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Battery issue - advice needed please

11 Posts | Latest reply on 06/06/2015 08:24:35 by JP | Go to original / last post

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TAB007

In: Rugby
Posts: 530

Hi all - I had a completely flat battery today due to me leaving my heated grips on so went and bought a battery charger specifically for motorbikes up to 1200cc. It's been on a couple of hours, so thought I'd try it out to take it for a spin but it's not charged enough yet. How long should it take to fully charge? Thanks x

Message posted by TAB007 on 30 May 2015 at 16:05

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TAB007 @ 30/05/2015 16:05:47

Eiron

In: Hastings
Posts: 173

Overnight should be enough. But try it after every couple of hours.
'Smart' chargers don't work on completely flat batteries so if the lights don't come on, you need either an old dumb charger to begin the charging process, or jump leads.

Message posted by Eiron on 30 May 2015 at 17:36

Eiron @ 30/05/2015 17:36:35

TAB007

In: Rugby
Posts: 530

Thanks hun x

Message posted by TAB007 on 30 May 2015 at 17:49

TAB007 @ 30/05/2015 17:49:13

Deleted Member

In: NA
Posts: 0

If your smart charger isnt working on the flat battery get another 12volt battery and some jump leads from some where and connect to your flat battery in parralell. Then hook up the dead battery. T

This should give enough power for the charger to open up and start charging.

Then get your heated grips set up via a relay and an igntion live so they only work when the engine is running.

Message posted by Deleted Member on 31 May 2015 at 11:50

Deleted Member @ 31/05/2015 11:50:52

TAB007

In: Rugby
Posts: 530

Thanks Stuie x

Message posted by TAB007 on 31 May 2015 at 22:01

TAB007 @ 31/05/2015 22:01:36

Deleted Member

In: NA
Posts: 0

If you need help you can always call, if I can I will help. Often down your way.

Message posted by Deleted Member on 31 May 2015 at 22:57

Deleted Member @ 31/05/2015 22:57:59

Richard T

In: North Lincs
Posts: 183

Agree with Stuie.
Accessories should NEVER be wired direct to the battery, always via a relay or other circuit controlled off the ignition switch.
Heated grips or clothing can take a high current, so when I fitted heated grips to my previous bike I took the supply off the alternator output so they were only powered once the engine was running, current drain then couldn't interfere with starting.

Message posted by Richard T on 01 June 2015 at 12:42

Richard T @ 01/06/2015 12:42:17

TAB007

In: Rugby
Posts: 530

Thanks Richard, but the grips were on the bike when I bought it, and given the level of my technical understanding the likelihood of me changing anything is very low! Lol

Message posted by TAB007 on 01 June 2015 at 18:46

TAB007 @ 01/06/2015 18:46:26

Deleted Member

In: NA
Posts: 0

Don't worry TAB it's easy to put an ignition switched relay in the circuit.

Biggest problem is the grip manufacturers are all guilty of telling there customers to go direct to the battery.

Message posted by Deleted Member on 01 June 2015 at 22:49

Deleted Member @ 01/06/2015 22:49:46

Richard T

In: North Lincs
Posts: 183

Yep, too much reliance on the rider to use the 'off' switch!

Message posted by Richard T on 04 June 2015 at 12:45

Richard T @ 04/06/2015 12:45:54

In: Birmingham
Posts: 11141

Hope you got it sorted out Tab. On this direct to Battery stuff I went to look at a bike on Thurs after work a 2014 Yam xt1200z nice bike good price but then my son as they do started messing heated grips direct to battery extra lights direct to battery turn bars to full left lock, hits lock stop turn to fully to the right left hand garde hit Hi touring screen needless to say I walked away thinking how much other stuff has been done on the cheap or botched

Message posted by JP on 06 June 2015 at 08:24

JP @ 06/06/2015 08:24:35

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