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Motobatt Failure

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wheelysteve
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Motobatt Failure

#1 PostAuthor: wheelysteve » Tue Aug 28, 2018 8:14 pm

Is there any reason why a Motobatt should fail to hold it's charge suddenly.

It's only a couple of years old but drains down to less than 11 v in about a week without charging.
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Garry.L
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Re: Motobatt Failure

#2 PostAuthor: Garry.L » Tue Aug 28, 2018 8:25 pm

wheelysteve wrote:Is there any reason why a Motobatt should fail to hold it's charge suddenly.

It's only a couple of years old but drains down to less than 11 v in about a week without charging.



Are you sure it's the battery not holding the charge or is something draining it?
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Re: Motobatt Failure

#3 PostAuthor: SVENLEATHER » Tue Aug 28, 2018 8:44 pm

It’s knackered

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Re: Motobatt Failure

#4 PostAuthor: chrisu » Wed Aug 29, 2018 6:27 am

I=e had a couple do that. Just ordered my first lithium battery to see how that goes.

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Re: Motobatt Failure

#5 PostAuthor: tlc » Wed Aug 29, 2018 6:59 am

I left mine off the bike for 8 months and it died.
I now own an optimate
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Re: Motobatt Failure

#6 PostAuthor: slappa13 » Wed Aug 29, 2018 10:11 am

The motobatt on my green zed that padders bought has been on it for ten years without being charged

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Re: Motobatt Failure

#7 PostAuthor: ZedHead » Wed Aug 29, 2018 10:56 am

All batteries will eventually discharge themselves, on or off the bike. If allowed to go too far they will fail completely and need to be replaced. I constantly swap a maintenance charger between bikes to keep them sweet :D

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rickm
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Re: Motobatt Failure

#8 PostAuthor: rickm » Wed Aug 29, 2018 3:02 pm

chrisu wrote:I=e had a couple do that. Just ordered my first lithium battery to see how that goes.


I've recently looked into these, so I'd be keen to hear how this goes.
What did you order and from where?
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Re: Motobatt Failure

#9 PostAuthor: ADRIAN H » Wed Aug 29, 2018 3:40 pm

They are not very good, need to be plugged into a Optimate or similar if not used for more than a couple of weeks.
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Re: Motobatt Failure

#10 PostAuthor: rickm » Wed Aug 29, 2018 3:50 pm

I was under the impression that lithium iron batteries (not lithium "ion") didn't lose charge as quickly as lead-acid or gel?
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Re: Motobatt Failure

#11 PostAuthor: PAULJAC47 » Wed Aug 29, 2018 5:16 pm

Unusual for one to fail that way,would fully charge and see if the same when disconnected or put an ammeter in series and see if any current drain,when they fail they just usually totally fail(in my experience).
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wheelysteve
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Re: Motobatt Failure

#12 PostAuthor: wheelysteve » Wed Aug 29, 2018 7:37 pm

Must be shorted internally as the charger won't charge it up....just flashes in error mode.
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Re: Motobatt Failure

#13 PostAuthor: chrisu » Thu Aug 30, 2018 6:06 am

rickm wrote:
chrisu wrote:I=e had a couple do that. Just ordered my first lithium battery to see how that goes.


I've recently looked into these, so I'd be keen to hear how this goes.
What did you order and from where?


Ordered from Tayna. Arrived this morning.

Very light !, easy fitment and bike turns over the best its ever done (for a 1200cc V twin).

so far so good - in any event it has a 3 year warranty.

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wheelysteve
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Re: Motobatt Failure

#14 PostAuthor: wheelysteve » Mon Sep 03, 2018 11:46 am

SVENLEATHER wrote:It’s knackered


Think you were right Chris. Will not take a charge at all. Replaced with another Motobatt (38 quid from M&P !!) and all good since.
1975 Z1B Candy Red
1975 Dogs Z1B
1976 Z900 A4
1977 Z650B1
1978 Z650B2
1978 KZ1000D Z1R
H***a Blackbird

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Re: Motobatt Failure

#15 PostAuthor: ZedHead » Sat Oct 20, 2018 9:59 am

Gents, I have been informed that their is some very old stock about. Which might explain some of the failures.

There is a date code.. I am trying to find out more


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