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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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11-07-2020, 07:14 AM | #1 |
Not Yet Wild
Join Date: Oct 2020
Posts: 36
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Powerdrive 3 charger 3 wire to 2 wire connector
I have an 88 marathon that I have upgraded to 48v. A friend gave me a powerdrive 3 charger that was for his old club car.
I want to put the correct 2 prong plug on this charger. I have cut the plug off and put ring terminals on the wires. The three wires are red 48+, black 48-, and blue which is labeled disconnect. If I put the blue with the black the charger turns on and charges the batteries at 15 amps. I am unsure if it will turn off when the batteries are charged however. Will it power down when batteries are full? If not is there a way to make it so? If not how long should I charge the batteries for? They are trojan 8 volt. |
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11-07-2020, 07:41 AM | #2 | |
Gone Wild
Join Date: Jun 2011
Location: Northern Indiana
Posts: 2,813
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Re: Powerdrive 3 charger 3 wire to 2 wire connector
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11-07-2020, 08:28 AM | #3 |
Not Yet Wild
Join Date: Oct 2020
Posts: 36
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Re: Powerdrive 3 charger 3 wire to 2 wire connector
What would be a safe voltage to cut off the charger at? I unplugged when I saw the voltage at 57 volts but as you said it was still at 15 amps. And I did not want to over charge the batteries. After about 12 hrs the pack was sitting at 49.5 volts. Which led me to believe they were not fully charged. I read somewhere on here full should be about 50.8 volts.
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11-07-2020, 08:40 AM | #4 |
Gone Wild
Join Date: Sep 2012
Location: Charlotte, NC
Posts: 9,329
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Re: Powerdrive 3 charger 3 wire to 2 wire connector
You cannot use that charger without the OBC to properly charge the batteries.
The reason for that is that the OBC does not really "tell the charger what rate to charge" but instead it controls the charging rate. If You only use the "bulk" current to charge You will not get more than 80% charge as the surface voltage will get higher than the actual battery. As soon as the surface charge dissipates the actual battery charge will be lower. |
11-07-2020, 10:57 AM | #5 |
Not Yet Wild
Join Date: Oct 2020
Posts: 36
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Re: Powerdrive 3 charger 3 wire to 2 wire connector
What would be a good replacement for a 48v charger with a 2 wire sb 50 plug?
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11-07-2020, 01:37 PM | #6 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: Powerdrive 3 charger 3 wire to 2 wire connector
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