Topic: Battery tester - See status in time

[PeWe]

My new Global AGM battery was happier after its first ride, 317km

CCA value 21 units higher than after full charge with charger.

This 4.4 hours after the ride. Battery still a little warmer.

Yuasa specifies the CCA value at -18*C, not +25C 

[grcamna2]

My new Global AGM battery was happier after its first ride, 317km

CCA value 21 units higher than after full charge with charger.

This 4.4 hours after the ride. Battery still a little warmer.

Yuasa specifies the CCA value at -18*C, not +25C 

Per, do you feel the battery is much more warm than is recommended by Yuasa ?

[PeWe]

Battery will become warm at +25*C  ambient temp plus the warm wind from the engine. It must be same in a car engine bay where the battery often sit.

Global specify 106% at 40*C
There is no max working temperature.
It must reach more than 40*C a hot summer and a hit ride on top of that.

The Yuasa weigh more with its 4.9kg versus my Global of 4.4kg.
It might be more lead in the Yuasa, maybe longer life.

I hope it will take 6-7 years of use to know that

[grcamna2]

Per, what country/location is your Yuasa battery manufactured ?

[PeWe]

Per, what country/location is your Yuasa battery manufactured ?

I do not have a Yuasa, I have a Global battery. As the data page I added earlier

Yuasa data popped up since Kevin have a Yuasa and that brand has always been the top brand of MC batteries since I bought my K6 1979.

My K6 had one when I bought it. Back then when distilled water had to be added now and then.
I remember the magic when the starter suddenly became weak. Fluid level under the lowest line. Added distilled water and instant power!

[grcamna2]

Per, what country/location is your Yuasa battery manufactured ?

I do not have a Yuasa, I have a Global battery. As the data page I added earlier

Yuasa data popped up since Kevin have a Yuasa and that brand has always been the top brand of MC batteries since I bought my K6 1979.

My K6 had one when I bought it. Back then when distilled water had to be added now and then.
I remember the magic when the starter suddenly became weak. Fluid level under the lowest line. Added distilled water and instant power!

I see.

[PeWe]

The sudden battery failure 75km away from home got good consequences as this thread started with, a battery tester.

I have not ridden the brown K2 since then.
It got another battery I thought was good. A 3 years old  AGM battery.
The bike has a battery status LED that suddenly shows low voltage, time to charge it.

I had charged the battery not too long ago.

So I got thoughts about eventual current leak. Measured with ign switch off. No current flow at all.

I replaced the rectifier just for sure.
Went for a new battery. The shop had stock mismatch of the Yuasa battery I planned to buy.
Bought a  yellow Motobatt AGM. It will hopefully last more than 4 years when charged correctly.

A rather thick  rubber mat included, see photo.
This under the battery can be  important for longer life. Vibrations might gave been part of the sudden death. Not only too cheap battery.

I follow both batteries self discharging rate.
Motobatt look still good after 9 days.
The other discharge more.  From 100% to 69% in 9 days.
I wonder how it will look like after a month on the shelf ?

Start August 11
The 3 years old AGM

The new Motobatt also fully charged.





Same batteries  9 days later, today.
The bike is OK, no fatal battery discharging issue with the new yellow Motobatt battery.






Again, the battery tester is really needed.
I will follow all batteries status to ensure to charge in time.

The tired battery that discharge too quick:
July 29 08:00 am:   
Health: 90% 
Charge: 87%

Aug 9 1 pm  60, 62 %

After 2 hours charge:
78, 100%. Typical for bad batteries to be "fully" charged very quickly.

So that battery is too tired for a ride with a safe return back home.
For ign strobe lamp.

EDIT:
I tested my new car battery today Aug 21 after work. Last time I charged it was June 29.
Mostly short drives a few times/week. Car alarm is a constant load.

This made me to connect the charger.



Conclusion:
Check all batteries once a month with the tester. Charge when it has reached 60+%.
Charge once a month will probably not be wrong.
Minimum every 2nd month.

[grcamna2]

Per, I also purchased this excellent Ansel BST100 battery tester.
A Very accurate tester.
I have used it many times with excellent results.

I also learned to Not Buy a Cheap Battery 

[PeWe]

A good tool for not much money
Vibration damping mat under the battery another detail.

[Jerry Rxman Griffin aka MuthaF'er]

Have you guys run into a CHECK CONNECTION with your testers? I have gotten this with a car battery several times. The connection was fine. Afterwards several times I tested my bike battery. No issue. Works fine every time. I'm not sure if this might be covered in a manual either as I can't locate a manual. Kinda curious if it is an internal battery issue with a bad cell "connection". The car is questionable either the battery perhaps or a phantom drain issue.

[grcamna2]

Have you guys run into a CHECK CONNECTION with your testers? I have gotten this with a car battery several times. The connection was fine. Afterwards several times I tested my bike battery. No issue. Works fine every time. I'm not sure if this might be covered in a manual either as I can't locate a manual. Kinda curious if it is an internal battery issue with a bad cell "connection". The car is questionable either the battery perhaps or a phantom drain issue.

Yes, the tester is very sensitive about wanting a 'clean metal to metal' connection direct to the shiny metal of the battery posts.
I cleaned my battery posts til shiny,and it read correctly. 
You may need to remove your battery cables and clean the posts,then check direct to the battery posts.

[PeWe]

Yes, the connection must be good.
I scratch the surface with the tester's "claws".
One side has the cable, it has a dot marking.