RE: Battery advice - 2

The positive accessory terminal that Wessie mentioned is a great idea.
I had jumped my bike with my Mazda 3, there, when my lame-ass OEM battery failed.
I forgot about that.

I say "fiddly" and neat wiring because, while I get that it's easy enough to attach pigtails and had done it on my '05 Harley, it's a sporting bike, spirited riding, and pigtails can bounce around, perhaps get chafed or rubbed.
At least that's the way I look at it. For me, I said, "ahh, do a neat job or just take the battery out?"
I may be saved though!

Zitat von basskleff im Beitrag #16

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The positive accessory terminal that Wessie mentioned is a great idea.
I had jumped my bike with my Mazda 3, there, when my lame-ass OEM battery failed.
I forgot about that.

I say "fiddly" and neat wiring because, while I get that it's easy enough to attach pigtails and had done it on my '05 Harley, it's a sporting bike, spirited riding, and pigtails can bounce around, perhaps get chafed or rubbed.
At least that's the way I look at it. For me, I said, "ahh, do a neat job or just take the battery out?"
I may be saved though!

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Zitat von basskleff im Beitrag #16

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The positive accessory terminal that Wessie mentioned is a great idea.
I had jumped my bike with my Mazda 3, there, when my lame-ass OEM battery failed.
I forgot about that.

I say "fiddly" and neat wiring because, while I get that it's easy enough to attach pigtails and had done it on my '05 Harley, it's a sporting bike, spirited riding, and pigtails can bounce around, perhaps get chafed or rubbed.
At least that's the way I look at it. For me, I said, "ahh, do a neat job or just take the battery out?"
I may be saved though!

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Zitat von basskleff im Beitrag #7

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….
Otherwise, you'd see threads of "I take the battery out and charge it on a bench" all over the place. You don't for a reason

……

And besides, you'll need to learn to take the battery out to put a pigtail in. That's never a bad thing. The battery will have to come out at some point.

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Zitat von basskleff im Beitrag #16

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I say "fiddly" and neat wiring because, while I get that it's easy enough to attach pigtails and had done it on my '05 Harley, it's a sporting bike, spirited riding, and pigtails can bounce around, perhaps get chafed or rubbed.

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I am now convinced the best way to connect for charging is the "direct/fly lead/fused extension from the battery posts.

I have always used an old optimate from my 2005 R1200ST direct wired and fully satisfied with battery monitoring, no fancy integrated computer via accessory socket.

Then I needed a second charger to maintain my 2008 purchase of an R1200S and bought the bmw motorrad unit ( They weren't available 2005)

This 4 bar lcd version worked on all R1200 versions until the new R1200RS where the later version was advised.

Now I had to buy the newer updated Motorrad canbus/computer/expensive? unit because I was not aware of the extra positive battery post so perhaps a waste?

Now I am back to the one bike. 2017 RS and three chargers and can note the following.

I bought a new Yuasa 240cc battery 4 weeks ago, filled at home, brand new for a friend who had a motorcyle shop 30+ years.

Using the newest charger clipped direct before fitting to bike, it settled down after 12 hours on first charge to .2 or .1 amp - all good until fully charged and is a great improvement on the cheap exide 200cc that had failed after 14 months.

I have observed, no matter what I do, short run, 2 hours non-stop, move bike in the garden to clean, as soon as I reconnect via the plug/canbus I can expect 6+ hours of a display once at 100% and 0.1 or 0.2 amps before any 'shut down and monitor' from the bmw unit. Unit will then monitor as per instructions.
Have even tried without the alarm activated but within 3 days the charger again lights up, runs it's programme with usual many hours at 100% plus 0.1 amp

I suspect there must be a parasitic drain via bikes own canbus computer keeping the socket 'live' for charge feed and moitoring which delays the 100% and return to monitor.

Last week I added a new optimate fly lead, as advised here, fitted on the battery post and the extra positive post and within an hour the optimate returned to standby.

I now have a 'non-canbus restricted' fused outlet which, following the purchase of a tamya battery lead matching the optimate fly lead and a small din socket (ebay £5 total) which I can now use to connect the latest bmw charger.

Guess what ---- 30 mins max from any reset, bike move, alarm on/off check and keyless ignition on/off sequence to test, the display shows 100% 14.4 volts and is currently on standby monitoring for any voltage drop. Connecting direct with no accessory socket must be the best way.

I always thought the first bmw charger 'killed' one battery on my R1200S due to a canbus/computer error disconnet which never happened on the hard wired R1200ST.

I think the 4 hours at 0.1 is because the slow rate input is not getting to fully charged state due to the onboard stuff being active can-bus 'live' rather than 'off' with a hard wired lead.

Now over two weeks since I followed advice from Lee and can confirm the 'times on charge' do seem to have dropped.
Where it was noticeable the bike was recharging every 2/3 days the gap is now more like 3 - 4 days.
Not an exact test but it is needing less of a top-up despite colder weather.
Also time on the blue screen before it shuts down is shorter and not 'drip-charging' for half a day.
It has shown battery voltage but quickly completes to 14.4 volts
I no longer have the "100% and 0.1 charge" for hours via the accessory socket, just the standard "Charging Complete/Battery Maintenance" on screen before shut-down.
The onboard computer being in use must be the cause of extra battery drain and slow to complete to full battery on the din lead.

As a test this morning, when charger on standby/monitor I removed from the mains to restart a charge cycle. (Wait 10 seconds for the standy led to go out or disconnect the fly lead)

Mains connected - screen "no Battery", then 20 seconds battery 14.2 volts, then 14.3/ 14.4 and screen showing 39% of programme.
Less than 30 seconds later screen reverted to "Charging Complete/Battery Maintenance" and will no doubt shut down shorlty, it never does that so rapidly via the din socket