Motobatt not charging

[Voltaire]

I've got a motobatt in my 1983 BMW and its about 3 months old. Had not used it for a month and just got dim lights and starter clicking.
Jump started it and charging voltage was 13.5 with revs about 1500.
Clearly a 20 min run on the motorway was not enough as stopped and would not start.
Put battery on charger, selected AGM and left it till the lights said it was charged.
13.3 volts, and started a few times no issue.
Rode to testing station and same thing happened, dead.
Hmmmmmm
Any wise thoughts?
Its not a 'smart' battery I would have thought, just the acid is suspended in glass matt...what can go wrong?

I bought it from an on line trader on TradeMe so could be interesting to see how customer service goes there.

[BuzzardNZ]

been through a couple of motobatts myself after having left the bike alone for a few weeks to a month.
I tried charging it after I'd flattened it, but it never held the charge.

Long story short, don't leave it unattended for long periods of time and it will last.

[nodrog:Me]

Some of the motor batts just fuck out, take it back, they should just replace it.

[nadroj]

There was a bad bath a while ago.

[nodrog:Me]

There was a bad bath a while ago.

this is a bad bath

[AllanB]

Warranty it.


I've had the same one for 5 years - gets irnored for a few weeks often, never a issue.

[AllanB]

Warranty it.


I've had the same one for 5 years - gets ignored for a few weeks often, never a issue.

[pete376403]

I'm on to my second motobatt, model MBTX14AU, both fail to hold a charge. The first one lasted about a year, the second one was purchased in May 2013. Been on charge for two days, charge rate 1.3 amps and the earth lead is disconnected so no drain path. When the charger was removed the battery voltage was about 13.2. Now a day later its down to 10.5.

The bike does have fairly long periods of non-use, but I've been pretty good about putting the charger on from time to time.

There is a code number stamped into the top of the battery, I'm guessing it is a batch number. Any idea what the faulty batch numbers are/were?

Edit: Motobat sell their own charger http://www.motobattasia.com/Batterie...fat%20boy.html able to "rescue" flattened batteries

[FJRider]

I've got a motobatt in my 1983 BMW and its about 3 months old ...

You bought it CHEAP ... right .. ???

YAUSA ... I've never had problems.

[Voltaire]

You bought it CHEAP ... right .. ???

YAUSA ... I've never had problems.

YAUSA....... is that like Adidoes?

I thought I'd give the new technology a go...batteries you can post.

They said to send it back 'for testing"

I tested it again tonight, shows 13.3 on the meter, then press the starter and 5 volts...

[Mort]

I've bought three MotoBatt batteries for various bikes. They all failed after a year. Never again. Rubbish.

[FJRider]

YAUSA....... is that like Adidoes?

I thought I'd give the new technology a go...batteries you can post.

The Yausa in my FJ1200 sat unused for six months. The battery was fitted 14 months previous.

It fired straight up within two seconds of the engine being turned over.

The (your) problem will be one of two things ...

1: The battery.

2: The Bike.

What's YOUR guess ... ???

[nzspokes]

Got a Motobatt out of my girls track bike, not been touched for I think a year or so. Used it to start my Maxima. Then it did duty in the mower, with charges between. Now is back in the track bike cranking it over while I sort carb issues.

I think they are good.

[pete376403]

YAUSA....... is that like Adidoes?

I thought I'd give the new technology a go...batteries you can post.

They said to send it back 'for testing"

I tested it again tonight, shows 13.3 on the meter, then press the starter and 5 volts...

Digital meter? That will show 12 -13v even if the battery is flat as a wet turd. Needs a battery load tester to show the real state.

[Howie]

Had a Motobatt in mine for 3-4 years without a problem. Bike has sat for up to three months without use and starts straight away. I haven't checked the voltage though.....