Topic: AGM Motobatt MB12U Battery

[bender01]

I see some have put these in the 550. Is there any other electrical modification to safely run these?
Is the stock wiring and charging system safe or do I need to upgrade something else?
Looks like it could fit a 750 also.
 Thanks

[70CB750]

I have one in Red, I think it is #14??   Never had any problems with it.  Pricy but really good battery. 

[Flyin900]

These AGM’s are just a modern way of doing the old style flooded battery with distilled water and acid. The absorbed glass mat battery is still an acid battery with the material now absorbed into the mats. They are usually better built with more mats than a conventional batteries older style plates and have a better build to have more strength in the case.

They don’t require any service since the material isn’t liquid anymore it is absorbed in the glass mats.
So no need to top up and no venting or spills from the battery generally. I have used them for 10+ years now and they also last way longer than a conventional style battery. While they are a little more expensive they are much more common now and can be bought relatively cheap in off brand offerings.

The Mottobatt is a premium brand and usually more expensive than the off brand ones.

[BenelliSEI]

I buy these KMG batteries on a local website. Kapscomoto.com. Non hazardous material, they ship via Canada Post. They fit perfectly and are inexpensive (about US$60). I have a few that are +5 years old and still working great. They get no special treatment and zero maint. I store them on a shelf during the winter and usually give them one charge up over the 4-5 months.

[MauiK3]

Great to know, thank you!

[dave500]

i got nearly 8 years from a motobatt,i put it in a bike i sold it was still managing.

[seanbarney41]

Probably not a concern with the Motobatt brand, but be careful with some of the discount online battery sellers claiming 550 model fitment.  Many do not realize how tight that 500/550 battery box is.

[grcamna2]

subscribed

[chiefum]

I run the MB12U in my 550, fits great and no issues yet.

[Deltarider]

All my conventional Yuasa's lived 6-7 years. I see no reason to change. They're a direct fit, cheap and forgiving towards voltage spikes. AGM batteries can also be good, but may require a slightly higher set voltage regulator to enjoy the extra, at cost of HP output ofcourse. I wouldn't recommend gel batteries: they require a voltage output reduced to 14.3 max. Too much hassle.

[PeWe]

AGM battery has different needs. Google on it.
Charging voltage needs to be higher, 14.8V.
When charging in garage, charge until full, 24 hours or so.
Not low charge during a long period of time.

Chargers have AGM mode which is same as snowflake setting, higher voltage when cold for std batteries outdoors.

I have often got thoughts about std "wet" batteries as best choice for our CB's without modifying more charging related.
I have tested GEL (need lower charge voltage), latest was AGM.
I'll see how long time it will survive.
I think the old style will be next. Probably a maintenance free without refill caps.

[Deltarider]

Moreover the conventional Yuasa comes with that wonderful transparant tube which - if you don't really need a new one (mine served over 40 years before I replaced it) - you can use for a lot of things: bleeding brake fluids, checking fuel heights, homebuilt carb synchroniser, etc.

[Stev-o]

I have 2 MotoBatt batteries [in my Kawasaki's] very good battery.

[PeWe]

A battery success story thread would be fine.

Gather good experiences with how to keep the battery alive.
My batteries so far seems to give up at around 4 years.   Low price batteries.

[hawaiikid]

My local battery dealer doesn't carry an AGM battery to fit my cb400f. Any suggestions for an AGM battery that is the same size as my lead acid battery?

[Stev-o]

My local battery dealer doesn't carry an AGM battery to fit my cb400f. Any suggestions for an AGM battery that is the same size as my lead acid battery?

I like Scorpion batteries, confirm this is the right size for your bike...

https://www.batterystuff.com/powersports-batteries/sYT12C.html

[MauiK3]

Hawaii kid
Are you checking Battery Bill's? They may be able to help.

https://maps.apple.com/place?q=Battery%20Bill%27s&ll=21.3428153%2C-157.8958907&auid=9129004256381236340&lsp=9902&address=960%20Āhua%20St%2C%20Honolulu%2C%20HI%20%2096819%2C%20United%20States

[Gurp]

I buy these KMG batteries on a local website. Kapscomoto.com. Non hazardous material, they ship via Canada Post. They fit perfectly and are inexpensive (about US$60). I have a few that are +5 years old and still working great. They get no special treatment and zero maint. I store them on a shelf during the winter and usually give them one charge up over the 4-5 months.

Wow

[hawaiikid]

no for bills