Duff battery after two years ??

[Tiger-G]

Hi All 

My 11 year old 955 has a duff battery. It was only put on just under two years ago, and the bike has done about 4,500 miles with it on 

Do you think it could be caused by the dreaded rectifier issue ?? I've read a few threads about rectifiers over the years, but never worried about mine, as it's always seemed ok.

Would wiring in a simple volt gauge, and checking the voltage when riding, be sufficient to keep an eye on things ??

[HockleyBoy]

Could just be a dead battery, if the bike has sat for long periods they can just die, if the battery is ok it is possibly the Regrec or stator. First test the battery with a voltmeter and the bike off, then test with the bike running to see whether its a battery issue or charging related. Plenty on the site about what the readings should be but as a start point a charged battery should be around 12.7v with bike off and you want to see somewhere north of 13v with it running.

Once you have sorted the problem, a wired in voltmeter is a useful addition to keep an eye on things.

[Chris Canning]

These bikes have a history of iffy charging electrics but i've Found things have become more complicated in recent years as battery prices have dropped and so has the quality and i've Had a couple die a death and i've Now started changing batteries at the 2 year mark the only one one that is out of sync is the lithium on my XT which is over 4 years old and as good as ever.

[Tiger-G]

Battery prices dropped ?? Not as far as my jaw when I had to fork out £75 for another Yuasa (heavy duty one this time)   

I did the usual checks on the stator, and that seems ok. I've got a cheap voltmeter on order, so will (try to) wire it in with a relay so it comes on with the ignition.

Will probably get a new R/R, but I'm still not quite sure which one I should be going for, and how to wire it in properly and safely. DEcosse on the other forum recommended a SH847, so looking to source one of those in the U.K.

I've had a good read of the Sasquatch mod thread, so will probably go down that route.

[HockleyBoy]

If you do change the RegRec, the simplest way to go is a Shindengen RegRec and the triumph upgrade connector (this makes it plug and play!). Having tried the mod and a number of different RegRec's over the years and  miles, this has been by far the most reliable set up for me.

[Chris Canning]

75 quid for a battery 

After blip with my Reg/Rec Electrex sent me a new RR881 which has gone into my spares box as I had an original reg/rec that I bought off eBay must 10 years that is currently doing 14.7v

[Tiger-G]

I'll be going with the 847, but I'm rubbish with electrics. Soooo not looking forward to wiring it all in. There's the horror stories of connector blocks melting, fuse holders not being big enough, wires melting. If anyone can can do a complete write up, that would be great  :icon_wink:

[Chris Canning]

The RR881 connects into the wiring same as the Sasquatch mod in other words it connects to the alternator and instead of connecting into the loom you have two extra wires to go onto the battery,they even supply the male and female connectors to the alternator,biggest hassle course is pulling the battery and tank out off to fit it.

Think i've Put in another post a while back when the electrical system is working exactly as it should it's amazing how much better the bike runs at the risk of pointing out the obvious 

[HockleyBoy]

If you go the SH847 Route, (by the way, he SH847 is a Shindengen RegRec, the latest version I think), the easiest way to wire it is the Triumph Connector Part No : T2500676 see below

https://www.fowlersparts.co.uk/parts/view/T2500676

This makes the RegRec plug and play so you don't need to mess around with wiring.

[Tiger-G]

Thanks for the info chaps, just need to source a genuine 847 now in the U.K.   There's a couple on Fleebay in Germany, but not sure if they're the real deal ?? I've heard there are a good few fakes out there ??

https://www.ebay.co.uk/itm/Voltage-Regulator-Langsregler-SH847AA-Incl-Adapter-Connector/183354326236?epid=4007161931&hash=item2ab0c4fcdc:g:O7kAAOSwj~dZ38l7

[HockleyBoy]

Hard to tell whats real and whats fake on ebay. Certainly priced as a genuine part. Think I brought my RegRec from this guy in the US a few years back and its still working fine, not sure how many miles but I think I moved it from one bike to another so it could be over 100k!

http://www.roadstercycle.com/

[Tiger-G]

Hi  ,

With a new volt gauge wired in, here are the voltages I'm getting. Please could anyone let me know whether it's worth buying a new rectifier, or are the voltages sufficient to keep old Tigger going ?? I've included cold (C) and hot (H) engine voltages:

Ignition switched on only, engine off: 12.1

Tickover:    C13.2  H12.5
2,000 revs: C12.9  H13.6
3,000 revs: C12.6  H13.3
4,000 revs: C12.6  H13.1
5,000 revs: C12.7  H13.0
6,000 revs: C12.7  H13.0

[Timbox2]

Hi :smile2:,

With a new volt gauge wired in, here are the voltages I'm getting. Please could anyone let me know whether it's worth buying a new rectifier, or are the voltages sufficient to keep old Tigger going ?? I've included cold (C) and hot (H) engine voltages:

Ignition switched on only, engine off: 12.1

Tickover:    C13.2  H12.5
2,000 revs: C12.9  H13.6
3,000 revs: C12.6  H13.3
4,000 revs: C12.6  H13.1
5,000 revs: C12.7  H13.0
6,000 revs: C12.7  H13.0

Where is your volt gauge wired to?  If its direct to battery the readings are low but if youve taken the feed from somewhere else they may be ok. Have you tried just unplugging the reg/rec connectors, cleaning the contacts etc, I got a whole volt back by doing that once.

[Tiger-G]

The volt gauge is wired direct to the battery via a relay that comes on with the ignition. All voltages double checked with my multimeter as being correct. Every connection on the bike was cleaned and had dielectric grease put on them when I had trouble with the bike not starting a couple of years ago.

I suppose I'm just wanting to know at what voltage is the rectifier not providing enough voltage to power the bike and keep the battery charged ?? I've read that the rectifier should be providing about 14 volts to keep things right ??

[Chris Canning]

I've seen worse but your readings are low your a volt short.