Author Topic: 6 volt battery  (Read 1216 times)

Offline melvyndalby

  • Moving Up
  • **
  • Join Date: Aug 2011
  • Posts: 10
  • Karma: 0
6 volt battery
« on: 07.04. 2012 13:44 »
My Rocket Gold Star replica has been unused over the winter so I charged the battery which reached 6 volts (I checked it with my meter).When I fitted it to the bike it would not start.I checked the battery and it only showed 1 volt whe n the ignition was switch on,and no volts when switched off.The bike has been converted to coil ignition.If I connect my meter across the battery terminals surley it should show 6 volts on the bike or off it?

Mel

Offline iansoady

  • Valued Contributor
  • ****
  • Join Date: Jul 2010
  • Posts: 471
  • Karma: 9
Re: 6 volt battery
« Reply #1 on: 07.04. 2012 13:51 »
Sounds like the battery's knackered. A fully charged 6v battery should show around 6.3 - 6.4 volts (and even more when just taken off the charger).

I use those little sealed units that come off burglar alarms and have had excellent results from them. But then again I have a magneto....
Ian.
1962 Golden Flash (arrived)
1955 Velo Viper/Venom (departed)
2004 Triumph Tiger 955i (staying)

Online bsa-bill

  • Wise & Enlightened
  • *
  • Join Date: Mar 2006
  • Posts: 5380
  • Karma: 61
Re: 6 volt battery
« Reply #2 on: 07.04. 2012 16:51 »
I had the same thing on my Flash, two batteries in succession failed after the first charge then the charger went also ( I had tried the batteries on another charger before the charger went)
so duff batteries and/or duff charger?, one of the batteries was a Lucas fibre mat type that had stayed fully charged for a couple of years before I used it - is old Joe still having a laugh?
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Online KiwiGF

  • Last had an A10 in 1976, in 2011 it was time for my 2nd one. It was the project from HELL (but I learned a lot....)
  • Wise & Enlightened
  • *
  • Join Date: Feb 2011
  • Posts: 1413
  • Karma: 12
Re: 6 volt battery
« Reply #3 on: 08.04. 2012 06:49 »
BSA bill/Melvyn

Yr duff batteries were not calcium type were they? I've heard they need a special charger to bring them back to life properly if they get discharged

As calcium batteries seem to becoming the standard It looks like we all might have to buy new chargers.....
New Zealand

1956 A10 Golden Flash EA7-168x, CA10 913x, left BSA together for Liverpool, 5th Dec 1955.

1949 B31 rigid “400cc hot rod” (favourite bike)

1949 C11 rigid, but why!!! (cos it was cheap)

1937 B21, missing parts so mission impossible?

1952 Armstrong Siddeley Whitley for rainy days (with wife).

GL1800 Goldwing not sure why, maybe cos it always starts

Online bsa-bill

  • Wise & Enlightened
  • *
  • Join Date: Mar 2006
  • Posts: 5380
  • Karma: 61
Re: 6 volt battery
« Reply #4 on: 08.04. 2012 09:56 »
Don't think so KiwiGF, nothing on them to say they were any different other than the Lucas glass mat
All the best - Bill
1961 Flash - stock, reliable, steady, fantastic for shopping
1959 Rocket Gold Flash - blinged and tarted up  would have seizure if taken to  Tesco

Offline melvyndalby

  • Moving Up
  • **
  • Join Date: Aug 2011
  • Posts: 10
  • Karma: 0
Re: 6 volt battery
« Reply #5 on: 08.04. 2012 10:37 »
To all the bikers who replied.Looks like Ineed a new battery.The one on the bike is an 18 amp hr.Should I get one with a lesser charge rate.
Mel

Online Triton Thrasher

  • Scotland
  • Wise & Enlightened
  • *
  • Join Date: Feb 2009
  • Posts: 1475
  • Karma: 20
Re: 6 volt battery
« Reply #6 on: 08.04. 2012 10:54 »
There is no advantage in fitting a battery of less amp hour capacity.

Online BSA_54A10

  • Wise & Enlightened
  • *
  • Join Date: May 2008
  • Posts: 1945
  • Karma: 32
    • BSA National
Re: 6 volt battery
« Reply #7 on: 08.04. 2012 12:58 »
Get a 6V Cyclon pack.
Cyclon sell individual 2V cells in a big variety of capacities.
Paul Groff sells a standard 3 cell pack which will fit into your battery box.
Cyclons are pressure valve regulated, spiral wound lead tin batteries that will go for up to 3 years without self discharging.
Failing that get a Pressure Valve Regulated, Absorbent Glass Matt, sealed 6V battery.
Similar story, totally maintaince free, can be fitted at any angle including upside down, capable of being charged at 10A or higher without damage and capable of massive discharge currents.
Avoid gel cells as a direct short or very high discharge or charge rate will stuff the battery.
Also avoid any battery with open cells they will be designed for modern sewing machines and fall apart the first time you go for a ride.
Bike Beesa
Trevor