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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV.



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Old 03-07-2017, 10:33 PM   #1
jmauld
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Default 48v pack differences.

I've seen the discussions that focus on battery life and that the six 8V batteries will last longer, both throughout the day and over the lifetime of the pack.

But, if your daily usage is limited to ~5 miles, and you wanted to maximize speed/torque which pack would be best, assuming similar quality batteries.

12v pros/cons
Less weight, but also less lead for power delivery
Less resistance???

8V pros/cons
More weight, but more lead for battery stability
More internal and wiring resistance

Can both packs deliver the same amount of instantaneous current?

I don't think there would be much difference in price as the 12 v batteries seem to be more expensive per battery, and I've seen the consensus that the 12v batteries will need replacement more often.
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Old 03-08-2017, 12:53 AM   #2
Conradconrad
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Default Re: 48v pack differences.

Cost isn't too much of a difference, is your cart designed for four 12vs ? If so the space for 2 more batteries could require some elbow grease otherwise just go 6-8v it's been the standard and will give you more peddle time which means you discharge the battery less percentage wise when you do drive it which when paired w a good charger will last longer in terms of battery pack years of life
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Old 03-08-2017, 08:40 AM   #3
jmauld
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Default Re: 48v pack differences.

It's a 6 battery cart already, so battery space isn't an issue.
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Old 03-08-2017, 08:59 AM   #4
scottyb
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Default Re: 48v pack differences.

Battery power is amperage. Amperage is stored and drawn from the battery when it is in use. Basically, the higher the battery voltage is the lower the battery amperage capacity is. So there is more fuel (amperage) in an 8v battery than a 12v. When both are configured into a 48v pack the 8v batteries will offer longer run time and a bonus - a longer useful life.
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Old 03-08-2017, 01:31 PM   #5
JohnnieB
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Default Re: 48v pack differences.

Since the cart is only driven about 5 miles daily and most likely running a 500A or smaller controller, the differences between a 4 x 12V pack and a 6 X 8V pack will be slight, other than Range and Lifespan.

Comparing T-875 (8V - 170AH) batteries and T-1275 (12V - 150AH) batteries, range and lifespan are about 14% better with the 6 X 8V pack.

Top speed will be close to the same with either since both are 48V packs. The T-875 pack is about 50 pounds heavier, so the max acceleration rate would appear to be slightly less, but the T-875 pack has 20AH more storage capacity, so the voltage drop per 100A of current draw will be less and more watts will be delivered to the motor, which more or less cancel each other out.

Attached is a chart I put together comparing various Trojan batteries in RXV's, but it applies to any make/model 48V cart.

Personally, I prefer the 6 X 8V pack, but I'd probably go with the one that had the lowest initial cost.
Attached Images
File Type: jpg RXV 12V vs 8V Trojan batteries.jpg (189.9 KB, 0 views)
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