Marty Hill Posted September 4, 2017 Share Posted September 4, 2017 Have several I use to keep the bikes charged. Leaving for month and hooked one up to my Porsche...nothing! Will it work if left on longer or is it useless for a car battery? TIA! Marty Link to comment
Skywagon Posted September 4, 2017 Share Posted September 4, 2017 Marty...that's unusual. I use them on boat, motorcycle, car, truck, and airplane without issue. Maybe a cable issue or bad connection. Try it on something else before you chunk it Link to comment
Marty Hill Posted September 4, 2017 Author Share Posted September 4, 2017 David, I tried 2 different ones. Perhaps they need more time to get started charging? I'll hook one up and leave it for awhile to see if it starts charging. I'm really surprised at it's not working. Thanks! Link to comment
TEWKS Posted September 4, 2017 Share Posted September 4, 2017 To continue down David's path, how's the plug outlet? Do you use it often for other things? GFCI? Pat Link to comment
Marty Hill Posted September 4, 2017 Author Share Posted September 4, 2017 It's charging my bike right now. Really odd! Link to comment
KTM Doug Posted September 4, 2017 Share Posted September 4, 2017 I use them on my rv batteries all the time. I however use another brand other then Battery Tender. Should not matter. Drive it out and I will test it for you. Link to comment
Rex R Posted September 4, 2017 Share Posted September 4, 2017 Check the instructions and FAQ on their website. I believe that a tender will not work on a deeply discharged battery. Although, if you trick the tender into thinking that it is connected to a better battery, it will work. How to do that you ask? Connect a known, good battery to the the deeply discharged one (POS to POS, NEG to NEG, same voltage of course). Connect the tender to the discharged battery for an hour (or more, if nec). That may give it a sufficient charge to work. another option: use a booster pack or jumper cables to start the porshe. Drive it for 10-30 minutes to partially charge the battery. Connect the tender. Should work. I've used these techniques with success on depely discharged Odysseys. YMMV Link to comment
Marty Hill Posted September 4, 2017 Author Share Posted September 4, 2017 Hey Dougie. If that sucker charges the bike and doesn't charge the Porsche I have no idea what the problem is. Not a biggie, I can always get the car recharged when I return. Link to comment
Marty Hill Posted September 4, 2017 Author Share Posted September 4, 2017 Rex, the Porsche is fully charged. I drove it today. I'm about to leave for a month of riding in Europe so I want to put it on a charger. I've got another charger which I'll try later. Thanks. Link to comment
mrzoom Posted September 4, 2017 Share Posted September 4, 2017 Marty, charger on Porsche is bad. Let me come get it and keep it here for daily driver. I promise the battery will be fully charged. What are friends for?? Link to comment
Marty Hill Posted September 4, 2017 Author Share Posted September 4, 2017 My daughter has first dibs after I turn 90. Link to comment
Rex R Posted September 5, 2017 Share Posted September 5, 2017 I misread your original post, the first time around. Thought you HAD left for a month and surmised you returned to a dead battery. Tender should work on a car battery, albeit a little slower to bring it to a full charge. Good luck. Link to comment
Beemer Dood Posted September 6, 2017 Share Posted September 6, 2017 (edited) On a side note. Costco has a model of the Deltran Battery Tender that's made under their name. It's a 3 amp model, and will work with both 6 and 12 volt batteries. Without the Costco name, the same charger is about $75. Under the Costco name it's only $30, a screaming deal. I got three of them, one for my bike, one for the boat and one for the RV, that has both 6 and 12 volt batteries. It's out of stock at this moment but if you keep checking, it will pop up. Last time I went looking it took about a month for it to appear. Here's the link. https://www.costco.com/Battery-Tender-Power-plus-3-Amp-Charger.product.100241973.html?catalogId=10701&keyword=battery+tender&langId=-1&storeId=10301 Edited September 6, 2017 by Beemer Dood Link to comment
Marty Hill Posted September 6, 2017 Author Share Posted September 6, 2017 Thanks guys. I think Rex has the answer, it seems to be charging very slowly. Link to comment
Kathryn Hill Posted September 7, 2017 Share Posted September 7, 2017 My daughter has first dibs after I turn 90. I guess I better learn to drive stick, then! Link to comment
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