961 Battery

I've got a very early bike (one of the first 5 CR's in the UK...apparently....so I'm told) so I assume it's got the clock issue. Will check at some point. I also have a LR Defender that has the same issue that's taking up my time at the moment!

If its an early bike, also check out the reg/rec. I'll get you a clearer image of the tsb later

Stu Bodycote said:

If its an early bike, also check out the reg/rec. I'll get you a clearer image of the tsb later View attachment 118301

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Thanks for the information Stu . Everyone should check their key off parasitic draw and this is easy enough to do. They (Norton) do not mention acceptable ranges of current draw which is curious .

TonyA said:

Thanks for the information Stu . Everyone should check their key off parasitic draw and this is easy enough to do. They (Norton) do not mention acceptable ranges of current draw which is curious .

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5mA, it's in tsb#00022

I'll post up both bulletins later, they're saved on the workshop laptop, but my Internet is down in here at present due to some building work I've got going on.

After a few years of faithful service from my Shorai Lithium setup (battery and charger (BMS01)) I am having difficulty with the BMS.

The reason for the post (as I know there are other users on the site):

Whilst looking for replacement cables - they can be suspect after a certain number of cycles - I found out the following.

- My usual supplier still sells the BMS, but cables are out of stock.
- Shorai identify the BMS as ‘discontinued’, due to supply chain issues(?)



- Shorai also note that the BMS should not be used in the ‘Store’ mode due to a potential conflict with their own batteries internal BMS. The real reason that the unit has been discontinued I suspect.


Where does that leave users - not sure. Will be speaking to the in-country rep tomorrow and will update the post.

Stu’s info is very interesting indeed….. I have had a few problems with motorcycle batteries over the past few seasons. In Canada, a decent Yuasa agm/lead acid battery is usually priced over $200cdn. And the warranty seems to be 12mths. I have had 2 conventional batteries fail just after the warranty ended and had to decide if I wanted to go down that route again. I have since discovered that Noco offers a Ytz14s style battery for around $200-220cdn price range. With a 5 year warranty. I believe it is probably a pro rated type though. I had one Noco lithium just fail but was 4 years old. Noco replaced the battery free of charge. I’m not sure if that is there normal procedure or I just got lucky on it.
Regarding the charging….. when I spoke to Noco about regulator charge rates, the rep simply stated that the BMS(management system) is the factor. The rep wasnt concerned at all if the regulator put out slightly higher voltage(lead acid rate of approx 14.5v) because the lithium BMS should be able deal with it.
So I have crossed my fingers and have replaced 3 Noco lithiums installed in various bikes when the conventional batteries have failed. Hopefully this is a good decision.
A few notes on the Noco units and I believe the Anti Gravity units and maybe all Lithiums…..
1) is that they go into a “sleep mode” when they get down to approx 12.5-12.7V( I think this is the value). This is to save enough voltage for a start. To wake up the battery, you have to put a slight charge on the battery. In the Noco and Anti Gravity units, a 9volt battery will wake them up supposedly. So I carry a 9v battery with an adapter cord that plugs into my 2 pin charge cord.
2) you have to a have a proper “lithium charge rate” charger or tender
3) the batteries have multiple connection points on the terminals. So you have options if connecting multiple wires to battery as opposed to 1 connection.
Hopefully the above helps….
Sorry for the long winded post!!!!

Thanks for the input Charlotte. The lithium battery options (NOCO/Shorai) work well with the 961. I take it you keep your bike on a lithium charger routinely? Not necessary on your other bikes maybe, but often required on the 961 unless you’ve dealt with the parasitic drain.

I’m having no difficulty with the battery and believe my problem - the BMS will not enter ‘charge’ mode - relates to faulty cables. The BMS has been discontinud but I should still be able to get hold of the cables.

The Shorai BMS has ‘charge’ and ‘store’ modes’. I keep mine routinely in ‘store’ mode which keeps the battery around 13.2v (90% of capacity). Before I ride I hit ‘charge’ which raises it to 14.2v. My bike starts ok @13.2v so not the biggest deal. I’m still trying to resolve the issue though.

I will go down the NOCO route next, unless Shorai pull their finger out and introduce a new BMS/charger. Effectively they now seem to have no charger on the market to support their wide range of batteries, hence the above post - I know we have other users. Good luck with your setup..

I picked up one of the newer Optimate's thst do both PB & LI. Works perfectly so far

Due to the battery location I added a pig tail that connects to a booster pack in case the bike ever needs a jump start. Usually the leads are included or available separately with whatever jump starter you buy.
NOCO for example https://no.co/gbc007

As you folks may have already seen in the past, I relocated my NOCO NLP14 battery in January 2024, and in it's place there is an isolator switch. The battery has not been on a charger since, and has not failed to start the bike when I wanted to use it..

We have been using Anti-Gravity. When the BMS goes to sleep, they have a great little device that wakes it up. Plugs into SAE pigtail see below

Also, most lithium chargers from a reputable brand will maintain a Shorai, just saying. not need to get spendy. The NOCO chargers work best IMO followed by Battery Tender

https://antigravitybatteries.com/pr...tery/cables-parts/restart-remote-powersports/

Do you guys get Optimate's in the US?

kev said:

Do you guys get Optimate's in the US?

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Yes there are optimates here. I am currently using the battery tender lithium charger for my Shorai.