possible dead battery?, 11.78 V |
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possible dead battery?, 11.78 V |
914 RZ-1 |
Jun 10 2018, 09:56 PM
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#1
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Porsche Padawan Group: Members Posts: 682 Joined: 17-December 14 From: Santa Clarita, CA Member No.: 18,230 Region Association: Southern California |
1. My car has been sitting for awhile, but it has started up when I needed it to.
I recently took out and put back the transmission. I got everything hooked up and the car would not start. I took a reading across the battery terminals and got 11.87 volts. Is this an indication of a dead battery? 2. I should mention that I unhooked the positive and negative terminals while the trans was out. I also have a battery disconnect on the negative terminal (turn a screw to connect/disconnect). I got sparks when I hooked up the positive and touched the wrench to the car accidentally. 3. I have an Optima Red Top battery that is only about 1-2 years old. 4. I checked all the wire connections related to the trans and didn't see anything. That shouldn't matter anyway, I think. 5. I'm thinking of jump-starting the car and seeing if that works. 6. I'm also thinking of getting a battery charger and hooking that up. Thoughts? |
PlaysWithCars |
Jun 11 2018, 11:52 PM
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#2
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Senior Member Group: Members Posts: 521 Joined: 9-November 03 From: Southeast of Seattle Member No.: 1,323 Region Association: Pacific Northwest |
I'm a fan of the BatteryMINDER brand chargers. They have a de-sulfation pulse mode when trickle charging that conditions the battery plates and breaks up the crystals that collect on the plates. It also has an AGM charging mode that adapts the charge profile to match the needs for Optima, Odyssey, ... batteries.
I'm not a fan of Optima batteries. They are more battery than we need in our cars and quality is not consistent. I used an Odyssey PC680 in my -4 for years and have been using one in my -6 for many years and its been working great. |
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