Narva led light power supply

**Blknight.aus** · 5th April 2008, 10:36 PM

Has anyone out there got one of the NARVA see easy hand held led lights....

the items part number is 71302 and its marked as having a NiMH 3.6v battery pack.

What I need to know is what is the output voltage of the 240v plug pack.

I was given a found one at cooma which didnt have any of the chargers ATM Ive been imitating a brute force charge by plugging it into a 6v charger for an hour (which is about the limit for a 3.6v nimh AA battery set) from what I reckon is nearly flat but I only get about a 25minute run time from it...

I know its got some kind of charging regulator in it but I dont know what its configured for input wise and dont want to blow it out as its been really handy so far.

Cheers.

**abaddonxi** · 5th April 2008, 10:52 PM

3.6v, just plug it into a Nokia or cordless phone charger.

Dunno what will happen, but they all run 3.6v.

Cheers
Simon

**Blknight.aus** · 5th April 2008, 11:09 PM

The nokia chargers have the wrong socket on them, thought of that and depending on model are either 4.5, 5, 6,9 or 12v outputs (I know I have one of each in front of me) ATM Im using a regulated multivolt plug pack on 6v.

**abaddonxi** · 5th April 2008, 11:16 PM

There you go. Just checked the one I'm using at the moment and it 5.7v.

Always thought Nokia chargers were all the same.

Can't sleep for the damage I must have done to my Nokia phones by interchanging the great pile of chargers I've acquired.

Cheers
Simon

**Outlaw** · 5th April 2008, 11:28 PM

I lost my led narva light down at Polo flats... Is it black and have the button just under the lights and ridges along the handle for grip? Oh and a belt clip on the back?

**Outlaw** · 5th April 2008, 11:48 PM

Oh come on... it's not a funny gag if you go offline and don't read it

Well was funny when i wrote it

**Handbrake hates Camping** · 6th April 2008, 12:07 AM

Can't give you the direct answer but the replacement spare part for the charger is only around $20.00

http://www.advancedauto.com.au/pics/71302%20NP.pdf

Doc

**Blknight.aus** · 6th April 2008, 04:34 AM

yeah but when I have no fewer than 15 unused power supplies why buy another one if I have one of the same voltage.

**Stepho_62** · 6th April 2008, 06:08 AM

Originally Posted by Blknight.aus

yeah but when I have no fewer than 15 unused power supplies why buy another one if I have one of the same voltage.

Hey Dave,

Your like me. I thought the rustling in the shed at night was the Ghecko's but it actually the little power supplies breeding.

I now have a decent sized removalist box half full.

Can't help with the supply tho, I have (had) a black 30 LED light ans becasue with minimal usage its now down to a 18 LED light I returned to the magazine publishers for replacement.

I seem to rember it being 5.6v @ 500m Amps

**EchiDna** · 6th April 2008, 09:38 AM

dave can we assume the 3.6 volt battery pack has 3 x 1.2v cells?

anyway, the simple maths is to apply 1.6v per 1.2v cell, so 3 cell battery packs need about 4.8 volts...

so how long do you charge for? well again you can get this from the battery pack - it should say how many mAH the capacity is? the chargers are typically about 66% efficient, thus you must apply roughly 1.5 times the mAH capacity of the battery in "charging effort". so a 1000mA charger will take roughly 4 hours to charge a 2500mAH battery pack.

unfortunately there are limits to how far you can push the cells without them overheating during the charging process, thus you can't (typically) use a 4000mA charger @ 4.8volts for 1 hour to charge the same battery pack...

all theoretical numbers used, but you can use them to get the principle

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