Prado help- Battery and Bull Bar

Submitted: Saturday, Nov 28, 2020 at 15:09
ThreadID: 140810 Views:1435 Replies:8 FollowUps:12
Hi All

My nephew has just bought a Prado 2014 3L turbo GX. He is looking at fitting a steel bull bar and extra battery. He is keen for the battery to go under the bonnet, I have explained this will kill an AGM (had my own personal experience with that),but is there another type of battery technology that may fair better under the bonnet? Note, he doesn't want to spend a grand or more on a Lithium battery. Battery will be used to run accessories and double as a backup start battery. It will be charged via a Dc to DC charger.

On another note, does anyone know the output voltage from the alternator on this model?

On the Bull Bar. Car has standard suspension, bar would be around 70kg give or take 10kg. Has anyone had experience with putting that weight up front on a Prado with factory suspension?

Thanks for your help.

Cheers

Lyndon
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Reply By: HKB Electronics - Saturday, Nov 28, 2020 at 15:40

Saturday, Nov 28, 2020 at 15:40
Alternator output of that model is around 13.6-14V@24C ambient and hot engine bay. Fitting a booster diode will bring the voltage upto normal charge voltages and a DCDC would then not be required.

You could put an Century Marine Pro, Dual force or an Optima. Optima have a Euro type battery that is similar size to the N70Z.

Toyota probably fitted alloy bars as standard, with the steel you would get more droop, alloy bars move around a lot, I would image steel would put more load on the chassis.
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Reply By: Member - bbuzz (NSW) - Saturday, Nov 28, 2020 at 17:33

Saturday, Nov 28, 2020 at 17:33
I have a 2008 KDJ with battery on the rhs under the bonnet. Century.

Used an old Landcruiser battery box for the second battery, which fits in snugly. Had it for 10 years. Used the diode suggested in the other reply. Get 14.2 v across both batteries from the alternator.

I also have a steel bullbar. Same period of time.

I put standard height Lovell springs under the old girl; same time period. And Levell gas shocks.

Touch wood, everything going well.

bill
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Reply By: wooly0005 - Saturday, Nov 28, 2020 at 17:43

Saturday, Nov 28, 2020 at 17:43
Hi Lyndon,

I don't see the need to over complicate things myself.

Whats wrong with the old lead/acid Century or similar for a second battery with an isolator that has the momentary switch so the batteries can be joined together to start the engine if need be?

Cheap to set up and unless you are driving a space shuttle, more than enough power for a fridge and some lights.

No doubt a steel bar will be a bit weighty but not much you can do about that.

A couple of 10mm spacers will give you some height back for not much outlay. Superior Engineering do them for about 80-100 bucks I think?
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Reply By: Dennis Ellery - Saturday, Nov 28, 2020 at 20:19

Saturday, Nov 28, 2020 at 20:19
I have always avoided AGMs under the bonnet of my V8 Troopy.
Century have now produced an AGM for 4WD under bonnet use (2 year Warranty).
I have just fitted two Century Dual Force Dual Purpose Batteries.
I also fitted a HKB Adjustable Alternator Voltage Booster to bump my 13.9 volts to 14.6 volt.
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Reply By: Hoyks - Sunday, Nov 29, 2020 at 09:51

Sunday, Nov 29, 2020 at 09:51
Whatever the starter battery is, just get another one of those? I got away with doing that for years. New battery into the starter slot, old battery into the AUX slot and dead AUX into the recyclers. I'd get around 4-5 years out of each battery.

He could also bend up a heat shield to go around the back side of the battery to keep the temps down a bit. Only needs to be an L shape and it gets some ventilation from the front, but protects from radiant heat from the motor.

I put a steel bar on my ute and it was pretty ordinary to drive, diving under braking and hitting the stops on dips in the road.

A battery and a bar and you're looking at close to 100+kg extra up there. Springs are cheap ($200/pr) and will carry the load better and safer. If on a budget, then he can probably get away with the current shocks, provided they haven't been flogged to death.

It might be worth also looking at the max axle loading for the vehicle before adding all the gear. In my ute with a steel bar, winch and my 100kg in the front seat I have 10kg to spare. The 2nd battery goes in the tray.
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Follow Up By: HKB Electronics - Tuesday, Dec 01, 2020 at 08:54

Tuesday, Dec 01, 2020 at 08:54
Yep, if you want it to be legal check the weights, I have a genuine Toyota alloy bar and winch on my 120 and the front axle weight is over the max specified by Toyota!
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Reply By: Member - lyndon NT - Sunday, Nov 29, 2020 at 14:27

Sunday, Nov 29, 2020 at 14:27
Hi Guys

Thanks for all the reply's, Still love to here from someone with bar and stock standard suspension.
As mentioned above though, I'm in agreeance, think the car front end will dip considerably under brakes.
His Dc to DC charger set up will allow for regulation of solar input. Not sure what set up he is planning on that front though.

Cheers

Lyndon
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Follow Up By: Member - cruza25 - Sunday, Nov 29, 2020 at 15:57

Sunday, Nov 29, 2020 at 15:57
The booster diode works well in the prado - just gives it a slight higher voltage to the 2nd battery

If you do fit a 2 nd battery be very careful of the air conditioning pipe Depending which tray and size of battery you fit puts it very close. If it rubs and makes a hole the ac will leak. A new pipe is about $1200 fitted Be very careful
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Follow Up By: Member - rocco2010 - Sunday, Nov 29, 2020 at 16:02

Sunday, Nov 29, 2020 at 16:02
I’ve got an 2013 prado with ARB steel bar and second 100 ah battery under bonnet. Standard suspension.

That’s a fairly common arrangement I would have thought.

No sign of droopy nose or dive under brakes.

In an ideal world a lighter bar and lighter battery (lithium) would no doubt be better.

But I’ve never had an issue in my travels.

Good luck to him whatever he does.

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Follow Up By: Member - lyndon NT - Saturday, Dec 05, 2020 at 14:34

Saturday, Dec 05, 2020 at 14:34
Thanks Rocco

I guess he can fit the bar and battery and if not happy just change out springs. Surprised you don't have issues but that is GREAT to hear, might save him a few $.
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Reply By: Ozi M - Sunday, Nov 29, 2020 at 18:43

Sunday, Nov 29, 2020 at 18:43
I have an alloy bar on a 2015 so my experience won't help but I recall back in 2015 when I was looking around that some of the earlier models had a problem with the weight of the steel bars.

So much so that there were reinforcing plates available that could be welded on to prevent cracking of the body.

Found it

https://www.exploroz.com/forum/130565/cracked-chassis
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Reply By: Nomadic Navara - Sunday, Nov 29, 2020 at 22:50

Sunday, Nov 29, 2020 at 22:50
With a battery under the bonnet and a steel bar you will have over 100 kg of extra weight on the front wheels.

I would suggest putting the battery in the tray. As far as Bull Bars go, I would fit a SmartBar.

See also these links, there is also a couple of videos on them.Smartbar Bullbar - Ultimate 4WD Equipment - SmartBar | ARB 4x4 Accessories - SmartBar | Total 4x4 - note in the last one, the NSW ambulance service uses them.



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Follow Up By: Hoyks - Monday, Nov 30, 2020 at 16:00

Monday, Nov 30, 2020 at 16:00
Its a Prado...
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Follow Up By: HKB Electronics - Monday, Nov 30, 2020 at 17:13

Monday, Nov 30, 2020 at 17:13
Why let fact get in the way of a solution:)
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Follow Up By: Nomadic Navara - Monday, Nov 30, 2020 at 23:15

Monday, Nov 30, 2020 at 23:15
"Its a Prado..."

Yes, that is listed amongst the Toyota vehicles. If you can't find it then go to This Link.



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Follow Up By: HKB Electronics - Tuesday, Dec 01, 2020 at 08:43

Tuesday, Dec 01, 2020 at 08:43
"I would suggest putting the battery in the tray"

What tray?
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Follow Up By: Allan B (Sunshine Coast) - Tuesday, Dec 01, 2020 at 09:19

Tuesday, Dec 01, 2020 at 09:19
.

Oh, .......... I thought he said "dray".

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Follow Up By: Gramps - Tuesday, Dec 01, 2020 at 10:45

Tuesday, Dec 01, 2020 at 10:45
Must have meant the ash tray.

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Follow Up By: Member - lyndon NT - Saturday, Dec 05, 2020 at 14:36

Saturday, Dec 05, 2020 at 14:36
Now Now folks, maybe Peter was just enjoying a Bevy or Twoooo
Now is the only time you own
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Follow Up By: Member - lyndon NT - Saturday, Dec 05, 2020 at 14:41

Saturday, Dec 05, 2020 at 14:41
Hi Peter

Thanks for your reply. I have also suggested he put the battery in the back of the vehicle, he's not so keen as it will effect space. Up to him in the end.
Don't think a smart bar would cut it, seems a little low on the protection side. May be ok for a small animal but a jumping Roo, or the Emu we took out centre on at 100k/hr, maybe not....

Cheers
Lyndon
Now is the only time you own
Decide now what you will,
Place faith not in tomorrow
For the clock may then be still

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