Battery drain - MVAgusta.net
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post #1 of 27 (permalink) Old 04-06-2014, 07:49 AM Thread Starter
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Battery drain

Please, I know this is bit of a daft question, but I have had issues last few years with batteries going down, and not recharging enough to hold charge for a week.
I have noticed that on reconnecting the new battery for this years motorcycling enjoyment, there is a faint arc or flash when connecting up the earth lead. Thus indicating a power drain from some component or other.
Is this common on these bikes? I haven't noticed it before, but then again, never bothered to look. It was connect up and go... had this particular 06 model almost from new.

Last edited by jeteast; 04-06-2014 at 08:14 AM.
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post #2 of 27 (permalink) Old 04-06-2014, 08:11 AM
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Yes it is common on these bikes, that's why most guys use battery tenders, even worse if you have an alarm.

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post #3 of 27 (permalink) Old 04-06-2014, 08:16 AM Thread Starter
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Thought as much, but had to be sure before I started down the road of checking all the bits.
On my second optimate charger, Think the previous one had enough.....
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post #4 of 27 (permalink) Old 04-06-2014, 09:31 AM
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All bikes with modern electronics have a key off drain. Typically the clock function in the meter, but sometimes also the ECU (rare, but there are examples).

Use an ammeter across the main fuse to measure it. Typically a few milliamps. More than 8 or 9 is a bit high. Haven't checked my Gina's draw, but the original, properly serviced Yuasa is going on 5 years without a hitch.....and I do use a "smart" tender ( not a Battery Tender Jr).

I used to be fast....now I just dream about it.
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post #5 of 27 (permalink) Old 04-06-2014, 11:35 AM Thread Starter
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Smart tender ??? enlighten me please....
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post #6 of 27 (permalink) Old 04-06-2014, 12:05 PM
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Originally Posted by jeteast View Post
Smart tender ??? enlighten me please....
Think he means a smart charger.
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post #7 of 27 (permalink) Old 04-06-2014, 04:02 PM
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A "smart charger" is one that has circuitry to monitor the battery and provide a proper maintenance charge as needed. Most "dumb" chargers are simply low current constant rate transformers.....Battery Tender Juniors are like that.
Cheap but dumb.

Optimate 3+ or 4 chargers, NOCO Genius chargers and some others cost a bit more but will keep your battery healthy even when plugged in 24/7.
The dumb chargers will eventually cook your battery if left plugged in all the time.

The newest technology is full wave solid state rectification chargers like the NOCO. They do not use a transformer. They use the full wave for charging instead of half, therefore being more effecient and faster, and develop no heat so they can be sealed against the elements (no vents in the case).

I am currently using the NOCO Genius 1100. I highly recommend it. Not too expensive and very high tech.
I retired my Optimates after I checked out the NOCO.

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post #8 of 27 (permalink) Old 04-06-2014, 04:18 PM
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I also have one Genius 1100...but I have six Battery Tender Plus units and they work just fine...for 6 years now.

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post #9 of 27 (permalink) Old 04-06-2014, 06:37 PM
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1 x genius, 1 x battery tender, 1x battery minder, 1x Schumacher , 1x fixed current auto charger. That is five chargers for 4 vehicles. My stuff is always plugged when not running. your batteries will stay factory fresh for years, literally. The only thing in this case that would damage your batteries in the long run is from the heat cycling of usage. Done this way, we are talking at least 3 years before you start noticing less than new performance from your batteries. If you started out with a high quality battery (Yuasa comes to mind), it may be an additional year or two before it behaves less than new. Batteries are not ever maintenance free, just less maintenance free than others if you get the good ones.

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Last edited by Fragile; 04-06-2014 at 06:41 PM.
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post #10 of 27 (permalink) Old 04-06-2014, 10:54 PM
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Wink

never ever used a battery tender......

then again I don't live in Siberia either


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