Alternator/Stator Output?

[TrailBoss]

Another question I'm having a hard time getting an answer to - what is the safe charging output on this bike? In other words, how many amps can you draw without drawing down the battery? My GPS (TomTom Rider 550) supposedly draws 1.2A when it's charging it's battery with the power on, and I'd like to potentially wire in my top-box so I can charge a battery pack for when I'm primitive camping. I don't want to over draw.

 

[TrailBoss]

Bumping this since I still haven't tracked down the answer.

I want to know how many watts can be drawn from the system before the battery ends up discharging. Thinking in terms of auxiliary lights, etc.

 

[r80rt]

This web site says 190 watt output, I haven't seen anything else.

2021 Honda Trail 125 (CT125) Review of Specs / Features + More! | Vintage / Retro Motorcycle...

– New 2021 Honda Trail 125 (CT125) Motorcycle Review / Specs | Buyer’s Guide with everything You need to know! – It’s official, the CT125 is coming to the USA but if you follow the blog then you already knew that as we’ve talked about it for over a year now during the lead up […]

www.hondaprokevin.com

 

[TrailBoss]

This web site says 190 watt output, I haven't seen anything else.

2021 Honda Trail 125 (CT125) Review of Specs / Features + More! | Vintage / Retro Motorcycle...

– New 2021 Honda Trail 125 (CT125) Motorcycle Review / Specs | Buyer’s Guide with everything You need to know! – It’s official, the CT125 is coming to the USA but if you follow the blog then you already knew that as we’ve talked about it for over a year now during the lead up […]

www.hondaprokevin.com

Nice find! If accurate, that's plenty of output.

 

[Sworks]

I had read the same thing 190 watts, which is great considering the size. My KLR is only 260 watt stock.

 

[Ronzee]

Another question I'm having a hard time getting an answer to - what is the safe charging output on this bike? In other words, how many amps can you draw without drawing down the battery? My GPS (TomTom Rider 550) supposedly draws 1.2A when it's charging it's battery with the power on, and I'd like to potentially wire in my top-box so I can charge a battery pack for when I'm primitive camping. I don't want to over draw.

You should be fine. The battery will be enough to charge the gps even if the output is less then the 1.2 amps.

 

[TrailBoss]

You should be fine. The battery will be enough to charge the gps even if the output is less then the 1.2 amps.

GPS
20 watts aux lights
Phone
Heated grips

That's my list. I still think it'll be fine.

 

[Xuvaad]

Another question I'm having a hard time getting an answer to - what is the safe charging output on this bike? In other words, how many amps can you draw without drawing down the battery? My GPS (TomTom Rider 550) supposedly draws 1.2A when it's charging it's battery with the power on, and I'd like to potentially wire in my top-box so I can charge a battery pack for when I'm primitive camping. I don't want to over draw.

and a 'top-box' is what?

 

[FL352rider]

and a 'top-box' is what?

This is top box

 

[TrailBoss]

View attachment 346
This is top box

Say the following in your best Paul Hogan voice:

"That ain't a top-box, now THIS is a top-box..."

 

[G19Tony]

That is a serious topbox. Well done!

 

[G19Tony]

Bumping this since I still haven't tracked down the answer.

I want to know how many watts can be drawn from the system before the battery ends up discharging. Thinking in terms of auxiliary lights, etc.

I'll look around in the manual. I have Denali lights on mine, and I have an SAE outlet on my topbox, to do the same thing you're considering. The LED Denali lights are really low draw. I don't think you have to worry about it. If I find an answer, I'll post back up.

 

[TrailBoss]

I'll look around in the manual. I have Denali lights on mine, and I have an SAE outlet on my topbox, to do the same thing you're considering. The LED Denali lights are really low draw. I don't think you have to worry about it. If I find an answer, I'll post back up.

Where do you draw the power from? Did you go directly to the wires in the headlight or did you go relay from the battery? I'm wondering how much can be drawn safely from the headlight.

 

[G19Tony]

Where do you draw the power from? Did you go directly to the wires in the headlight or did you go relay from the battery? I'm wondering how much can be drawn safely from the headlight.

I have my voltmeter and Denali lights on the same Posi Tap, on the headlight wire. It's just a trigger wire, to turn both items on, they operate from the charging system at that point. The same way the headlights do. I believe that's how it works. I have experienced no issues so far.

 

[TrailBoss]

I have my voltmeter and Denali lights on the same Posi Tap, on the headlight wire. It's just a trigger wire, to turn both items on, they operate from the charging system at that point. The same way the headlights do. I believe that's how it works. I have experienced no issues so far.

Ah, right! I had a set of Denali D2s on a prior cycle. They include everything and the harness connects directly to the battery and has a relay operated by the trigger wire. That's the most sensible and safe way to do it - relay to the battery, trigger off a 12 source.

In related news, those PosiTaps are awesome, aren't they? Expensive, but so worth it.

 

[G19Tony]

Ah, right! I had a set of Denali D2s on a prior cycle. They include everything and the harness connects directly to the battery and has a relay operated by the trigger wire. That's the most sensible and safe way to do it - relay to the battery, trigger off a 12 source.

In related news, those PosiTaps are awesome, aren't they? Expensive, but so worth it.

Yes they are. When I can get to the tail light wiring, I'll be using them again to install the Backoff XP flashing stop module.

 

[eneal65]

I have my voltmeter and Denali lights on the same Posi Tap, on the headlight wire. It's just a trigger wire, to turn both items on, they operate from the charging system at that point. The same way the headlights do. I believe that's how it works. I have experienced no issues so far.

What size Posi Taps did you use? Please and thank you.

 

[eneal65]

Yes they are. When I can get to the tail light wiring, I'll be using them again to install the Backoff XP flashing stop module.

Tony, did you use a wiring diagram to find the 12V trigger source in the headlight housing? Or is it obvious? I like the voltmeter aux pwr socket. If I attempt to use my 20 year old Gerbing on a test ride, it should tell me if/when my battery is draining. At least that's the plan. Someone posted that heated grips/jacket drained his battery. I am going to contact Gerbing to see if they can tell me how many watts my jacket draws. My Gerbing has saved my a$$ on many occasions. Would be nice but not a show stopper.

 

[eneal65]

GPS
20 watts aux lights
Phone
Heated grips

That's my list. I still think it'll be fine.

I have a 20 year old Gerbing heated jacket that I was going to use, but I think I may have found a substitute that draws ZERO watts:

Gerbing 7V Men's Battery Heated Shirt

When you need the most warmth, a heated base layer is the answer. Not only are the heating panels close to your skin, wearing another layer, such as a regular shirt, vest, or jacket, over the base layer traps the heat, so you stay warmer longer. The Gerbing 7 Volt Base Layer Shirt is the ideal...

www.gerbing.com

It's a battery powered base layer. Gonna give it a shot. I'm riding Ruby from Bar Harbor, Maine to Eureka, CA in July. Having ridden across the US on my GS, you can freeze your arse off in July at elevation or if you get wet. So, I want to mitigate what I'm am sure to encounter by way of chilly mornings and rain. I will be wearing a new Motoport Marathon Stretch Jacket and Stretch Trousers, both with Gortex liners. Should arrive in the next 30 days. I figure a merino wool t-shirt, with the 7v shirt over, then a Patagonia 3/4 zip nano-puff and my Jacket. Can take off a couple of layers as the day warms or put a few layers on if it gets cold. Yeah. That's the plan. For now.

Oh, and I loves me some heated grips, but I'm hoping the bark busters and some silk/wool liners will suffice. Crimeny--it'll be July but like I said, I have frozen me arse off in July before.

 

[G19Tony]

Tony, did you use a wiring diagram to find the 12V trigger source in the headlight housing? Or is it obvious? I like the voltmeter aux pwr socket. If I attempt to use my 20 year old Gerbing on a test ride, it should tell me if/when my battery is draining. At least that's the plan. Someone posted that heated grips/jacket drained his battery. I am going to contact Gerbing to see if they can tell me how many watts my jacket draws. My Gerbing has saved my a$$ on many occasions. Would be nice but not a show stopper.

That was before I got the manual. Another cat on the FB CT125 page, advised that it was the black/yellow wire. He was correct. As far as the posi-tap goes. It was red. The ones Denali sent me were the same.