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Vistalite nightstick charger help



 
 
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  #21  
Old August 21st 03, 11:07 PM
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Default Vistalite nightstick charger help

I'm being slack and replying to two posts in one here. Please note
attributions if you wish to disagree with anything written!

rex1047 wrote:
The charger you need is Input 240VAC 50HZ OUTPUT 7.2VDC @ 300mA
Hope this helps


That's accurate for NiCd, but NiMH needs a higher current - around
600mA. The 300mA will work on the 2200mAH NiMH pack, but it'll take
around 12 hours to charge.

Al User wrote in message ...

Gemma,
This jaycar plugpack may suit...

http://www1.jaycar.com.au/productView.asp?ID=MP3010
STOCK-CODE: MP3010 RRP: $21.95


Probably not, since that'll deliver very close to a constant voltage
at 7.2v. You really need constant current for NiMH and NiCd, at least
for "dumb" chargers like most plugpack styles. It'd work pretty well
as a charger for SLAs up to around 3Ah though.

If you really want to charge a NiMH or NiCd safely and properly, you
need a fairly expensive charger or the skills to make one yourself.
Texas Instruments have some interesting chips, and Remote Control
shops have interesting chargers. Expect a good charger to cost from
$60 upwards. Dick Smith used to have a charger kit for around $20 that
needed a plugpack to drive it - I can't see it on a quick look, but
the components were pretty basic so it wouldn't be hard to replicate
on veroboard.

Dave - who has a few nice chargers for various batteries.

--
Dave Hughes

"Did you know God had a plan for you?"
"Does it involve a high-powered rifle and a belltower?"
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  #22  
Old August 21st 03, 11:07 PM
Random Data
external usenet poster
 
Posts: n/a
Default Vistalite nightstick charger help

I'm being slack and replying to two posts in one here. Please note
attributions if you wish to disagree with anything written!

rex1047 wrote:
The charger you need is Input 240VAC 50HZ OUTPUT 7.2VDC @ 300mA
Hope this helps


That's accurate for NiCd, but NiMH needs a higher current - around
600mA. The 300mA will work on the 2200mAH NiMH pack, but it'll take
around 12 hours to charge.

Al User wrote in message ...

Gemma,
This jaycar plugpack may suit...

http://www1.jaycar.com.au/productView.asp?ID=MP3010
STOCK-CODE: MP3010 RRP: $21.95


Probably not, since that'll deliver very close to a constant voltage
at 7.2v. You really need constant current for NiMH and NiCd, at least
for "dumb" chargers like most plugpack styles. It'd work pretty well
as a charger for SLAs up to around 3Ah though.

If you really want to charge a NiMH or NiCd safely and properly, you
need a fairly expensive charger or the skills to make one yourself.
Texas Instruments have some interesting chips, and Remote Control
shops have interesting chargers. Expect a good charger to cost from
$60 upwards. Dick Smith used to have a charger kit for around $20 that
needed a plugpack to drive it - I can't see it on a quick look, but
the components were pretty basic so it wouldn't be hard to replicate
on veroboard.

Dave - who has a few nice chargers for various batteries.

--
Dave Hughes

"Did you know God had a plan for you?"
"Does it involve a high-powered rifle and a belltower?"
 




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