Sealed Deep cycle battery Which one??????

Submitted: Wednesday, Mar 07, 2007 at 22:24
ThreadID: 43011 Views:2701 Replies:4 FollowUps:13
This Thread has been Archived
As it seems I will now need to buy a sealed deep cycle battery any one know what type is best. I will be looking at about 50amp hours. Are they better or worse than wet cell.
Back Expand Un-Read 0 Moderator

Reply By: pixiemops - Wednesday, Mar 07, 2007 at 22:35

Wednesday, Mar 07, 2007 at 22:35
After some further research I have read that very little hydrogen is released from a wet cell providing the voltage regulator on the alternator is set to factory setting.A problem only occurs if the battery is overcharged. Even the sealed batteries can emit hydrogen if overcharged.

The reason I am going for a new battery is posters on this site have told me I will blow myself up by having a wet cell in the boot . Put simply I don't want to do that just yet!!!!!!!!!!!!!!!!!!!!!!!
AnswerID: 225958

Follow Up By: disco1942 - Thursday, Mar 08, 2007 at 01:19

Thursday, Mar 08, 2007 at 01:19
There is nothing wrong with a wet cell battery in the boot. The Austin & Morris minis had them there and they produced millions of them. How much trouble did those batteries cause.

PeterD
PeterD
Retired radio and electronics technician

Lifetime Member
My Profile  Send Message

0
FollowupID: 486890

Follow Up By: Member Dublediff(VIC) - Thursday, Mar 08, 2007 at 09:42

Thursday, Mar 08, 2007 at 09:42
My beemer has the battery in the boot............and the x5/x3 have them in the rear compartment under the tray.....
0
FollowupID: 486914

Follow Up By: pixiemops - Thursday, Mar 08, 2007 at 10:21

Thursday, Mar 08, 2007 at 10:21
It does then appear that what I have been told on this forum on another post by some people is then incorrect. The danger of blowing yourself up by having a wet cell in the boot is a non issue. As I thought. Have to be very cautious of the rubbish people are prepared to tell you. As an added precaution I will still vent it as mentioned above. Thanks to those who have provided a nicely balanced perspective on this subject.
0
FollowupID: 486924

Follow Up By: pixiemops - Thursday, Mar 08, 2007 at 10:22

Thursday, Mar 08, 2007 at 10:22
Sorry about the venting is below..

0
FollowupID: 486925

Follow Up By: greydemon - Thursday, Mar 08, 2007 at 15:47

Thursday, Mar 08, 2007 at 15:47
Disco1942 ....

Yes you are quite right. I had a mini with a battery in the boot.

Yes, it did blow up.

Only minor damage but messy to clear up.

Getting the brown stains out of the strides was a problem 8-)
0
FollowupID: 486969

Follow Up By: Pajman Pete (SA) - Thursday, Mar 08, 2007 at 17:29

Thursday, Mar 08, 2007 at 17:29
I had a mini panel van with the battery behind and under the drivers seat. The jack handle was floating loose in the back and landed across the terminals on day - that was exciting!
Any mug can be uncomfortable out bush

Member
My Profile  My Blog  My Position  Send Message

0
FollowupID: 486986

Reply By: mrbasilbrush - Wednesday, Mar 07, 2007 at 22:39

Wednesday, Mar 07, 2007 at 22:39
Sealed AGM type. There`s a couple of 75amp/hr deep cycles on ebay cheap. They are actually 2nd hand and were used for a backup system supply for something. As long as they are kept charged when not in use, or on float charge.
I got one of their 100amp/hr for $90 , it is like new.
AnswerID: 225960

Follow Up By: Mainey (WA) - Thursday, Mar 08, 2007 at 16:45

Thursday, Mar 08, 2007 at 16:45
without commenting directly about the Ebay site batteries, not all AGM style batteries are suitable as Deep Cycle batteries - for running a fridge full time.
0
FollowupID: 486979

Follow Up By: mrbasilbrush - Thursday, Mar 08, 2007 at 18:03

Thursday, Mar 08, 2007 at 18:03
I`m confused now mainey.
I know there are other styles of AGM batteries.
But why would a deep cycle AGM battery be no good for running a fridge ?
Of course like any battery it will need charging when run low.
But AGM`s have more cycle ups than a wet cell, and are designed to handle more discharge and recharge and therefore last longer .
Would`nt an Agm be safer in the boot than wet cell.
0
FollowupID: 486999

Follow Up By: Mainey (WA) - Thursday, Mar 08, 2007 at 18:45

Thursday, Mar 08, 2007 at 18:45
AGM batteries are not the saviour of the (camping) world, Absorbed Glass Mat batteries are only a type (or style of manufacturing technique) of battery, some are specially made for only shallow discharge situations (phone standby battery) and some for DEEP discharge, which you would use to run a fridge or other high power consumption product.

The Fullriver website sets out some of those limitations and also some benefits :-)

product .http://www..com/products/hgllist.asp

0
FollowupID: 487009

Reply By: Mainey (WA) - Thursday, Mar 08, 2007 at 01:03

Thursday, Mar 08, 2007 at 01:03
Pixie where do you live??
In what state, city or town?
AnswerID: 225986

Follow Up By: pixiemops - Thursday, Mar 08, 2007 at 01:40

Thursday, Mar 08, 2007 at 01:40
WA Perth

I am going to set up a venting system for my battery. After some thinking and wandering around the garage I came across some 4mm irrigation tubing. I can puncture a hole in the top of the battery box insert one of the connectors for the tubing into the top of the box for the 4mm to connect to. Then pass the tubing out the bottom of the car where the wires go out to the anderson plug near the tow ball.

That should provide a means of escape for any problem hydrogen build up.

0
FollowupID: 486893

Follow Up By: biz - Thursday, Mar 08, 2007 at 14:08

Thursday, Mar 08, 2007 at 14:08
Pixie,
If you are going to vent your battery with the tubing it will have to flow upwards as hydrogen is lighter than air.
0
FollowupID: 486956

Follow Up By: pixiemops - Thursday, Mar 08, 2007 at 15:05

Thursday, Mar 08, 2007 at 15:05
Was thinking about that so now where do I vent it too . Needs to be higher than battery another problem . Im certainly not going top drill a hole through the boot just for that.mmmmmmmmmmmmmmmmmmmm
0
FollowupID: 486963

Reply By: Mike Harding - Thursday, Mar 08, 2007 at 19:24

Thursday, Mar 08, 2007 at 19:24
I seriously doubt you need to worry about gassing issues for a 50Ah battery in a vehicle boot.

AGM are very good but expensive. What will you use it for? As you have a 3 way fridge I assume lighting etc? If that's all just go for the cheapest deep discharge wet battery you can find. I used a BigW starting battery ($30) for this purpose quite successfully for about 3 years.

Mike Harding
AnswerID: 226137

Follow Up By: pixiemops - Thursday, Mar 08, 2007 at 20:42

Thursday, Mar 08, 2007 at 20:42
Thanks alot Mike

I will just be using it for a bit of tv phone and small battery charging when I need some of the small sealed ones I have. Thats why I got the inverter to run the small tv i have. I will connect a small tube from battery to floor of boot to vent out. Not sure how good that will be but figure if there was a great build up of hydrogen then it will push it out there.

As you say I too figure it wont be a problem . The boot is not completely air tight and as for the amount of gases emitted it would be miniscule. Think simply hopping behind the wheel of the car is alot more risky than worrying about an explosion from a battery in the boot.

Ps On a recent 2 day trip just south of Mandurah took some ice-cream and the 1180 kept it perfectly in the car and then at camp on gas . Icy cold beers infact nearly too cold as some of the water bottles in the fridge iced up a bit . Day temps about 35

cheers
0
FollowupID: 487030

Sponsored Links