|
Electric golf carts Harley Davidson, Melex, Pargo, Taylor-Dunn and other Misc. Carts. |
|
Thread Tools | Display Modes |
03-07-2016, 11:11 AM | #1 |
Not Yet Wild
Join Date: Mar 2016
Posts: 50
|
Battery Load Test
I have purchased and installed an digital battery volt meter for my 48 volt cart. I want to test my golf cart batteries under a load test. I have charged up the cart and let it sit for about 12 hours. I assume I should drive the cart on a normal flat street. But what voltage reading should I get when testing it under a load? what would indicate the batteries are good or bad? not sure what kind of drop in voltage I should get under a load test.
|
Today | |
Sponsored Links
__________________
This advertising will not be shown in this way to registered members. Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum |
|
03-07-2016, 11:27 AM | #2 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
|
Re: Battery Load Test
A bigger load than flat street would be better.
Find a hill and get some big friends to ride along Typically you don't want to see a reading lower than the starting voltage minus 1 battery from the pack. So 38v starting point minus 1 6v battery or 32v under heavy load 50 starting minus 8v = 42v low reading under heavy load. If lower reading is gotten repeat the test for each individual battery using a handheld meter an alligator type clips. A 6v battery should not drop below 5v An 8v battery should not drop below 7v And a 12v battery shouldn't go below 11 volts |
03-07-2016, 11:39 AM | #3 |
Not Yet Wild
Join Date: Mar 2016
Posts: 50
|
Re: Battery Load Test
OK, so here are the results of my 48 volt cart (I have six 8 volt batteries). I started off at 50.7 volts. When I rode it on level ground the reading was 47.6 then I went up a fairly big hill and the reading was 45.5 volts. What are your thoughts on these readings?
|
03-07-2016, 11:41 AM | #4 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
|
Re: Battery Load Test
I see you are not reaching full capacity initially. (unless inline resistance is giving a lower than actual reading)
And I see your draw down is fairly significant for one rider |
03-07-2016, 11:50 AM | #5 |
Not Yet Wild
Join Date: Mar 2016
Posts: 50
|
Re: Battery Load Test
you mean the start off should be 50.9 instead of 50.7? I was the only one on the cart BUT I weight about 320. (what is inline resistance)?
|
03-07-2016, 11:56 AM | #6 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
|
Re: Battery Load Test
|
03-07-2016, 01:07 PM | #7 |
Not Yet Wild
Join Date: Mar 2016
Posts: 50
|
Re: Battery Load Test
oh ok. The difference in the in dash meter and what my handheld volt meter says is only about .3volts. So the volt pack should be 50.9 to start with right? What would be a normal droppage of volts if I start off at 50.9 and go up a pretty steep hill in your opinion?
|
03-07-2016, 01:51 PM | #8 |
Happy Carting
Join Date: Dec 2007
Location: Southern California
Posts: 73,356
|
Re: Battery Load Test
Copied from post #2
Typically you don't want to see a reading lower than the starting voltage minus 1 battery from the pack. So 38v starting point minus 1 6v battery or 32v under heavy load 50 starting minus 8v = 42v low reading under heavy load. If lower reading is gotten repeat the test for each individual battery using a handheld meter an alligator type clips. A 6v battery should not drop below 5v An 8v battery should not drop below 7v And a 12v battery shouldn't go below 11 volts |
03-07-2016, 02:07 PM | #9 |
Not Yet Wild
Join Date: Feb 2016
Posts: 64
|
Re: Battery Load Test
ok, so since mine is reading at 46.7, then I should be in good shape right? Im in the same boat. I just don't know what threshold is a good reading. I read somewhere you don't want a battery to drop more than .4 or .5 of a volt under load.
|
03-07-2016, 04:26 PM | #10 | |
Not Yet Wild
Join Date: Mar 2016
Posts: 50
|
Re: Battery Load Test
Quote:
|
|
Tags |
battery, load, test |
|
Thread Tools | |
Display Modes | |
|
Similar Threads | ||||
Thread | Forum | |||
how to load test battery if no load tester | Electric Club Car | |||
Battery Load Test | Electric EZGO | |||
1 battery failing load test replace 1 or all??? | Electric EZGO | |||
battery load test results w/ new purple | Electric Club Car |