Waeco battery troubles???

Submitted: Sunday, Feb 21, 2010 at 15:38
ThreadID: 76208 Views:6316 Replies:2 FollowUps:10
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We've purchased a Waeco CF32UP, the model with the inbuilt battery and a RAPS36 battery pack.

The fridge only discharges the battery pack to 12.2 volts and then cuts out, how do we change this? It also discharges it from 12.7v to 12.2v in around an hour, is that normal? We cant get it to charge over 12.7v even though the book says that is only 80% full.

We've set it up that the RAPS36 is plugged into the cars cigarette slot and the fridge is plugged into the RAPS36 cigarette slot. We have a 240v to 12v adapter that allows us to plug the cigarette plug into and after charging the RAPS36 and CF32UP from this over night this is all we could get.

The fridge lasts fine on its own battery but we're getting hardly anything from the RAPS36, are we doing something really wrong?
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Reply By: Notso - Sunday, Feb 21, 2010 at 15:46

Sunday, Feb 21, 2010 at 15:46
Well, I reckon that there is an issue with power supply from the RAPS to the fridge.

can you check the actual voltage at the fridge, not at the battery?

I think uou should get rid of the Ciggy lighter plugs and use a decent plug, like an anderson or one of the other more positive type connectors.

The other thing is trying to charge your RAPS from a Ciggy plug, I reckon there would be too much voltage drop to put in a full charge so an anderson plug for it would also be in order with decent sized wires from the vehicle battery to the power pack.

AnswerID: 405206

Follow Up By: Pengoc - Sunday, Feb 21, 2010 at 16:00

Sunday, Feb 21, 2010 at 16:00
Hmm, that's a good idea to check the voltage at the fridge, we don't have anything to do it with though. I guess we could purchase a cheap voltage tester and jam the prongs into the fridge plug.

I've never seen an anderson plug, but I think the RAPS36 only has a cigarette and hella style plug. We may need to go to a auto electrician and get them to change some of this around perhaps. Still, does it seem normal for a voltage drop of 12.7 to 12.1 in an hour under normal use?

What other options do we have to run a fridge? we've only got a Magna sedan and that's why we've gone this route. So far it's proving to be very disappointing. We'd like to get a few days run time at least.

It kind of annoys me that Waeco would even put such thin cables with their fridge in the first place, surely if this would be a problem they would put something more decent in???
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FollowupID: 674919

Follow Up By: Pengoc - Sunday, Feb 21, 2010 at 16:04

Sunday, Feb 21, 2010 at 16:04
Also forgot to mention, if you check the RAPS36 while the fridge is plugged in, and then check it again after unplugging it the voltage increases about .2v. If you plug the fridge back in it remains at this voltage when checked again. I'm not sure if that means anything.

It also says on the warranty form that you should select the low cut off time so the fridge will discharge an external battery to 10.4v, I can't find this switch anywhere? In the instruction booklet it says that the fridge will cut off at 12.2v but nothing about changing it.
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FollowupID: 674920

Follow Up By: dbish - Sunday, Feb 21, 2010 at 16:38

Sunday, Feb 21, 2010 at 16:38
Hi Pengoc, I have looked at the Waeco CF32 UP & decided that the in built 18AH battery is far to small & if used for there quoted upto 17Hrs it wouldent last very long as it would be cyclrd to deeply. I finised up buying a CF40 & replacing my vehicle battery with a N70ZZ battery (vehicle is XF panel van) this gives 24Hrs or more using the CF40 asa frige, never had any problems starting my vehicle with this setup. Daryl
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FollowupID: 674928

Follow Up By: rosso1234 - Sunday, Feb 21, 2010 at 17:35

Sunday, Feb 21, 2010 at 17:35
somewhere on the fridge will be the option to select High, medium and low voltage protection. Yours is on High try and find it an turn it to low. Its usually a red one that is recessed into the panel around where the plugs go in
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FollowupID: 674936

Follow Up By: rosso1234 - Sunday, Feb 21, 2010 at 17:37

Sunday, Feb 21, 2010 at 17:37
as with dbish,

I have a 1050 CCA battery in my car, will run the fridge CF-40 for 36-48 hours with out starting the car, so a short drive or quick idle for a while will top up the battery
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FollowupID: 674938

Follow Up By: rosso1234 - Sunday, Feb 21, 2010 at 17:55

Sunday, Feb 21, 2010 at 17:55
was gunna post a picture, but be blowed if I'm gunna pay $60 membership for the privilage, seems help has a $$$$ amount next to it

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FollowupID: 674940

Follow Up By: Gramps - Sunday, Feb 21, 2010 at 18:08

Sunday, Feb 21, 2010 at 18:08
Rosso1234,

You don't have to be a Member to post a pic. As long as the picture is hosted somewhere like Photobucket, just use the IMG tags and "Insert Image" in the Post or reply (buttons beneath text box).

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FollowupID: 674941

Follow Up By: Gramps - Sunday, Feb 21, 2010 at 21:21

Sunday, Feb 21, 2010 at 21:21
Pengoc,

Your fridge has probably got a panel similar to this




The slide control ( Low - Med - High ) at top centre of the panel is the one that controls the battery protection cutout feature.

Make sure the Emergency slide ( RED ) is in the Off position. If this is On, then the fridge will run continually. That will definitely not do the inbuilt battery any good.

Regards
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FollowupID: 674970

Follow Up By: Pengoc - Sunday, Feb 21, 2010 at 22:10

Sunday, Feb 21, 2010 at 22:10
Our fridge doesn't have a switch like this, it does however have a low, medium and high in the on screen menu, but I've already set that one to low. I'm trying it now without the internal fridge battery turned on to see if it makes a difference.

I'm starting to think of selling this darned thing. I found this http://www.fridge-and-solar.net/dual_bat.htm and it seems to describe a way to add an extra battery in the back of the car.

I'm looking at this battery http://www.supercharge.com.au/product_detail.php?seq=85, I think it's 120 amp/hours? Does anyone have any idea how long the car would take to charge this from a Magna with 3.5l V6?

My only problem then is they say not to discharge bellow 11.5v. I guess we would just need to put a voltage meter on it every now and then.
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FollowupID: 674984

Reply By: SKELLY_POD - Sunday, Feb 21, 2010 at 22:10

Sunday, Feb 21, 2010 at 22:10
Hi Pengoc

Using the cars cigarette lighter is most likely the problem. Your RAPS36 should have an input for your positive (power) and negative (earth) wires, you should use this input directly from your cars battery for minimal voltage drop. Then your anderson plugs into RAPS to your fridge. Cigarette wiring cannot handle the high current draw of the fridge and will just shut down, good luck

Cheers Rob
AnswerID: 405282

Follow Up By: Pengoc - Monday, Feb 22, 2010 at 00:19

Monday, Feb 22, 2010 at 00:19
Thanks Rob. I think you're quite right, I'm also thinking we'll get a bigger battery than this little RAPS36 thing too. Does anyone know how long a 120 Amp/Hour battery would take to charge from a cars alternator?
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FollowupID: 674998

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