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Electric EZGO Electric EZ GO Marathon, Medalist, TXT and RXV. |
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05-27-2012, 08:57 PM | #1 |
Let's go racin' boyz!!
Join Date: Oct 2010
Location: Springdale, AR
Posts: 4,156
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So I'm searching for a new charger.......
..since my ProTech just died. I really do want to keep an onboard but I'm not going to buy another ProTech considering the issues that me and some others have had with them. In my seach I find these chargers.......
Quick Charge On Board Chargers At the bottom of the page is a chart showing which charger is right for each battery. I run the T890 8v Trojans which have a 190 amp hour rating. According to the chart at the bottom of the page perhaps I should be getting the 25 amp charger instead of the 15 amp. On the Quick Charge home page in the FAQ's I see this... "How do I size a charger to my batteries? With lead acid batteries you usually use the 10% rule. That is, the charger rating should be about 10% of the amp hour capacity @ the 20 hour rate, so if your batteries are rated at 250 amp hour you would select a 25 amp charger. This is not a hard and fast rule, and you can stray from it with the understanding that the farther you stray, the less life and or performance you will receive from your batteries." Now that begs the question, is there more perfomance to be had or perhaps longer life if one charges at a higher amp level with the higher amp hour rated batteries? There is about $100 difference in the 15 amp and the 25 amp chargers. Thoughts? |
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05-27-2012, 09:36 PM | #2 |
Gone Wild
Join Date: Aug 2010
Location: Marion, Ohio
Posts: 1,391
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Re: So I'm searching for a new charger.......
For $100, I'd spring for the 25a. It would be nice to know you had those extra amps if you needed them. I've never seen my TC III go over 18 or so, though. I can't imagine how far down you'd have to drain the pack for it to draw 25 amps.
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05-27-2012, 10:12 PM | #3 |
Getting Wild
Join Date: Jul 2011
Location: Myrtle Beach, SC
Posts: 142
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Re: So I'm searching for a new charger.......
How long did you have yours for? They replaced mine after close to a year when it died. Of coarse the one the sent me died a couple of weeks later, so I just put in another new one. Still have the old one waiting to be shipped back. Call Pretech and see what they say.
I am with you, can't go without the OBC. I will be on the cart a bunch tomorrow, so I will have an extension cord just in case. The Sam's Club Stanley charger is on my shopping list for a back up though. |
05-27-2012, 10:33 PM | #4 | |
Let's go racin' boyz!!
Join Date: Oct 2010
Location: Springdale, AR
Posts: 4,156
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Re: So I'm searching for a new charger.......
Quote:
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05-28-2012, 08:15 AM | #5 |
Gone Wild
Join Date: Aug 2010
Posts: 183
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Re: So I'm searching for a new charger.......
I bought one of them Pro tech onboards remanufactured off E-Bay. I thought it was a new unit, lasted about 4 months,complete junk.
Then sprung for a new one from Scotty, lasted about the same, maybe 6 months. |
05-28-2012, 08:20 AM | #6 | |
Let's go racin' boyz!!
Join Date: Oct 2010
Location: Springdale, AR
Posts: 4,156
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Re: So I'm searching for a new charger.......
Quote:
One issue that I've seen from the start on my cart is that the batteries would never hold 100% charge. They would always settle out to about 80%-85%. Now I'm wondering if that wasn't the ProTech charger not being able to really charge these bigger batteries to 100%. |
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05-28-2012, 10:41 AM | #7 | |
Techno-Nerd
Join Date: Jun 2011
Location: West Virginia
Posts: 19,654
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Re: So I'm searching for a new charger.......
Quote:
They would only hold about a 85% charge until I started playing with them. I was going to replace them, so I figured I couldn't hurt them and charged the living daylights out of them with a Powerwise II. I charged them every night whether I used cart or not. Sometimes I would initiate two, three and four charges back to back. After a couple months, they were holding about 95% and I decided I didn't need new batteries before the next spring. I wanted to experiment with higher cut-off voltages and got a DPI charger from Scotty to use while I was modifying my PW-II. (And as a backup in case the PW-II started misbehaving, or the smoke escaped. ) The DPI has a higher bulk charge rate than the PW-II (20A vs 15-18A) and has a 39.7V float. After using it a couple months, my pack is now holding about 98% after a 12 hour rest. FWIW: I drove it in the local Memorial Day Parade, a little over 5 miles, and still had 85% when I got home. (About 3 miles @ up to 18 MPH to/from and about 2 miles of start & stop & creeping along behind a high-school marching band) Of course I've got a 36V pack of T-105s while you've got a 48V pack of T-890s, but I believe the same principles apply. Routine high bulk charge rate followed by float charge after the absorption phase just might liven up that battery pack a bit. |
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05-28-2012, 10:46 AM | #8 |
Let's go racin' boyz!!
Join Date: Oct 2010
Location: Springdale, AR
Posts: 4,156
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Re: So I'm searching for a new charger.......
Thanks for the info!That was my thought also especially after reading the stuff on the charger website and given the difference in settled voltage after charging with the Schumacher charger vs the ProTech. Quick Charge recommends a 25 amp charger for any battery rated between 150 ah and 300ah. I'll be calling them first thing in the morning to see if they can get me one overnighted without breaking the bank.
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05-28-2012, 12:45 PM | #9 |
Getting Wild
Join Date: Nov 2009
Location: Mayo, FL
Posts: 146
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Re: So I'm searching for a new charger.......
I had a Delta-Q onboard till it quit working after 4 months, I thought it was the best thing until I got my DPI charger from Scotty B. The battery pack is performing noticeably better than before. I am recommending the DPI charger.
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05-28-2012, 01:01 PM | #10 | |
Gone Wild
Join Date: Oct 2010
Location: Panama City, FL
Posts: 1,408
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Re: So I'm searching for a new charger.......
Quote:
-sj |
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