RE: Battery/Charger problem HELP - 3

Thanks Wessie for your response. As part of my diagnostics, after 3 hours now, charger still reads 14.4 V, 0.6 A, 94%. Charger is hot now 120F like yesterday and top of battery around neg. post is 105 F.

I will connect the charger directly to the posts recommended.

Do you, based on what I last posted, think the battery is failing prematurely ?? Going back out now to move the charger.

Charger now dropped down to 92% after 1 hour directly on battery. So, the cycle CPU isn't blocking anything. For 19 months always on charge after a ride it read consistently 100%. If it's failing prematurely, IMHO considering the 24 month warranty, it should be replaced for free. When a battery is failing, it fails completely one day out of the blue. I already had it happen with one of my vehicles recently. Also the warranty on it ends in early December this year. A new one is expensive. I will call the dealer service dept. now and advise my findings.

Zitat von Tigervette im Beitrag #29

---

Another BMW dealer website stated "the OEM BMW cycle battery on all new BMW cycles is warranted against defects in material and workmanship for a period of 24 months (unlimited mileage) from the date of purchase....OTC purchase of original BMW batteries are also covered by a 24 mo. warranty." They stated if you bring it in and have it tested that results in a reading "replace battery" you will get a new battery free.
Does this policy still stand ???

---

I checked my 2022 Warranty Manual and the battery is still covered for two years.

Wednesday morning update:
Left it off charger last night when it was still at 92% at 11PM EDT. Charger was hot, 120 F, and top of battery around 110F, connected directly to battery.
This morning reconnected charger at 5:45 AM to battery Pos. red cap post and batt. neg. terminal.
At 6:15, 30 min. later charger was at 100%, 0.2A, 14.4V !!!!

At 10:15, still connected, battery charger reads 100%, 0.1A, 14.4 V. Charger back side down to around 100F, battery around 80 F, ambient garage temp around 82F.

So all is good. previous erratic readings may be heat related. AC not on in garage past few days. Outside was in upper 80s to low 90's yesterday.

Will not call dealer since all is normal now, IMHO. Still have 5 months left on battery warranty if it acts up again before December.
Thanks again guys for all your posts.

One PS: can I leave the plastic 'tupperware' battery compartment cover off for a while and ride it with battery not covered by the plastic. The battery box already has a removable cover shielding the outside face of the battery. Maybe this will unintentionally let the battery run cooler on a ride ????

I very much doubt bmw would fit a piece of plastic if one could delete it from manufacture.

If they can fit a OE mini battery I am sure they would have considered all cost saving options, weight or financial!

It is probably there more to protect the battery from engine heat than anything else.

I do know my old XJ40 jag had the battery in the engine bay and one thing that could cause trouble was if the plastic protector screening three sides was not replaced after a battery change.

For anyone not familiar with the plastic battery plate, this video shows it.
https://youtu.be/TjQLTDUkJUM
If you don't replace the plastic plate you lose the rubber grommet that holds the side cover in place.

Zitat von Lee im Beitrag #38

---

For anyone not familiar with the plastic battery plate, this video shows it.
https://youtu.be/TjQLTDUkJUM
If you don't replace the plastic plate you lose the rubber grommet that holds the side cover in place.

---

Zitat von Tigervette im Beitrag #36

---

Wednesday morning update:
Left it off charger last night when it was still at 92% at 11PM EDT. Charger was hot, 120 F, and top of battery around 110F, connected directly to battery.
This morning reconnected charger at 5:45 AM to battery Pos. red cap post and batt. neg. terminal.
At 6:15, 30 min. later charger was at 100%, 0.2A, 14.4V !!!!

At 10:15, still connected, battery charger reads 100%, 0.1A, 14.4 V. Charger back side down to around 100F, battery around 80 F, ambient garage temp around 82F.

So all is good. previous erratic readings may be heat related. AC not on in garage past few days. Outside was in upper 80s to low 90's yesterday.

Will not call dealer since all is normal now, IMHO. Still have 5 months left on battery warranty if it acts up again before December.
Thanks again guys for all your posts.

One PS: can I leave the plastic 'tupperware' battery compartment cover off for a while and ride it with battery not covered by the plastic. The battery box already has a removable cover shielding the outside face of the battery. Maybe this will unintentionally let the battery run cooler on a ride ????

---

I was NOT referring to the almost square almost flat plastic plate the contacts the side of the battery facing outward, it's actually one end of the battery box, and is secured with two prongs on each side near the top and the tab sticking out on the bottom edge that slips under the battery edge and fits in a small hole downward.

I WAS referring to the irregularly shaped piece of injection molded plastic that covers the battery box with one metal screw in upper left side and a tab on right upper side and a tab on the bottom. That piece does not secure the battery. The box end plate AND the rubber strap do that job !!!

I'm not THAT foolish. At 72 I've owned previously 5 other motorcycles and a current scooter and worked on all of them.

Which part are you referring to?

Battery Box.jpg - Bild entfernt (keine Rechte)

The cover plate and it’s installation procedure appears the same as on my 2018

Zitat von Lee im Beitrag #42

---

Which part are you referring to?

---

I'm not sure what to make of all this! My 2016 1200RS, which I bought new, has 40,000 miles on the clock, still has the original battery and starts on the button (at the moment). I'm booked on a tour through France, Slovenia, Italy etc. next month - should I be worried?? 😕😬