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[Norm]

Ally just going by that I think you could run either the 2 purples and not use the orange/yellow or you could use mode 1. 30 volts A/C is good I have seen 17 volts A/C and still get 13 volts D/C. With yours I would have liked to see a bit better D/C output but obviously that is what the Power Box is maxing out at. Power Boxes are not perfect either they can give varying outputs as well I have one that sits at 14 volts all the time even just using the 2 purples so it is ridden all the time with the lights on to stop it overcharging the battery and who would have ever thought a Super Meteor would have ever had an overcharging problem

[AllyF]

Norm

I was a bit disappointed with the Powerbox output - 30 Vac in 12.44 Vdc out - but as I said all seems to be working OK.

So Job done.

Thanks folks for the advice etc.

Cheers Ally F.

[Thack]

Norm, 14V won't overcharge the battery. Lots of cars regulate to at least that: several Fords that I measured ran at 14.4V. 14V is only 2.33V per cell.



There are numerous sources of information, but just a quick gander on Wikipedia will show you this:



"Typical (daily) charging: 2.37–2.4 V (depending on temperature and manufacturer's recommendation)"

"Gassing threshold: 2.4 V"



Those equate to 14.22V - 14.4V for a 12V battery, with a gassing threshold of 14.4V.



I'm sure you don't need me to point you to a load of on-line sources, but this popular one comes to mind:



http://batteryuniversity.com/learn/arti ... id_battery



Obviously there's no problem with driving with your lights on, but at 14V there's absolutely no need.

[Thack]

AllyF: 12.44V is definitely too low for a float charge system as used in cars and motorcycles.



Although it seems OK at the moment, if you really do only have 12.44V float voltage then the battery will slowly discharge - perhaps over a few weeks.



HOWEVER, I would measure it again after a good long ride to make sure the battery is charged when you measure it. If the battery was somewhat discharged when you first measured it, then the charging current could pull the Powerbox output down, especially if you measured it at tickover.



I strongly recommend you test it again after a good ride so the battery is fully charged (or overnight on a charger, then a shorter ride), and with the engine revving to maybe 1500rpm or so. If you aren't getting 13.8V then, it's time to ring the supplier and discuss it with them. You really should be looking for 13.8V as a minimum.

[Norm]

Thack I agree that 14 volts is ok going into a car battery but I would be concerned with 14 volts going into a motorcycle battery constantly, might be ok but I wouldn't be too happy about it