past years..
In a lot of things..

Chuck

[Humminbird_Greg]

Just some things to think about:
Although that battery is new to you it could be years since it was manufactured and you don’t know how well it was treated of mistreated.  I have checked he capacity of batteries that were “new” that did not meet specification.  Also do not assume that if a unit pulls 0.5A of current at 12VDC that it does so as the battery discharges and that a 12AHr battery can supply 24 hours of run time as it cannot.  As the battery capacity gets used up the voltage will drop.  As the voltage drops the unit will pull more current to equate to the same amount of power that it needs.  So at some point in the discharge of that 12AHr battery it can no longer maintain a constant 10.0VDC supply of current and the unit will shut off.

[gooral]

As the voltage drops the unit will pull more current to equate to the same amount of power that it needs.  So at some point in the discharge of that 12AHr battery it can no longer maintain a constant 10.0VDC supply of current and the unit will shut off.

Well lets say 0,45A @ 12.7v = 5,7W is this correct? If so then 5,7W @ 11,7V (voltage @ which i switched unit off) I=0,49
My guess it is pretty same considering its impact on battery life unless you would allow it to drop to 10V then I=0,57A (is this that 0,6A mentioned in manual?). To get close to 11h of service I must be finally equal close to 1A@5.7V (without taking to account that I will lower with rising voltage and it would destroy the battery). Maybe I'm just taking this without enough rocket science... (maybe Ah isn't what i take it for I already saw fishing lines marked not by knot strength but hypothetical mass of biggest fish you can land using it....)

Ps. I charged battery full and will test it once again some time soon.

[gooral]

Ps. I charged battery full and will test it once again some time soon.

Turns out that battery I bought wasn't fully charged (I've been told that it is + it had like close to 13V voltage). Fully charged battery have voltage in 14V range. At the moment it worked for around 15h and it is still 12v+ so I could expect it to last 17-18h easily i guess.
So all in order. Thanks for all replies.

[sonar2000]

Thanks for the feedback. I am sure this will be of help to others in the future.
Batteries can be such a frustrating piece of equipment.
We measure the volts but operate in amps which we dont usually measure.
Batteries will show volts but dont allow the passing of amps for various reasons. Usually undercharged or bad cells..

Glad you are on the road to a long fishing day.

Any good catch deserves a picture for us to see..

Chuck