72 volt or 48 volt longer runtime?

ssc351 · 06-26-2009, 01:52 PM

All else the same, will a 72 volt system or 48 volt system give a longer runtime? (neglecting the extra weight in batteries with the 72 volt system)

Anyone have any numbers for their 72 volt system for lengths or times before chargers?

Andy4639 · 06-26-2009, 07:23 PM

Mine will ride right at 20 miles on a charge. I can ride it pretty much all day at the beach. It's 6.5 miles one way to my house to Ocean Lakes campground and I ride it around inside before I come home too! That's running wide open for basically 13 miles up and back on the main roads.

dereckbc · 06-26-2009, 11:17 PM

Run time is determined by Amp Hour capacity of the battery system for a starting point. Most do not factor in discharge rate and the CORRECTION Factor and try to use the 20 hour discharge rating to figure time which is a error, huge error

Basically:

T = (AH/L) C

Where:

T = Time in hours
AH = Amp Hour rating of battery
L = Load in amps
C = Correction factor based on discharge rate, less than 1 down to .2 for heavy discharge rates for EV's

ssc351 · 06-27-2009, 02:09 AM

Quote:

Originally Posted by dereckbc

Run time is determined by Amp Hour capacity of the battery system for a starting point. Most do not factor in discharge rate and the CORRECTION Factor and try to use the 20 hour discharge rating to figure time which is a error, huge error

Basically:

T = (AH/L) C

Where:

T = Time in hours
AH = Amp Hour rating of battery
L = Load in amps
C = Correction factor based on discharge rate, less than 1 down to .2 for heavy discharge rates for EV's

Ya but isn't there less load for a higher voltage system...meaning if both carts are going 20mph, the 72 volt cart will be using less load than the 48 volt cart (all else the same). Right?

ruredy · 06-27-2009, 07:52 AM

Quote:

Originally Posted by dereckbc

Run time is determined by Blah, blah, blah, blah, blah

Every time this guy post something it's like someone running their fingernails across a chalk board to me. He finds fault in everything. makes me want to smack him in the head with a boat paddle.
Y'all do yourselves a favor and put this sad sack on ignore like alot of other people

scottyb · 06-27-2009, 08:00 AM

Sad Sack

Otter70 · 06-27-2009, 08:38 AM

No one told me there would be Math this morning

Andy4639 · 06-27-2009, 08:54 AM

I don't do math! I do riding time. I could care less what the battery label says. It is a good starting point but seat time is what I go by.
When I say riding it I mean riding it.

Pimp Daddy · 06-27-2009, 09:05 AM

Quote:

Originally Posted by Andy4639

Mine will ride right at 20 miles on a charge. I can ride it pretty much all day at the beach. It's 6.5 miles one way to my house to Ocean Lakes campground and I ride it around inside before I come home too! That's running wide open for basically 13 miles up and back on the main roads.

Andy,
Going to be around Ocean Lakes during the 4th?

scottyb · 06-27-2009, 09:46 AM

Quote:

Originally Posted by Andy4639

I don't do math! I do riding time. I could care less what the battery label says. It is a good starting point but seat time is what I go by.
When I say riding it I mean riding it.

Yep. Most of us have been around the block to know that amp/hr tests are not all conducted the same and the results can be misconstrewed by the advertising division and whala..... Andy is correct; seat of the pants driving is the best judge of a system!

06-26-2009, 01:52 PM	#1
ssc351 Not Yet Wild Join Date: Jun 2009 Posts: 33	72 volt or 48 volt longer runtime? All else the same, will a 72 volt system or 48 volt system give a longer runtime? (neglecting the extra weight in batteries with the 72 volt system) Anyone have any numbers for their 72 volt system for lengths or times before chargers?
ssc351 Not Yet Wild Join Date: Jun 2009 Posts: 33

06-26-2009, 07:23 PM	#2
Andy4639 48/400/Alltrax HS motor Join Date: Jan 2007 Location: Liberty SC, Garden City SC Posts: 6,190	Re: 72 volt or 48 volt longer runtime? Mine will ride right at 20 miles on a charge. I can ride it pretty much all day at the beach. It's 6.5 miles one way to my house to Ocean Lakes campground and I ride it around inside before I come home too! That's running wide open for basically 13 miles up and back on the main roads.

06-26-2009, 11:17 PM	#3
dereckbc Gone Wild Join Date: Nov 2008 Posts: 240	Re: 72 volt or 48 volt longer runtime? Run time is determined by Amp Hour capacity of the battery system for a starting point. Most do not factor in discharge rate and the CORRECTION Factor and try to use the 20 hour discharge rating to figure time which is a error, huge error Basically: T = (AH/L) C Where: T = Time in hours AH = Amp Hour rating of battery L = Load in amps C = Correction factor based on discharge rate, less than 1 down to .2 for heavy discharge rates for EV's
dereckbc Gone Wild Join Date: Nov 2008 Posts: 240

06-27-2009, 08:00 AM	#6
scottyb Happy Carting Join Date: Dec 2007 Location: Southern California Posts: 73,408	Re: 72 volt or 48 volt longer runtime? Sad Sack

06-27-2009, 08:38 AM	#7
Otter70 Gone Wild Join Date: Feb 2008 Location: Virginia Beach, Virginia Posts: 234	Re: 72 volt or 48 volt longer runtime? No one told me there would be Math this morning

Today
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06-27-2009, 08:54 AM	#8
Andy4639 48/400/Alltrax HS motor Join Date: Jan 2007 Location: Liberty SC, Garden City SC Posts: 6,190	Re: 72 volt or 48 volt longer runtime? I don't do math! I do riding time. I could care less what the battery label says. It is a good starting point but seat time is what I go by. When I say riding it I mean riding it.

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