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m0n0wall 1.3b1 released - FreeBSD 6.2 RC1 »
« How does the POE work?  
AuthorAll Replies

Equis
Premium
join:2005-03-18
Australia

reply to Equis
Re: Battery Chargers

Interesting points..

Can anyone give an educated guess on how long a 500va UPS would power a 12v 1.5 amp plugpack?

I liked the battery idea because I though it would give prolonged uptime, but not worth it if its going to blow my gear up

Thanks Again
to forum · permalink · · 2006-12-09 00:33:58 · Reply to this

public

join:2002-01-19
Santa Clara, CA
·DSL EXTREME
said by Equis See Profile :

Interesting points..

Can anyone give an educated guess on how long a 500va UPS would power a 12v 1.5 amp plugpack?

I liked the battery idea because I though it would give prolonged uptime, but not worth it if its going to blow my gear up
You can use a UPS as a charger. Take the output from the battery, not from the AC out.
Cheap chargers usually overcharge batteries. Flooded cells can be refilled, but gel cells are quickly destroyed.
Off the shelf UPS usually contains microscopic batteries. External battery is needed for any serious backup use.

Also get a ups with an ethernet card so that you can remotely monitor the status.
to forum · permalink · · 2006-12-09 01:17:19 · Reply to this

lutful
Premium
join:2005-06-16
Ottawa, ON

reply to Equis
said by Equis See Profile :

Can anyone give an educated guess on how long a 500va UPS would power a 12v 1.5 amp plugpack?
The "VA" rating of SoHo UPS only indicate how much power UPS can supply to PC.

The runtime in minutes will be mentioned in small text - only that number will give you an indication of the battery Amp-hour rating.

said by Equis See Profile :

I liked the battery idea because I though it would give prolonged uptime, but not worth it if its going to blow my gear up
I am confused by this statement. You always need more batteries for prolonged uptime. Is there another way?
to forum · permalink · · 2006-12-11 13:01:20 · Reply to this

Equis
Premium
join:2005-03-18
Australia		 Hello

I was meaning not using a UPS (ac-dc-ac-dc)

Just use a charger and SLA (ac - dc)
to forum · permalink · · 2006-12-11 17:18:03 · Reply to this
Forums » Industry Forums » Wireless Service Providersm0n0wall 1.3b1 released - FreeBSD 6.2 RC1 »
« How does the POE work?  

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