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  1. 12v. car batteries ... resting voltage ? When to replace

    Jan 12, 2006 · What should the resting voltage of a 12v. car battery be , 2 hours after driving the car 8 miles ? I think when bought new , the voltage is 12.70 volts. What resting voltage would …

  2. What CR2032 open circuit voltage is considered "dead"

    Apr 15, 2001 · I just measured the open circuit voltage of a spent cell and it's reading 3.01 volts. Is this considered "dead"? Being a 3V cell, I would think that is still an acceptable voltage so I'm …

  3. how to tell if a 12 volt lead acid battery is toast

    Oct 27, 2007 · I have several car and mower batteries (12 volt lead acid) that appear to charge completely but are unreliable, often dead. What is the symptoms of a bad lead acid battery?

  4. What is the fully charged voltage of NiMh batteri?

    Dec 1, 2004 · Can anybody tell me what the IMMEDIATE fully charged to capacity voltage of a NiMh battery should be? I mean either hot from the charger, or after no more than one hour …

  5. When is a NiMH battery fully charged? - Candle Power Flashlight …

    Jul 15, 2007 · Is there a voltage when a NiMH battery, in this case size AA/AAA, is fully charged? I had an Eneloop battery charger that would charge both my Eneloop and UniRoss cells to …

  6. Powering a camp lantern with a car battery?

    Jul 24, 2020 · If the voltage difference was greater then the lantern incorporated a circuit to reduce the car battery voltage to that produced by the internal battery. Run time varied …

  7. is a li-po 4s 14.8v, the CHEAPEST WAY to jump start a car (with …

    Aug 16, 2014 · A fully charged lead acid car battery rests at 12.8v or so, not the 14.4 to 14.7 as you state. A few AGMS will be 13v. My Northstar is 13.06v. 14.4 to 14.7 is the absorption …

  8. Battery Date Code Decoder for NiMH, Rayovac, Duracell, Eneloop ...

    Aug 18, 2015 · Battery age is useful in determining application, cycles, usage, and general health of a battery, for example I use older or "tired" batteries with high cycle counts for low drain …

  9. Should Flashlight Charger Run Down A Car Battery?

    Aug 10, 2002 · A new battery on a full size car is about 80 amp hours, and the demand from the electronics with the car off is typically on the order of 80ma, so when new, it is good for about …

  10. Car voltage fluctuation advice | Candle Power Flashlight Forum

    May 27, 2011 · The voltage will fluctuate depending on a number of things, eg. The alternator is charging/not charging the battery, whether or not the aircon is running. If your light is designed …