Tried them all at some point and whatever BMW OE does to those they last 2-3X longer. I literally just replaced a 14 year old battery last September….fuckin insane longevity with the OEM ones.
I had battery problems and got a YUASA and had no issue since so I think they’re a decent brand (highly recommended by people).
I run a Yuasa in my 114 Streetbob. Best battery on the market.
Second the Yuasa recommendation. Best battery I’ve had. Bought last one on Amazon. I like that the acid hasn’t been added yet so you know it’s fresh.
I fully trust Yuasa. They're just excellent quality.
Left one uncharged for a whole winter fired right up.
My 12v battery died last winter and I decided to replace it with a Yuasa Silver battery after hearing people having problems with their 12v battery. It has a 5 year guarantee which gives a bit of peace of mind.
Yuasa are always good, but I've been a big fan of "Big Crank" / [Batterymart.com](http://Batterymart.com) batteries on most of my bikes.
Yuasa is absolutely the way to go
BMW i3… loved that little toaster but 80 mile range wasn’t cutting it anymore. I still enjoyed running errands and zipping through parking lots.
I’m not satisfied with the range (70 miles) or the charging speed (max 19.2 kW via J-1772, taking 4 to 13 hours to charge) of the BMW batteries in my Lion Type C electric school bus.
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