2018 rxv

[The Villager]

How many miles should I get on a full charge.

When my meters reads empty, I have gone 23 miles.

Shop tells me that is about right.

When meter reads Empty, batteries show 49.5 volts on volt meter.

SOC chart reads 75% for 49.5 volts.

What am I missing?

[kernal]

You asked about this once already on Aug 20: http://www.buggiesgonewild.com/elect...olt-meter.html
July 16 was the last time I checked my range. After 17 miles I had 80% of battery remaining (49.9v). Two people on a RXV heavier than yours in Atlanta so not flat.

Your experience is common and why I don't have the factory gauge and did this:

[The Villager]

Read this line again.

When my meters reads empty, I have gone 23 miles.


Although My batteries were still 75 % full.

If you say my cart is normal, then I would get 75 miles at empty, not 23.

Is 23 miles at empty correct and my volt meter reading 49.6 wrong?

Or should my meter read empty at 75 miles.

They can’t both be right,

[meimk]

Understanding that 50% s.o.c. Is considered dangerously low and potentially damaging to the batteries. So you need to think of 60% or so as empty. Yes the cart will continue to move past that point, but unless you intended to buy batteries every year or so you don’t really want to go there. State of charge gauges test to be vague and unreliable, go with a digital voltage gauge to know where you really stand.

[kernal]

Originally Posted by The Villager

Read this line again.

When my meters reads empty, I have gone 23 miles.


Although My batteries were still 75 % full.

If you say my cart is normal, then I would get 75 miles at empty, not 23.

Is 23 miles at empty correct and my volt meter reading 49.6 wrong?

Or should my meter read empty at 75 miles.

They can’t both be right,

What I'm telling you is your meter is wrong. I'm assuming its the factory meter based on what you said in the other post. I'm saying it is common in my experience for the factory meters to be wrong so in that sense your cart appears to be "normal". Factory meters are usually pessimistic and frequently very wrong. As long as you are confident in the meter that you use to measure battery voltage, use that reading as your gas tank.

I have ridden in carts (RXVs) with the factory battery gauge showing more than half full when in a matter of seconds the gauge drops to empty including illumination of the amber warning light. Operation of the cart is not affected. This should trigger limp mode I think but of course it doesn't and the cart will go for many more miles.

75 miles is completely unrealistic but 20-30 miles without going below 50% charge is easily obtainable even in DC motored carts. (optimum conditions of course)

Occasionally an engineer will pop up here and say things like measuring battery capacity by voltage is stupid. They say use coulomb counting. Maybe you should look into that.