Inverter size needed

Submitted: Monday, Jan 14, 2008 at 10:28

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I am looking at running a UMPC in car and was wondering what inverter size I would need to do the job safely. These are the specs for the UMPC

AC Adapter (Input 100~240 V , 50/60Hz)
Lithium lon Battery (11.1V, 2600mAh)
Power Consumption Max. 60W, Normal 15W / Stand-by Mode 2W, Power off less than 2W

Thanks for the help.

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Reply By: Member - Alan H (Narangba QLD - Monday, Jan 14, 2008 at 10:35

Reply By: Mainey (wa) - Monday, Jan 14, 2008 at 10:47

Reply By:- Monday, Jan 14, 2008 at 11:31

Monday, Jan 14, 2008 at 11:31

Thanks for the replies. When you speak of a 300W PSW inverter are you referring to it's peak or continuous rating?

I just had a quick look on ebay and I notice that the efficiency seems to be listed as 80-90% or >85% or >87%;

Any suggestions on suitable sources for a decent quality inverter at a reasonable price. I don't want to waste my money on junk but I am on a budget.

AnswerID: 281539

Follow Up By: Ircon - Monday, Jan 14, 2008 at 11:44

Monday, Jan 14, 2008 at 11:44

Morningstar seem to have a good reputation as a Pure Sine Wave Inverter.
From memory 300W costs about $300. I think they will handle 600W for a short duration. You should check the specs.

Regards,

Rosscoe

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Follow Up By: Member - Steve Y (NSW) - Monday, Jan 14, 2008 at 14:22

Monday, Jan 14, 2008 at 14:22

Mate I got a 300w pure sine wave (600 peak) from Jaycar. Was a while ago and they look good and works well for all the ideas above. lap tops, Battery chargers (Camera etc) It has a low voltage cut out so there is a bit of protection for your battery. I also droned mins when we didn't quite make a river crossing. it was submerged for 20 mins. Pulled it apart, dried and lanotec and all as good as gold. Anyway have a look at their web site

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Follow Up By: Mainey (wa) - Tuesday, Jan 15, 2008 at 00:14

Tuesday, Jan 15, 2008 at 00:14

The 300 watt number refers to 'Continuous' power available, don't be overly concerned with the 'peak' [power surge] number as it's only available for a very short duration (seconds not minutes) and I would only expect an extra 50%, taking the 'peak' [power surge] to maybe 450w, when this is exceeded the Inverter automatically shuts down, just switch it back on and continue working, just more carefully lol.

The efficiency % is far more critical if you want a decent performing Inverter, don't settle for anything less than 88% as a MINIUM % number, 90+% will be more efficient (mine is only 89%) there are various other specs to be aware of, but now we are just getting pedantic.
Mainey...

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