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[puregreen59]

So I'm a courier, I have a lot of accessories and I worry about the power draw on the inverter

I've recently bought a 2017 zero SR to replace my yamaha mt09 tracer, as a work bike.

I've actually been waiting some time for it! Over 5 months, it's quite the story to be honest so I'll save you the hassle and cut to the chase, its coming in 2 days! Woo!

So I have a heated jacket (around 82w on full)
Denali 2.0 D4 auxiliary lights (80w on high beam)
Fast charger for my mobile (40w)
Denali sound bomb (240w)
Inovv K2 dash cam (10w)

So total if I happen be using everything and hitting the horn is 452w, that's not even factoring in the bikes draw with headlight indicators and such, I mean the horn is rarely going to be used.

my question here is what happens if I'm in the scenario above and I happen to also need to break hard causing abs to kick in is something going to pop..? 😂 What are my options here.

I've seen there are other inverters but I'm a little confused on what would work and what wouldn't.

My other thought was the new zero sr s/f have 12v batterys, so this got me thinking, prehaps I could install a 12v battery so cover the load and have it connected somehow to the inverter to keep it charged, but how I would do this safety I wouldn't know.

I have a large box I'll be transferring from my bike to the zero so going this route I was thinking put a false floor in the box and I could house the 12v battery there.

Any ideas or tips are much appreciated

Cheers guys!

[puregreen59]

Complely forget heated grips.. 60w.. This is seaming more of a problem I need to find a solution to by the second.. 😅

[staples]

The horn and lights have their own 10A circuit. Adding that horn, you'd be over the limit on it.

As for the other accessories, you are over that 10A circuit as well with your 192W of usage from the heated gear, dash cam, and phone charger, which if all running at 100% = 16A.

Have you measured the draw on everything, or are these just the ratings of these devices?

[mdjak1]

The horn and lights have their own 10A circuit. Adding that horn, you'd be over the limit on it.
 

According to the company website, the horn is 20 amps.  Seems like it needs a relay and would have to be wired directly to a 12V supply through a 20 amps fuse.  On a regular vehicle that source would be the battery.   

OP, if you do install some kind of 12v battery, how are you going to regulate the recharging of that battery?

[TheRan]

If you move everything over to the 12v battery then you could use the 10A from the existing DC-DC converter to power a secondary 12v DC-DC converter to charge that battery, something like this:
https://simply12volt.co.uk/ctek-d250se-dual-dc-dc-battery-to-battery-charger-12v-20amp-2828-p.asp
https://www.12voltplanet.co.uk/votronic-12v12v-30a-battery-to-battery-charger-vcc-1212-30.html

Quite an expensive solution though and packaging may be an issue. If I was in that situation I would put the auxiliary lights on the lighting circuit, get rid of the horn, and then just avoid using all of the other things together. With a 40W charger you're phone shouldn't take long to charge to you can go without the heated gear for that short time and with some hand guards, thicker gloves, and an extra torso layer you can turn down the heat a bit assuming it's adjustable.

[puregreen59]

The horn and lights have their own 10A circuit. Adding that horn, you'd be over the limit on it.

As for the other accessories, you are over that 10A circuit as well with your 192W of usage from the heated gear, dash cam, and phone charger, which if all running at 100% = 16A.

Have you measured the draw on everything, or are these just the ratings of these devices?

I haven't measured,just going on on data from the Internet/ manuals, everything but the dash cam is ment to be power draw as gas as I know, couldn't find indonon dash cam, so just what it says on the power supply.

[puregreen59]

If you move everything over to the 12v battery then you could use the 10A from the existing DC-DC converter to power a secondary 12v DC-DC converter to charge that battery, something like this:
https://simply12volt.co.uk/ctek-d250se-dual-dc-dc-battery-to-battery-charger-12v-20amp-2828-p.asp
https://www.12voltplanet.co.uk/votronic-12v12v-30a-battery-to-battery-charger-vcc-1212-30.html

Quite an expensive solution though and packaging may be an issue. If I was in that situation I would put the auxiliary lights on the lighting circuit, get rid of the horn, and then just avoid using all of the other things together. With a 40W charger you're phone shouldn't take long to charge to you can go without the heated gear for that short time and with some hand guards, thicker gloves, and an extra torso layer you can turn down the heat a bit assuming it's adjustable.

I don't want to to have the worry of having to having to do quick math while I'm riding trying to working out what I need to turn off or unplug so to not blow a fuse or inverter so prehaps either the dc to dc charger option or would it just be more efficient to change the inverter at this point?

I noticed both of the dc to dc chargers also draw quite a load, do you have any personal experience with either of these? Can the input be limited, Otherwise am I not gunna have a similar problem?

[puregreen59]

So first of I keep calling a bloody inverter, my bad! I mean dc - dc converter

So I found this,



Interestingly there is a 900w version however I'm not sure what connector the dc to dc converter uses, can anyone confirm? As the 450 is a almost direct swap after changing over some pins, the 900w one however has a different connector, or at least a similar connector but 2 extra pins in total, any ideas guys? Im not 100% sure as as all the pictures are low resolution and or labels are clearly not right, but prehaps there's 2 voltage output circuits?

[ESokoloff]

               Load Sharing

What I did on my 2016 DSR was to install two additional horns and control them with a SPDT relay (Single Pole, Double Throw). This relay is energized by the stock horn and its power source is from the Accessory circuit. 
The two horns are on the NO (Normally Open) contacts & the heated gear (grips & vest) are on the NC (Normally Closed) contacts. 
When I toot the horn, the heated gear briefly shuts off so as not to overload the circuit. 

[JimC]

               Load Sharing
 
When I toot the horn, the heated gear briefly shuts off so as not to overload the circuit.

Brilliant!