Lithium Battery and SHO

[sheeterhdip225]

I am using Lithium batteries and have a SHO 225 in the morning when the battery is at 14 plus level I get a motor shut down if I run the tack over 4500 RPM's but later in the day once the battery drops be low the 14 volts mark there is no problem. So is there a high voltage shutdown for the SHO?

[Will W/ Lithium Pros]

Is this a LithiumPros Battery?

[Rich Z]

Interesting...on a wet cell I see 14.2v all day long when motor is running and it never shuts down on me. Some one told me once that yamaha charging system is not strong enough amperage wise for lithium batteries.

[sheeterhdip225]

Is this a LithiumPros Battery?

No it is a 12v 100AH Relion Lithium Battery.

[sheeterhdip225]

Interesting...on a wet cell I see 14.2v all day long when motor is running and it never shuts down on me. Some one told me once that yamaha charging system is not strong enough amperage wise for lithium batteries.

It only happens first thing in the morning after the voltage drops it is fine.

[jethro1]

There is no over voltage shut down on the motor.

Some Yamaha tachometers will flash to indicate an over voltage but that is about it. Best I recall the over voltage point on the tachometer is about 16 volts.

Many Yams (mostly the smaller HP ones) have voltage regulators with an output in the 15+ volt range. But there is not enough current to do any harm.

[Hickory Legend]

Might be that the battery is shutting itself down for an over charge. If you leave it on charge all night, then crank it and it starts charging again it may be overcharging. If you have a meter on the battery unless it goes below 13 I wouldnt charge it. If you do, unplug it at soon as it charged. It usaually want take long to charge the Lithium batters.

You dont want to leave them on a charger like you do regular batteries.

[Hunter689 / Get Outdoors]

Might be that the battery is shutting itself down for an over charge. If you leave it on charge all night, then crank it and it starts charging again it may be overcharging. If you have a meter on the battery unless it goes below 13 I wouldnt charge it. If you do, unplug it at soon as it charged. It usaually want take long to charge the Lithium batters.

You dont want to leave them on a charger like you do regular batteries.

Kind of what I was thinking also. The BMS within the battery is shutting it down, thinking that the battery is being overcharged as Hickory suggested.

[sheeterhdip225]

Well I found out why you need the jumper. I have the cable for the YDS Diagnostic so I ran it from the motor to the boat insode. This way I could run it at any time but it did not have the jumper connected.
Well all is well until you get above 4500-5000 RPM then the motor just stops running. Jumper is in now and she runs normal. Just some info.

[rfdong]

What jumper is that? I'm looking at the same battery. Relion said that they have heard of some problems with the battery/motor "resetting". Here is the quote from Mr Bergstrom..." The battery and charging system operate correctly but sometimes the system shuts down for a milisecond and resets the system. "

Anyone else running a Relion cranking battery and SHO with problems? Is the Jumper a sure fix? Sorry if I'm hijacking, but I was just gonna ask my question and I saw this thread...

[sheeterhdip225]

No the jumper is part of the normal setup. What I did was I removed it not knowing it would cause the motor to shut down. I was trying to make it easier to read my motor from counsel instead of having to remove the motor cover every time I ran the YDS Diag. I have had no problems with the Relion batteries at all.

[jethro1]

The YDIS diagnostic port on the motor is supposed to have a cap on it when not being used. The cap has a wire to jumper two of the three pins in the connector.

I think that is the jumper which is being discussed.

[J Risco]

On Yamaha MOTORCYCLES, I have extended the diag wires so that I could put the port at a more accessible place then just plugged the jumper in up there. Made plugging in to race bikes much easier when I didnt have to remove a seat and/or bodywork.