36 to 12 Volt Reducer

barsss

Installed this reducer tonight. Only have light kit running on it. The reducer makes a load humming noise. Is it supposed to, not liking it to much.



Thanks in advance for the help, Bryan

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gornoman

They can hum, depends on how they reduce the voltage. What is the output rating?

barsss

It is a 25 amp and the light kit came with a built in fuse holder and a 15 amp fuse. Can you recommend one that does not hum. That sucks, it is pretty load.

Thanks, Bryan

dougmcp

I'd bypass the reducer and wire your lights to 2 of your 6v batteries.
IMHO reducers are over rated. The draw from lights is almost nothing (10%) compared to the motor.
No reducer, no hum, no problems.

barsss

The only reason I went with a reducer was that I read a few post about battery wear using only two batteries for the twelve volts. Repeated charging on the two batteries would wear them out quicker. What is your feeling on that. I will be running a light set, radio, and maybe a horn.

Thanks, Bryan

bnall05

I installed a class 31 12 volt battery to run all my accessories off of.

dougmcp

It's not a simple answer. The solution by bnall05 is certainly a good one.
Consider what you do with your cart and what your power needs are.

If you drive your cart mostly with lights on and a radio, your power draw from that alone will be about 15 amps +/-.
2 Trojan T-105's will run that load for 12.5 hours before the batteries are depleted.
Your motor draws on average around 100 amps which is about 7 times as much as your accessories.
You battery pack with no accessories operating will run with a 100 amp load for about 1.4 hours.

When you are charging your batteries, the charger puts an equal voltage/amperage to the whole pack and any batteries that have a higher voltage than the lowest battery will be subjected to a slight overcharge until the lowest battery has charged. IMO this is negligible and nothing to worry about.

As an aside, EZGO does not use a reducer or converter to power their accessories, they use 2 batteries in the 36v pack.

monkey-1

I have done many carts either way. I have used the 2-6 volt batteries and then I have also used a voltage converter. When I use a converter, I use Astron 4812-12 or a 4812-20. Both are silent, have 30-56 volts input and provide a CLEAN 13.8 volts.

gornoman

I have been running a 12v tap off my pack for years and my batteries stay within .05v of each other. I used to shuffle the batteries around each year to "spread" the load, but my battery spreadsheet says it's a waste of time. Everyone's situation can be different.

monkey-1

I knew you were anal, but DANG GORNO!!