h a l f b a k e r yI didn't say you were on to something, I said you were on something.
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When I see that my car battery isn't in top condition (hard
starting, lights fadeing during start, etc) I connect it to one of
my (semi)intelligent chargers and let it on overnight. In the
morning I see the charger turned off or just showing the
charging current = 0 A (these chargers automatically
stop
charging when the voltage rises over xx Volts).
What I would like to see is a number showing Amper hours
that the charger pushed to the battery - this way I would see
when the battery capacity is decreasing and it's time to buy a
new one.
Even better would be graphs showing the voltage and current,
either on the charger display or via an app connected via
Bluetooth.
[link]
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Not a bad idea. It would also be nice if something similar were built into the car, to monitor battery health continuously. Or is that what you meant? |
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These things are already available for most types of battery, especially LiPos which are particularly sensitive. |
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I bought, for £4, a "usb charger doctor" which intercepts any usb charging cable, and displays the voltage, current and the time and mAh delivered since you last pressed the reset button. |
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Do you think USB is a practical method of charging a car battery? |
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Well the U stands for Universal, so I expect it would work swimmingly. |
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No, it's only "universal" for a series of buses. |
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Well, if it can charge a bus battery, it should easily be able to charge a car battery ... buses are much bigger, although they're probably on a 24V system. |
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//Do you think USB is a practical method of charging a car battery?// |
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Well, considering USB is 5V @ (IIRC) 0.5A and car batteries charge at 14V and hold 60-80AH, you'd need a voltage converter... and it's going to take awhile. |
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Agreed, but there is a certain beauty in having part in hand when asking for the replacement. |
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