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Installed my new Poweroad battery from Battery Experts. Size comparison attached...

I'm gonna order option A for my 800GS.

I've charged Lifepo4's before with my Optimate, no problem. Just make sure it doesn't go onto the desulphate stage.

Thanks, I'll check it out over the weekend.

Interesting... And perhaps, because a lithium charges much quicker, it's less of an issue if you do run it down...?

Dankie Geensand! I see now the original battery - and the current Motobatt I have installed - have a CCA of 200A. That means option A would be fine for my 800GS in terms of cold cranking (280A). But the Motobatt (lead acid) has 14Ah capacity: option A above has 48Wh (i.e. 4Ah), while option B...

Yep, exactly @Jughead.

Dankie Geensand! It shows how much it pays off to shop around online. Takealot have option A "on special" for R2199 ("down" from R2499), BatteryPowerZone charges R1584. I wonder if option A (CCA=280) will be enough for my F800GS, or whether I should also go for B (CCA=300)...

What is the general consensus on lithium bike batteries? My F800GS (2009 model) takes a ETX14-BS (14 Ah). Can I replace it with one of these? This is the 48 Wh model, CC amps = 280 A. R2199 on Takealot. Also, a smaller version: 24 Wh, CCA = 140 A. R1244 on Takealot.

Ah, thanks Dylan. I disconnected and reconnected battery too see if a reset helps, but still get the problem intermittently. My battery does seem to take longer to crank the starter, so perhaps due for replacement anyway. But I'll check the throttle thing.

Nog nie tyd gehad nie, gaan die naweek probeer kyk na die battery...

Thanks @Patrol. Which model SW Motech do you have?

Thanks, some good input. I think these are my requirements, please comment with your real-world experience: Big enough to hold wallet, phone, house keys, sweater, and small windscreen deflector. The latter is homemade and can clip off when off-road. I think 5L is enough? Not too big...

Ek sal die battery ding doen, dankie :)

I have an intermittent problem that my speedo doesn't zero out correctly, e.g. on the attached pic you can see it only goes down to 20 km/h when I power the bike off. After restart, it picks up from that as zero, so my speedo moves and reads 20 km/h over the actual value. Sometimes it sorts...

Thanks @Chrisl, I'll have a look. I had a look at Flyingbrick, the Kappa models look interesting, especially the smaller ones (< 10L).

Any recommendations on a tank bag for my F800GS, 2009 model?

Getting there, 80,000km...

Regso, ek stuur PM met kontakbesonderhede.