Battery Post Melted - Trying to Start R100T

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jackonz
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Joined: Sat Oct 30, 2021 5:29 pm

Re: Battery Post Melted - Trying to Start R100T

Post by jackonz »

If I were you I would check both your Positive and Negative battery leads on the bike for Voltage drop, this can happen due to corrosion on the copper core and when they have as in your case been overheated, all you need is a digital voltmeter set to DC Volts.

Before you start ensure all conections are clean and tight

1. with the bike turned off and battery still conected measure the voltage on the battery at the posts and note it down.

2. with the positive lead from the meter on the battery take the negative meter lead and put in on the bolt where you negative battey lead is fixed to the gearbox, note the reading, if you get a drop of about 1 or 2 volts in the reading you had in note 1 you need to replace the lead from the battery to the frame.

3. This is a bit harder as you will need to take the cover off the starter and measure from the positive lead that runs from the positive side of the battery to the starter, put the meter positive lead on the starter terminal that runs from the battery, then put the negative lead from the meter on the negative battery terminal. again note it down and if you get a 1 to 2 volt drop that cable will need to be replaced.

You can if you wish measure right across from the starter terminal to the ground at the frame and get a combined reading.

Please note that Voltage drop can also have a negative effect on Battery charging and is somthing often missed.

Good luck and if your unsure then get someone who knows what they are doing to do it for you, all at your own risk.
Phil J

Nelson NZ.
Rob Frankham
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Re: Battery Post Melted - Trying to Start R100T

Post by Rob Frankham »

I think you mean, in point (1), with the engine off but the ignition on. With the ignition off, there will (should) be no current flow and, therefore, no voltage drop.

Rob
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DP55
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Re: Battery Post Melted - Trying to Start R100T

Post by DP55 »

I wonder: if the bolt is not to long; then you can tighten it correct but the cable is not "pressed" enough.
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kmisterk
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Re: Battery Post Melted - Trying to Start R100T

Post by kmisterk »

DP55 wrote: Sun Jan 23, 2022 1:31 pm I wonder: if the bolt is not to long; then you can tighten it correct but the cable is not "pressed" enough.
I imagine something like that could cause issues, but in my case it was just a loose bolt at the terminal.
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spo123
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Re: Battery Post Melted - Trying to Start R100T

Post by spo123 »

I too, have had a completely melted Positive battery connection.
Granted, this was on my 1985 Harley Davidson FXRT. HA!
Anyway, brand new Deka, battery terminals seemed perfectly tight, to me. I have installed and removed many different car and motorcycle batteries over many years......Instant melt!
Damn, WTF!?!
I brought the brand new $$$ battery back to the vendor. He immediately told me the connection was too loose and NO WARRANTY. As the battery is also an AGM, I purchased a suitable charger, for a good price. When I installed that fukker, I made damn sure the connections were TIGHT and never had another problem.
Just MY experience.
Be Well.....Ride Fast and Safe!
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