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The yellow brick battery
Sesman:
Moto at for me. My YTX 14 gave up the ghost in less than 18months.
McCabe-Thiele (Ted):
Low use kills all wet batteries due to sulphination so it's important to not allow the voltage to drop below 12.1 or so volts.
AGM technology results in a slower voltage drop over time compared to normal lead/acid of Gell types.
My battery brand of choice in Cars & bikes has been Yuassa for over 10 years now.
I have a Motobatt in my 400, the voltage reads 12.80 volts this morning, last charged in early December. I connect my Smart charger every 8-10 weeks to keep the voltage up.
I had an unbranded lead/acid battery last 12 years in a car, a cheap Hankook AGM unit failed at 4 years.
McCabe-Thiele (Ted):
--- Quote from: ST1100 on January 29, 2025, 10:56:46 AM ---
--- Quote from: nairb on January 29, 2025, 10:09:52 AM ---I always thought they were longer lasting than some other/cheaper brands...
--- End quote ---
;D
--- Quote ---They are both about 2 years old.
--- End quote ---
And that's about what you'll get out of current avail batteries... any brand/MFG... two seasons... maximum... if you're lucky...
I always picked the OEM Yuasa (YTX14-BS, AGM) for my mounts... always...
Back in the 90ies you'd get 5~6 years out of them... always...
During the turn of the millennium something happened... what was that again... ah!... the RoHS Directive...
After that everything went down... I started to get max 2 years on them... (the very same is happening on car batteries BTW...)
A more "modern" gel type?... pfffff... so much internal resistance under load, my GF's V-twin (NT700VA) would barely turn over TDC... :-\
Switched to LiFePO4 (NOCO)... wow!... massive punch; the starter never purred so happily... stable voltage -> clean spark -> instant firing...
And if it really goes flat over the winter/long grounding time: the designated charger gets it back to full within 45 minutes (not 'charge over night' like an AGM...)
I know, it ain't the 'purist' way, but I got sick of throwing > € 160,- on new AGM cells...
--- End quote ---
Presumably you are talking Lithium type battery, do these work on an old bike without modification?
Johnny4428:
I’ve had good results from motobatt battery’s. I have one on the Pan which this time of year is on a battery tender. And the other ones I remove and have them on the bench so I can stick a charger on them now and again. The only time I have had one fail when actually it was the battery tender that failed, the result being flat battery with no coming back. These are guaranteed for 5 years if you register when new.
K2-K6:
--- Quote from: Johnwebley on January 29, 2025, 10:33:43 AM ---I use the Yellow brick
But completely opposite to Steve
They seem to thrive on neglect,
Fully charge every 2 months, don't leave them on a trickle charge
Sent from my SM-A546E using Tapatalk
--- End quote ---
Similar experience here with AGM as they do seem a bit curmudgeonly :) at times.
Finding that if one appears to be going towards failure, then as above in giving it a 24hr charge to get it going at normal pace.
I've found if you "soak charge" it like that, then leave it to think about what its done for at least 3 days, then repeat, all without using it for load, then recovery can be had.
Admittedly, patience is required but they do come back.
I'm charging with a "no intelligence" simple plug charger with two leads coming out of it ... an ancient Gunson brand of about 40yrs .... that measures nothing.
Through multiple charges you can see the battery at end of charge period, that the voltage is higher in accepted charge @ approx 14.3 v which it doesn't do initially.
Eventually to give static float between 12.9 ~ 12.6v when left alone.
If the vehicle charge system can't supply likt this over sustained period a 24hr supplementary charge seems to keep hem at reasonable health an prolong lifing.
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