How to Upgrade 36V Golf Cart Batteries to Lithium LiFePO4 | Eco Worthy 100Ah

[@curtw8827]

I just did the same change over on a 2004 Ezgo TXT. Exactly the same batteries. My 36/12 converter is switched on with a key-on relay since standby currenet is 1/4 Amp. I didn't put in a balancer since I charge each 12v battery separately. Works fine, 300 lbs lighter.

[@TunerwithKids]

You need the balancer if charging separately. It’s important for all batteries to have same voltage due to resistance. Imbalance will prematurely kill batteries.

[@MrGeezer101]

5/31/24. I did the same install and just bought the same balancer that you used. It doesn't say anything about using only 3 ports or anything about 36 volts ?

[@TunerwithKids]

@MrGeezer101 that’s how they work. Hook it up yo each battery and it will balance the charge.

[@curtw8827]

@@TunerwithKids Hook the leads up in sequence starting at one end, the 4th set of leads stays unconnected if you only have 3 batteries.

[@samtrosper7224]

If you went to 48volt I think you would be happier.

[@GAQ0709]

Great video Thanks

[@thezsigas]

Thank you for the info! How is it holding up? What is your range? Do you think those batteries would work on the freedom mode ezgo speed controllers with larger tires?

[@TunerwithKids]

It’s fast and constant 13Mph. I get about 40 miles per charge. It does 5% drain per round trip, 2 miles to kids school.

[@eddierivera3928]

@@TunerwithKids What was the speed of your golf cart before you switched to the lithium? Did you gain any speed? If so, was it torque or top speed? Thanks for the help.

[@TunerwithKids]

@eddierivera3928 more off the line torque but no more top end speed. That’s dictated by motor and controller.

[@davidberry1379]

lead battery maintenance if you need to add water...add enough to cover your plates but thats all..then charge, then top off your water (distilled only).the reason why you had overfill spill

[@chestermiller4863]

How is the batterys working out 5 months down the road

[@TunerwithKids]

Going good. We use cart everyday for about 4 to 5 miles and charge it once a week. During summer when it sat, the battery balancer and voltage converter drains the batteries after 3 weeks of sitting.

[@ALRinaldi]

What is that lift you have in your garage... would love to have one of those!

[@TunerwithKids]

Here’s the video kzbin.info/www/bejne/bHOqdKSwgN-kmtUsi=vIKDTM0PngDnJunR

[@greencactusgaming2101]

I am doing a swap on a 48 volt Yamaha golf cart with the exact same batteries. I've already purchased the batteries but upon doing more research it looks like the max 100 amps continuous may not be enough. just wondering if you had any problems with the BMS over current triggering and if so how do you reset.thank you for your time

[@TunerwithKids]

You won’t hit 100amps. Even when I have a heave load, it’s like 65A max for like 2 seconds. At 48V, your amps will be less for the same power.

[@greencactusgaming2101]

@@TunerwithKids very nice glad to hear that. one last thing have you had any issue with rain it's quite rainy where I live and I'm debating building an enclosure for the batteries. also what chart do you use for deciding the state of charge, the manual that came with the batteries 13.48-12.85 or the one on the manufacturers website 13.6-10.0. your time is greatly appreciated thank you

[@TunerwithKids]

@greencactusgaming2101 it's sealed so water is not issue. I build that surround and it keeps water out. I use a shunt meter to track battery percentage.

[@ninjamaster3453]

Could you speak about the Florida infrastructure and culture for golf carts? It's a curiosity to those of us who don't use these outside of a golf course. What's a typical week of use?

[@TunerwithKids]

I use it to drop and pick up kids from school. So I do about 5 miles a day (2 round trips). The bumper to bumper traffic is crazy so this saves so much time.

[@chuckb1448]

Hi, ty for the video. I gotta ask about the voltage converter.... ive been seeing viewers make comments that the converter will drain your batteries. That confuses me actually, i run an ezgo txt and i have a pull toggle switch to turn the lights On and Off. I figured no power was being used if my lights weren't turned on, am i overlooking something or am i overthinking this lol? Ive seen viewers say you gotta put a voltage converter in and connecting it to your key switch. Thanks

[@TunerwithKids]

Physic says if electrons aren't moving then it shouldn't drain. So with converter, unless something is pulling amps, it shouldn't drain. The balancer does actively move charge between cells so it will drain some charge.

[@curtw8827]

The voltage converter draws about 1/4 amp doing nothing, so it will drain the batteries eventually. So mine only gets energized with the key on through a 36volt relay.

[@chuckb1448]

Did the other item you installed actually make noises when you completed the install and used your cart?

[@TunerwithKids]

That balancer does make a slight whine but nothing that people make a fuss about. It’s the balancer working and transferring juice between batteries.

[@chuckb1448]

Great video, I'm just curious... the battery charger had a D plug, could you have used that instead of changing to the connection you installed? I'm guessing you did that to have the flexibility to charge anywhere? My EZGO has a D connection outlet, I'd prefer to find a lifep04 charger with a D plug but I've not seen one except for possibly this one.

[@TunerwithKids]

Yea for charging anywhere. I already had to use it since I left the cart for 2 weeks and the bratty drained but the meter wasn’t reading accurately. I had to charge a mile from house using my car inverter to 120v.

[@cabnet636]

put a piece of wood behind square hole clamp then cut round hole