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Message started by rl153 on 02/04/10 at 10:54:37

Title: Battery
Post by rl153 on 02/04/10 at 10:54:37

I had my battery on a float charger for a couple months. It read 12.9 volts,right off the charger . After the discussion here ,I removed it from the charger and it read 12.6 volts the next day .Now a week later off the charger ,it reads 12.1 volts .Is this a normal drop ,or an indication of a defect? Thanks.

Title: Re: Battery
Post by bill67 on 02/04/10 at 11:19:25

Charge your battery at 2 amps then see what happens.

Title: Re: Battery
Post by verslagen1 on 02/04/10 at 11:30:17

Put water in it first.

Title: Re: Battery
Post by jabman on 02/04/10 at 11:32:54

ive always used distilled water to top up does it make any difference?

Title: Re: Battery
Post by verslagen1 on 02/04/10 at 11:52:43

3B30333C303F510 wrote:

ive always used distilled water to top up does it make any difference?

Yes it does. you don't want to contaminate the battery with minerals.

Title: Re: Battery
Post by jabman on 02/04/10 at 12:32:53

cool :)

Title: Re: Battery
Post by rl153 on 02/04/10 at 13:59:49

The water is at the correct level.

Title: Re: Battery
Post by verslagen1 on 02/04/10 at 14:28:24

Then play taps and get a new one.

Title: Re: Battery
Post by rl153 on 02/04/10 at 16:31:03

Oh well, I think I killed it leaving it on the float charger for 2 months . It shouldn't drop that low after 1 week ,right? Should I get another Yuasa ,or big crank ?Thanks.

Title: Re: Battery
Post by rl153 on 02/04/10 at 18:32:19

The big crank battery has 190 cca ,while some of the other battery names have 210cca. how important is that?

Title: Re: Battery
Post by bill67 on 02/05/10 at 03:41:11

In cars I always used the highest cca I could get should be better in bikes too.

Title: Re: Battery
Post by rl153 on 02/05/10 at 07:09:53

Can you charge a new wet cell battery out of the box with a deltran battery tender jr,once you've added the acid? Also when you measure a batteries length ,does that include the vent tube?

Title: Re: Battery
Post by ero4444 on 02/05/10 at 10:19:30

Battery tender won't overcharge in any case, so go ahead.

Battery dimensions won't include the vent tube.

Title: Re: Battery
Post by Routy on 02/07/10 at 05:19:54

A drop to 12.1 volts, equals "borrowed time",..... warrants a new battery.

Leaving a battery on a quality float charger 365 days a year will not only NOT hurt a battery,......its service life will normally be somewhat longer

Water ??
Distilled water is better of course, but remember, in a pinch any water is better than no water !

Title: Re: Battery
Post by SuziQ on 02/07/10 at 06:20:14

434A5946414A1E1D16162F0 wrote:

Is the battery still in the bike? Could be normal drop-off depending on the age of the battery. How old is it? I have a similar conditon with a Yuasa in a Honda Rebel and it still is ok.

Title: Re: Battery
Post by rl153 on 02/07/10 at 19:59:49

I think if it drops to 12.1 volts in a week ,it's like 25% charged . I don't trust that . The battery is less than 2 years old . I'm going to go for the Big Crank,in about the end of march when I can start riding again .