built in battery charger wattage

[glen_374237991]

hi to all,

without having a look does anybody know how many watts a built in battery charger uses , if it makes a difference its an elldiss thanks glen

 

[David_374242465]

Hi Glen. The "output rating", usually given in AMPS not WATTS, varies from manufacturer. Most 'vans are fitted with chargers rated in the range 6 to 10 Amps (80 to 140 Watts approx)This meams that to fully charge a battery from "flat", your typical 85A/Hr battery, will take around 10 to 15 hours, assuming the battery is in good condition.

Hope this helps.

 

[David_374242465]

One other thought. Be aware that 'van chargers will normally only charge your battery to around 80% capacity, as their voltage is normally limited to around 13.8 volts. To fully charge a battery, the start charge voltage neads to be around 14.5 volts. This higher voltage is what you would normally get from a standard car type charger, or better still a "smart charger", where the higher voltage automatically drops as the charging progresses.

Cheers.

 

[xtrailman]

My bailey comes with a 20 amp charger, not sure if any are larger than this.

 

[David_374242465]

Ray is correct. A number of the latest 'vans do have fairly high Amps rating charger outputs. The only thing to note though, is that when on electric hook-up, the higher the rate, the less time it takes to charge the battery. Most however will still only charge to around 80%, due to voltage limit as mentioned previously.

 

[Dave_374330759]

to work out watts multiply Amps X Volts, therefore a 20 amp charger at 13.8 volts = 276 watts

 

[gary]

I think the question was regarding the input wattage not output? given the above then, 276w/230v = a little over 1amp