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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.

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?

It’s knackered

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

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

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

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

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?

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

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

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).

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

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.

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.

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