Charging Batteries / OBC Issues

[Stevegrmich]

Originally Posted by sweade

Do you think the batteries are ruined now. How can I test the computer. I saw that there is a way to reset it. I don't know if that would work or if it is completely broken. What do you suggest ?

. . the only way to know state of batteries is to charge them properly, load test them and check the SG of the individual cells . . . as for OBC, you stated that you have bypassed it for several years . . . what prompted you to bypass the OBC in the charger relay to begin with?

[sweade]

We removed a wire from the charger itself so the golf cart would charge. When we would plug it in, the charger would not start so I read to alter the charger so it would work. I assumed the OBC went bad.

[Stevegrmich]

Originally Posted by sweade

We removed a wire from the charger itself so the golf cart would charge. When we would plug it in, the charger would not start so I read to alter the charger so it would work. I assumed the OBC went bad.

. . . you removed a wire or jumpered a wire? . . . in any event, you should either replace the OBC (if bad) or get a smart charger like ScottyB sells . . . "guessing" a charge cycle will destroy your batteries over time . . .

[sweade]

what is it that Scotty b sells ?

Originally Posted by sweade

what is it that Scotty b sells ?

link ---> http://www.cartsunlimited.net/48v_Battery_Charger.html

[jakesnake27]

I would do an OBC reset, then wire the charger so it doesn't bypass the OBC.
Plug it in and see what happens. If it doesn't come on, OBC is most likely bad.

[RPatten]

Originally Posted by crash test dummy

link ---> http://www.cartsunlimited.net/48v_Battery_Charger.html

I am curious and not meaning to take from this thread and I think it is somewhat related....if you get Scotty's charger to use on a cart with an OBC, can you do away with the OBC?

My question is assuming that the charger is bad and nothing else. I am anticipating trouble. I seem to find it.

[jakesnake27]

Originally Posted by RPatten

I am curious and not meaning to take from this thread and I think it is somewhat related....if you get Scotty's charger to use on a cart with an OBC, can you do away with the OBC?

My question is assuming that the charger is bad and nothing else. I am anticipating trouble. I seem to find it.

Yes the OBC goes away.
With a DPI, is it 100% automatic and all the brains are in the charger.

[RPatten]

Originally Posted by jakesnake27

Yes the OBC goes away.
With a DPI, is it 100% automatic and all the brains are in the charger.

And the only thing the OBC is for is the control of the charging?

If that is so, why didn't they put it in the charger to start with?

[Sergio]

The answer depends on which specific OBC. The versions for Series carts, and I believe perhaps the earlier regen models, were used for charging and fleet diagnostics. The reason it is not in the charger itself is because it does something that no other charger in the market can do, which is to measure the amount of energy that was used since the previous charge and make sure the batteries are not over or under charged.
In the newer Sepex models like the Excell system, it also works with the controller during the Regen period to make sure is safe to raise the package voltage any higher.