BT-50 Battery Upgrade?

Submitted: Monday, Jul 04, 2016 at 15:30
ThreadID: 132914 Views:9373 Replies:6 FollowUps:4
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Anyone fitted a larger battery to their BT-50?

I have a 2014 model with original Fomoco Din Battery 740 cca and would like to upgrade to larger battery, 790/810 century or 900 Alco, or any other options I can find.

I've had the battery out and it sits in a plastic tray which is loose, the plastic tray is held in place by clips to battery wiring, the weight of battery and finally a bolted bracket across top of battery holds it in place.

It is a snug fit in plastic tray and not much room to go bigger, if tray is modified, by cutting our sides, you could go, possibly 10 to 15 mm wider, hopefully 50mm longer but not sure and possibly 20 mm higher.

The larger options I’ve found above (century and alco) have a longer battery, so I figure I could simply cut the end out of plastic tray so longer battery will fit, the 900 cca alco is the biggest so sounds like the best option so far.

Has anyone else done this, or has a better idea?
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Reply By: Hoyks - Monday, Jul 04, 2016 at 16:00

Monday, Jul 04, 2016 at 16:00
Yes, cut the end out and fit bigger battery.
AnswerID: 602078

Reply By: 9900Eagle - Monday, Jul 04, 2016 at 16:03

Monday, Jul 04, 2016 at 16:03
croaky, this battery will slip straight in. Don't worry about the max 17.5 amp charge as that is only for when you are using a battery charger. Some are fitting the larger 75ti battery with a few modifications.
There is a bit a fair bit of info about batteries on the the NewRanger.net forum

Battery link.
AnswerID: 602079

Reply By: Member - croaky - Monday, Jul 04, 2016 at 16:58

Monday, Jul 04, 2016 at 16:58
Thanks for the tips and link, I've just ordered a superstart 75ti, from the measurements L-315 W-175 and H-190, the only modification may be the braket as this battery is same length and width as the Fomoco 730caa standard battery fitted, and about 10 mm higher, cheers
AnswerID: 602084

Follow Up By: Member - croaky - Saturday, Jul 09, 2016 at 09:38

Saturday, Jul 09, 2016 at 09:38
I went for the even larger SS88Ti (1,189cca 92AH, a beast of a starting battery;-) as I like to go for the max, and it just fits in, very snug fit requiring careful maneuvering of wiring and terminals to get it in, it would be helpful to have another set of hands, but I did manage by myself.
Modifications; to plastic battery holder base (under battery), I cut both ends out to facilitate longer battery.
Also put a nut and longer screw in the top braket as this battery is 10mm higher. And red plastic +positive terminal cover clip under earth lead need trimming.
Pic attached of fitted battery.

I'd suggest for most people to go for the SS72 or the 75Ti so it is easier to slide in.

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FollowupID: 871841

Reply By: 9900Eagle - Monday, Jul 04, 2016 at 17:58

Monday, Jul 04, 2016 at 17:58
For yourself and other BT 50 and PX Ranger owners, you would be advised to have a look at this thread regarding cable insulation on the loom that runs across the front of the engine.
Cable chaffing link
AnswerID: 602086

Follow Up By: Member - croaky - Monday, Jul 04, 2016 at 18:30

Monday, Jul 04, 2016 at 18:30
Hi 9900Eagle, I first thought what's this got to do with tread, but in any case I checked your link, and then checked my car and the wiring lume was chaffed just like the thread (30,000km on my odometer), so I've patched it with split cable cover and some ties, and will put a stainless clamp on when I get one, thanks for the thumbs up.
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FollowupID: 871696

Follow Up By: Bonz (Vic) - Tuesday, Jul 05, 2016 at 07:04

Tuesday, Jul 05, 2016 at 07:04
Great info, I have been looking at these and this will be on my check list for anything I look at!
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FollowupID: 871703

Reply By: Member - Outnabout.. - Friday, Jul 08, 2016 at 16:42

Friday, Jul 08, 2016 at 16:42
With the bigger battery are the terminals still recessed so they don't short on the bonnet?
AnswerID: 602220

Follow Up By: Member - croaky - Saturday, Jul 09, 2016 at 09:40

Saturday, Jul 09, 2016 at 09:40
they are recessed (DIN battery style), I just added a couple of pic to thread.
There is plenty of clearance, I put putty on battery and bracket and closed the bonnet, then reopened and checked putty, there is a good 40 mm clearance on battery and 20mm on front bracket where I've lifted it about 9mm using a nut as washer and longer screw.
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FollowupID: 871842

Reply By: Member - croaky - Saturday, Jul 09, 2016 at 10:00

Saturday, Jul 09, 2016 at 10:00
BTW - I purchased the SSB SS88Ti battery from 4wd Extreme on ebay, this is the second battery I've purchased, the previous for my ARC Pak, and I highly recommend this seller. It was delivered to my door overnight for $340 all up ;-)

Link to battery SS88Ti
AnswerID: 602241

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