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Old 09-12-2013, 05:45 AM   #11
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I have used the plus on my motorcycle battery for years. It is left on when ever the bike is not being used. By leaving the tender on I get approx. twice the battery life. Would never be without one. I also use it to do both of my boat batteries at the same time. Just hook them together.
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Old 09-12-2013, 07:57 AM   #12
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Agree completely with Mikegjax. Motorcycle, commercial mower, tractor, and boat batteries are on their Tender's whenever the units are not in use. TV is on Tender during winter storage, as is the TT'ers, and no batteries are brought indoors. I got 8 years of service from my mower battery, five (so far) from the boat trolling battery, and five on the tractor, and counting. All my Tenders have paid for themselves several times over through extended battery life, and I wouldn't be without them.

The commercial mower was purchased new in 2005, and a Tender was used on its battery from day one. It gave out this summer, and lasted 8 years to the month. While I'm certain this one is an exception, I have no doubt the Tender provided several extra years of service. I have no affiliation with that company, just a very satisfied user.
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Old 09-12-2013, 04:28 PM   #13
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Here's another suggestion, I do this for my boat battery in winter while I'm south doing the snowbird thing. Say do I need to send a royalty to Anne Murry for mentioning snowbird? I use a seven day manual timer have it turn on for 2-3 hours every third day feeding my battery charger. Works great! The batteries are always charged, no sulfate is forming and very little water loss occurs. If water loss occurs it means that the battery life is nearing it's end as the transfer of electrons from the positive plate to the negative plate is not being retained on the negative plate.
The manual timer will be unaffected by load, power failure etc. and will resume normal operation after any power interruption. Hope this helps
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Old 09-12-2013, 06:57 PM   #14
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I use Battery Tenders on both my lawn tractor and trailer battery. A firm believer. Only caution is to check the electrolyte level periodically; I failed to do this on my mower battery and battery failed after 5 years by going dry. You should check the level periodically with or without it being hooked to a charger.
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Old 09-12-2013, 07:58 PM   #15
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Originally Posted by gljurczyk View Post
Herk, do you know if your batteries will go into float mode being that the propane detector and the radio are wired direct to the panel without a switch? Will the WFCO recognize those as a load? I know WFCO say's no load can be detected for 48 hrs, for the charger to go into float. If it detects a load it will stay in absorption @ 13.6v I leave my unit plugged in all year round at my home.
13.6 IS Float. 14.4 is abs mode.
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Old 09-12-2013, 08:01 PM   #16
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I use Battery Tenders on both my lawn tractor and trailer battery. A firm believer. Only caution is to check the electrolyte level periodically; I failed to do this on my mower battery and battery failed after 5 years by going dry. You should check the level periodically with or without it being hooked to a charger.
If the battery tender is evaporating the liquid from your battery over time, then it is overcharging them by definition.
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Old 09-12-2013, 11:00 PM   #17
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Respectfully disagree. Overcharging a lead acid battery will accelerate electrolyte loss. The lawn tractor battery was not a sealed lead acid battery; it was my negligence that resulted in the failed battery (I let it run low on electrolyte). I believe the battery would have lasted years longer if I had monitored electrolyte level.
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Old 09-12-2013, 11:08 PM   #18
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http://www.trojanbattery.com/tech-su...intenance.aspx
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Old 09-15-2013, 08:53 PM   #19
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I'll be bringing both of my gel cell batteries in for the winter after we are done camping and hooking them up to the tender, in parallel.. Been doing it on my quad and argo and haven't had an issue in years...
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Old 09-16-2013, 04:04 AM   #20
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13.6 IS Float. 14.4 is abs mode.
The WFCO #8955 per my manual and the web site states 3 mode charger. Float 13.2, absorption 13.6 charging 14.4. I have now disconnected both the propane detector and the radio, the only things that I can find that could cause a load to be recognized by the unit. At 10:30 AM it will be 48 hours. There statement is that it takes 48 hrs. of no loads being detected at all to go into float 13.2. I will see later today, if not my dealer will be replacing that convertor. I have not ever had a reading before of 13.2 mine stays in absorption at 13.6...
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