The batteries in my motrec are terrible, the battery box is sized for 6 golf cart batteries and I'm thinking about just buying 6x PbA Gc2 batteries ($170 each) from the local Remy battery. The only other option I see is amazon li-ions but the $/Ah is nowhere near as good as PbA and weight is not an issue. Thoughts?
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36v golf cart battery options
- Thread starter larboc
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clodhopper
Get off my lawn, punk!
I just put three crappy Walmart 12v deep cells in the old golf cart my wife bombs around in. Then put three cheap solar panels in series to help and reduce the number of times it needs charging. Works well enough and didnt cause mental anguish and buyers regret.
TRINDU
PBB Orphan
Reecently outfitted a 6 person golfcart with two 105ah 48v amazon lipo batteries. So the equivalent ah of what you want. Except its zero maintence and install was easy.
It has ******s in it for 40 hours a week driving in circles on the lot. We charge it once a week out of habit.
Im leaning that way as well for my 48v utility cart. DC-DC converter and its done.
- Thread starter
- #4
How long have you had them? I'm wondering about life span of the two options. There are 36v lions on amazon.
- Thread starter
- #7
I've already got a 50hp gas cart thats too fast to be fun. Current need is for a motrec mine cart.
- Thread starter
- #8
How many years on the Li?
Looking at this guy:
Thumping
Well-known member
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2 so far. Got it out the other day and it's doing well.
- Thread starter
- #10
So, why not buy 3 12v batteries instead of one 36? Cheaper, can replace individual batts, and can be used for other things?
TRINDU
PBB Orphan
10 months. I dont know life span or hours ran, but the current diviation of cells, according to the app, is .005v.
At the time, we paid $719ea on sale.
![[486]](https://data.irate4x4.com/avatars/m/0/94.jpg?1700178133){kind=avatar}
[486]
smell-o-vision
buddy just put a 36v lithium in his golf cart that he brings to brainerd
it was about the size of a 4d but only about 50lbs
oughta help with his trailer weight a bunch
no idea on price, brand, or longevity, sorry
I wanna say it was like $400, but I can't be certain.
I also am an enjoyer of stone-simple flooded lead acid batteries. Lithium scares me no matter what marketing department says it won't shoot out a bunch of fire.
it was about the size of a 4d but only about 50lbs
oughta help with his trailer weight a bunch
no idea on price, brand, or longevity, sorry
I wanna say it was like $400, but I can't be certain.
I also am an enjoyer of stone-simple flooded lead acid batteries. Lithium scares me no matter what marketing department says it won't shoot out a bunch of fire.
kmkommes
Red Skull
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Where exactly are you located? Can you do closer to 48 volt?
I have 2 Brammo 100AH 4440 Wh batteries available. They are fairly old but should still be good. I just measured them at 45 volts. They might be worth $10 or $1000. I just want them out of my garage. I don't know if I have any supporting electronics (charger, etc...). I should be able to dig up some documentation on them. Found a CAD file.
I'm in DePere but can get these North.
They are about 9"x10"x16"
I have 2 Brammo 100AH 4440 Wh batteries available. They are fairly old but should still be good. I just measured them at 45 volts. They might be worth $10 or $1000. I just want them out of my garage. I don't know if I have any supporting electronics (charger, etc...). I should be able to dig up some documentation on them. Found a CAD file.
I'm in DePere but can get these North.
They are about 9"x10"x16"
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kmkommes
Red Skull
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I'm using "old" lawn mower batteries in my cobbled together golf cart. This pile will do 45mph and has like 60 miles of range. I have it limited to 15-20mph for the kids. Yes, those are old vice grips holding the throttle sensor in place. The cart is neglected and not a priority. I am a big fan of lithium. Charge every few weeks. Cart and batteries are left out in the snow bank all winter. Cart is swapped with an ASI oak motor and has a BAC4000 controller.
ParadisePWoffrd
Recovering Project Junkie
I know nothing about golf carts, but have an old 36v cart that is missing some stuff. Do I need to change everything to go to 48v or 72v, including motor? Or just the battery and controller?
Thumping
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Considering it's missing some stuff, build an harley engine, cam the hell of it and slap it and the trans into it. Straight pipe it too
- Thread starter
- #17
I don't think so but I will dig into it more. The curtis controller is clearly labeled 36V, as is the motor, but maybe that's just a suggestion by the Motrec fun police. I'm 4hrs north of you, but I am in Green Bay all the time. Actually, full charging voltage on a "36V" lead acid stack is 44.4 volts, so maybe those would be no different really than stock.Where exactly are you located? Can you do closer to 48 volt?
I have 2 Brammo 100AH 4440 Wh batteries available. They are fairly old but should still be good. I just measured them at 45 volts. They might be worth $10 or $1000. I just want them out of my garage. I don't know if I have any supporting electronics (charger, etc...). I should be able to dig up some documentation on them. Found a CAD file.
I'm in DePere but can get these North.
They are about 9"x10"x16"
Are those 12s? Does the BMS allow them to do cold? I use this thing down to 20F or so.
Thanks!
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ParadisePWoffrd
Recovering Project Junkie
I already have a gas cart. The electric cart is for taking on vaca where they dont allow gas. Will put the harley idea in the back of my mind for later though.Considering it's missing some stuff, build an harley engine, cam the hell of it and slap it and the trans into it. Straight pipe it too
- Thread starter
- #19
Don't. Motorcycle engines are too hard to cool. I did a fan cooled 540cc snowmobile engine in one and while STUPID fast, it wasn't fun. Steering, suspension, weight balance etc. is just not designed for more than 20hp and 30mph or so and honestly it was just too fast to have fun on. Had to wear a helmet, be sober, etc. I put a 414cc pressure washer style engine in another cart and that has been way more useful and fun.
NOODLES
Meat Head
6v batteries in series have more capacity and longer run time than 3 12v's. Even the rv dudes that have 2 or 3 12v batteries typically go to 6v batteries for more reliability and longer run times than the 12v systems. Which is probably why everyone that mentions "3 12v batteries" gets no responses in this thread.
Captain Call
No
Does that hold true going to lithium 12v as well? Just asking cause I'm not sure.
NOODLES
Meat Head
No idea bud. I did not write the rules. Lithium is not known for its long usable power though. I guess it would be great of you were doing quick races on your gold cart. I would use the same rule of thumb as you would on a motorcycle. Lithium will spend that starter with more power, but shorter run time.
Captain Call
No
Okay. I was just thinking cause I went with them in my 5th wheel and they smoke the traditional 12v batteries it might be an option.
- Thread starter
- #25
I think the other factor is continuous discharge rate. Need more batteries for lower C rate for durability more than range. Not sure.
[486]
smell-o-vision
wonder how many of them are being mindful of cell balance
that is one neat feature of running twice as many battery cables, you can charge all the batteries individually if you get a tardedly expensive charger
NOODLES
Meat Head
What is the price of a 6v charger that will charge a bank of 6v batteries? The charger is typically a generator or a shore power to inverter charger. How much is a charger that will charge say a bank of 3 12v batteries? And let's assume 2 banks of 6v batteries. And how much are the cables? Are you assuming 1 battery is in a different zip code than the other? Cables are a 1 time purchase unlike the batteries.
NOODLES
Meat Head
A charger that will recharge 1 bank of 3 12v batteries is that same charger that will charge just one. Same with the 6v chargers. Maybe you are wondering about rate? Like to keep up with load and charge at the same time? Which that is not part of the original question on powering a golf cart.
NOODLES
Meat Head
And he is not asking about a replacement charger.
tracyb
Well-known member
i replaced the lead acid 1700lbs battery in the forklift i use nearly every day with some lifepo4 batteries amazon had a deal on, 2-3yrs ago. the replacements are only about half the ah rating of the original. but it has been awesome, never think about water levels etc.
i'm running 6 batts series parallel for 24v, charge them hooked up as they are witha cheap amazon charger and dont have a problem. all in i was around $600 iirc
correction, i do have an issue occasionallly. when loaded the batteries bms will trip when i hit around 10ft. over loads the max amps out on the bms and they will shut down for 5 min or so. so i've just gotten used to giving it a 5-10second break at 8ft, and go on. i have a remote to use it as a manlift too have never shut down with just me and gear on it.
not a chance i would use anything other than the lipo batts. cheap, no maintenance, bms manages the details. i think i can blu toof
i'm running 6 batts series parallel for 24v, charge them hooked up as they are witha cheap amazon charger and dont have a problem. all in i was around $600 iirc
correction, i do have an issue occasionallly. when loaded the batteries bms will trip when i hit around 10ft. over loads the max amps out on the bms and they will shut down for 5 min or so. so i've just gotten used to giving it a 5-10second break at 8ft, and go on. i have a remote to use it as a manlift too have never shut down with just me and gear on it.
not a chance i would use anything other than the lipo batts. cheap, no maintenance, bms manages the details. i think i can blu toof