re battery chargers

Adrian & Joanne Hall · Post by **Adrian & Joanne Hall** » Tue Jun 18, 2002 6:43 pm

Thanks for the advice in response to my earlier post on this subject. Took
myself off to Repco as Gary recommended, gave them all the details and they
said a Projecta Handyman 12V battery (model number KM400R) is suitable.

However when I got home and looked at the box, it said 4 AMPs RMS on it. Is
this too much power for the battery??

Mark Roberts · Post by **Mark Roberts** » Tue Jun 18, 2002 8:17 pm

However when I got home and looked at the box, it said 4 AMPs RMS on
it. Is this too much power for the battery??

dunno about the RMS business but otherwise - Yes, I think so. Does
it not have a trickle/boost switch?

Gary Morrison · Post by **Gary Morrison** » Tue Jun 18, 2002 9:06 pm

Yup it is. The item I bought from them was like a wall plug pack, you know,
the sort of thing that powers telephones etc, but a large one. It had two
leads with battery clips on them coming from it and was limited to 1 Amp. It
was specifically called a trickle charger. Bought it about 2 years ago.

Gary

Post by **zorruno** » Thu Jun 20, 2002 8:41 pm

I think your one looks more like the Arlec ones correct? Half shoebox sized
with a couple of LEDs on the front to tell status. $40 or thereabouts?

It is probably not the best solution, but should work OK. I doubt it puts
out 4 AMPS anyway. The AGM batteries like to be charged with 500mA-2A, 4
should be fine though, but I wouldn't leave it on longer than overnight.
Sometimes they need more time than that to fully revive though, but use a
lower current.

Jaycar sell a kitset that fits inside Arlec chargers (and poss that one?)
that monitors battery status, and limits current to a few hundred mA when
the battery is charged (trickle charge). Its a kitset though - soldering
etc required...
http://shorterlink.com/?GABJ1V

dicky smith, Jaycar etc sell plugpack chargers as Gary mentioned. Something
like this might be good http://shorterlink.com/?K80F0J but 1-2A probably
better if you can fine one.

The best solution is a nicely regulated test bench power supply with
adjustable current limiting. This would do the job nicely

http://shorterlink.com/?9YD2VC

Gary Morrison · Post by **Gary Morrison** » Thu Jun 20, 2002 9:58 pm

dicky smith, Jaycar etc sell plugpack chargers as Gary mentioned.

Something

like this might be good http://shorterlink.com/?K80F0J but 1-2A probably
better if you can fine one.

This would be OK but slow... and the terminals would need replacing with big
clips...

The best solution is a nicely regulated test bench power supply with
adjustable current limiting. This would do the job nicely
http://shorterlink.com/?9YD2VC

$358!!! You can buy a new battery for less!!

jeff · Post by **jeff** » Thu Jun 20, 2002 10:30 pm

guys,

The tech section of road and track magazine mentions
that up 6A is fine for the AGM battery:
http://roadandtrack.com/technical/artic ... icleid=219

so... who was top-down in this weather ???

--- Gary Morrison <gm@paradise.net.nz> wrote:
[...]

Graeme Naisbitt · Post by **Graeme Naisbitt** » Thu Jun 20, 2002 10:42 pm

not been out but it would have been down, I'm sure :p

Post by **zorruno** » Thu Jun 20, 2002 10:43 pm

The tech section of road and track magazine mentions
that up 6A is fine for the AGM battery:
http://roadandtrack.com/technical/artic ... icleid=219

I disagree with road & track then - if you want your battery to last a long
time. There are lots of other resources on the web about AGMs - people use
them for powering homes, electric vehicles, emergency power supplies in
hospitals etc & correct maintenance counts in these situations.

$358!!! You can buy a new battery for less!!

humour... anyway, mine was only $295

Charles & Morven Lynch · Post by **Charles & Morven Lynch** » Thu Jun 20, 2002 10:52 pm

so... who was top-down in this weather ???

Me. 3 times (On the way to work, at lunchtime and going home!)
Hey I've got a number plate to live up to...
Cheers
Chic
TOPDWN

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